CA1099496A - Slider for heavy duty flexible fastener tracks - Google Patents
Slider for heavy duty flexible fastener tracksInfo
- Publication number
- CA1099496A CA1099496A CA306,821A CA306821A CA1099496A CA 1099496 A CA1099496 A CA 1099496A CA 306821 A CA306821 A CA 306821A CA 1099496 A CA1099496 A CA 1099496A
- Authority
- CA
- Canada
- Prior art keywords
- strips
- rib
- slider
- groove
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/26—Sliders
- A44B19/267—Sliders for slide fasteners with edges of stringers having uniform section throughout the length thereof
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
- A44B19/16—Interlocking member having uniform section throughout the length of the stringer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/25—Zipper or required component thereof
- Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/25—Zipper or required component thereof
- Y10T24/2561—Slider having specific configuration, construction, adaptation, or material
- Y10T24/2582—Slider having specific configuration, construction, adaptation, or material having specific contour or arrangement of converging channel, separator island, or wing
Abstract
ABSTRACT
A flexible reopenable slide closure structure having first and second flexible plastic continuous fastener strips each having at least three continuous coactingly shaped interlocking releasable rib and groove elements extending along the strip with a closure slider positioned on the strips and guided to move therealong in a closing direction with the slider having opposing faces for pressing the strips together, one of the faces having a raised ridge extending laterally across the strip and extending at an angle to the direction of the strips so that the strips are pressed together in such a way that the ribs and grooves at one side are interlocked first with the ribs and grooves at the center second and the ribs and grooves at the other side last so that the ribs and grooves do not laterally fight each other while moving to closing relationship.
A flexible reopenable slide closure structure having first and second flexible plastic continuous fastener strips each having at least three continuous coactingly shaped interlocking releasable rib and groove elements extending along the strip with a closure slider positioned on the strips and guided to move therealong in a closing direction with the slider having opposing faces for pressing the strips together, one of the faces having a raised ridge extending laterally across the strip and extending at an angle to the direction of the strips so that the strips are pressed together in such a way that the ribs and grooves at one side are interlocked first with the ribs and grooves at the center second and the ribs and grooves at the other side last so that the ribs and grooves do not laterally fight each other while moving to closing relationship.
Description
~0~9496i SP~CIFICATI01\~
The invention relates to improvements in flexible plastic zippers of the type having continuous interlocking ribs and grooves thereon, and more particularly to an improved slider structure and a method of closing heavy duty fastener 5 strips which have three or more rib and groove elements thereon.
In flexible fastener strips of the rype that are formed of plastic manufactured by continuously being extruded from a die, the rib and groove elements are matingly shaped so as to inter-lock when pressed together in a direction normal to the lock.
10 In applying a closing pressure, the strips are pressed together either between a thumb and forefinger or by a slider which is moved along the strips. The ribs and grooves are forced to interlock in position as the normal pressure is applied, with the rib forcing the groove open as it is pushed into it and deflecting 15 its sides sideways until the groove formed between the ribs opens far enough to admit the opposing rib and then interlocks in the grooves.
On heavy duty strips of the type which have three or more tracks, closure cannot be accomplished without considerable 20 effort because the lateral deflection cannot occur. In other words, as ribs are pressed into the grooves on a heavy duty strip having three ribs and three grooves, the ribs forming the sides of the groove cannot push apart, but instead will fight each other. As the ribs on each side of one of thegrooves spread apart, the one 25 rib in the middle will move over further onto the other groove so that it reduces the size of the groove. In order to success-fully close the fastener, the ribs must spread so that each of
The invention relates to improvements in flexible plastic zippers of the type having continuous interlocking ribs and grooves thereon, and more particularly to an improved slider structure and a method of closing heavy duty fastener 5 strips which have three or more rib and groove elements thereon.
In flexible fastener strips of the rype that are formed of plastic manufactured by continuously being extruded from a die, the rib and groove elements are matingly shaped so as to inter-lock when pressed together in a direction normal to the lock.
10 In applying a closing pressure, the strips are pressed together either between a thumb and forefinger or by a slider which is moved along the strips. The ribs and grooves are forced to interlock in position as the normal pressure is applied, with the rib forcing the groove open as it is pushed into it and deflecting 15 its sides sideways until the groove formed between the ribs opens far enough to admit the opposing rib and then interlocks in the grooves.
On heavy duty strips of the type which have three or more tracks, closure cannot be accomplished without considerable 20 effort because the lateral deflection cannot occur. In other words, as ribs are pressed into the grooves on a heavy duty strip having three ribs and three grooves, the ribs forming the sides of the groove cannot push apart, but instead will fight each other. As the ribs on each side of one of thegrooves spread apart, the one 25 rib in the middle will move over further onto the other groove so that it reduces the size of the groove. In order to success-fully close the fastener, the ribs must spread so that each of
-2- ~
~(~99~6 the grooves is made wider to admit the ribs of the opposing strip.
While this is possible on a tWD track fastener, it is not possible on a three or more track fastener. m us, it has been found to ke consider-ably impractical to attempt to close a heavy duty fastener with three or re tracks, due to the fact that the strips fight each other so that when the sides of the groove tend to spread for one groove, one of the sides closes the other groove, instead of opening it. This problem is further aggravated when the fastener being closed is constrained by the sides of the slider that is closing it. Added to the problem described above is the friction of the extra substantial Æ face of the plastic that is being forced into the interlocking mode. This can be overcome in part by putting a coating of silicone on the zipper track. However, while this permits the slider to move more easily, it d oe s not accommo-date the problem of affording more space for the heads and teeth to bypass each other and to snap into position.
The invention provides a flexible reopenable slide closure `
structure comprising in combination first and second flexible plastic con-tinuous fastener strips each having at least three complementary con-tinuous coactingly shaped interlocking releasable rib and groove elements extending lan~itudinally on the strips, and a closure slider positioned an said strips having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, said first face having a ridge which projects toward said second face for pressing the strips together progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extending from said one side to said other side laterally across the strips and having a first leading portian and a second portion with the second portion located in successive .... .
~99~96 relationship to the first portion having regard to said closing direc-tion so that at least one of said rib and groove elements is pressed into interlocking relationship at a different time than the other rib and groove elements, so that said rib and groove elements do not laterally fight each other in ving to closing relationship.
The invention also provides a slide fastener including a pair of fastener strips and a slider for pressing said strips together into closing relationship, said strips comprising first and second flexible plastic continuous fastener strips each having at least three complemen-tary coactingly shaped interlocking releasable rib and grcove elements extending longitudinally on the strips, said slider positioned on the strips and having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, and one of said faces having a ridge pressing the strips together progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extending from said one side to said other side laterally across the strips and having a first leading portion and a second portion with said portions æ ranged in successive relationship to each other so that at least one of said rib and groove elements is pressed into interlock- ;
ing relationship at a different time than the other rib and groove elements so that said three rib and groove elements do not laterally fight each other in moving into closing relationship.
Other advantages and features, as well as equivalent struc-tures and methods which æ e intended to be covered herein, will become more apparent with the teaching of the principles of the present inven- : :
tion in connection with the disclosure of the preferred embodlmest in the specification, claims and drawings, in which:
~,:i . .
99~96 FIGURE 1 is an end elevational view of a slider straddling flexible plastic fastener striPS constructed and operating in accordance with the present invention, with a section taken through the slider parts:
FIGURE 2 is a sectional view taken substantially along line II-II
of Figure l;
FIGURE 3 is a sectional top view taken substantially along line III-III of Figure 2;
FIGURE 4 is a vertical sectional view taken substantially along line IV-IV of Figure 2;
FIGURE 5 is a vertical sectional view taken substantially along line V-V of Figure 2;
FIGURE 6 is a vertical sectional view taken substantially along line VI-VI of Figure 2;
FI w K~ 7 is an elevational view of the slider taken from a direction opposite that of the vlew of Figure 2, and FIGURE 8 is a perspective view of the slider.
Figure 1 illustrates a pair of flexible plastic fastener strips which usually will be of identical construction. Each of the strips has a series of at least three ccmplementary coactingly shaped interlocking releasable rib and groove elements comprising teeth with grooves between the teeth facing the other strip. The grooves and teeth are longitudinal-ly continuous on the strips, and the strips are interlocked by pressing them toward each other. In fastener strips which are provided with only one or two interlocking teeth and grooves on each of the strips, as the strips are pressed together, the teeth at each side of the groove will spread apart to provide access to the groove for the opposing teeth.
Where there are three or more teeth and grooves involved, this cannot occur as will become more clear.
The upper strip 10 has a thicker marginal portion lOa which contains the ribs and grooves, and a web portion lOb which ' 1099~916 attaches to a sheet or film such as by heat welding, or may be itself a sheet or film where the strip is integral with such sheet. The lower strip 11 has the thicker marginal portion 1 la and web portion llb along the side. Each of the strips may have a slight recession or notch 12 and 13 between the marginal portion and the web to accommodate easier flexing between the marginal portion and web.
The strip 10 has shaped teeth 18, 19 and 20 with grooves 15, 16 and 17. The teeth are positioned at one side of the grooves and the inner groove 15, that is, the groove next to the web lOb is formed between the tooth 18 and a shoulder lOc.
The strip 11 has teeth 24, 25 and 26, and grooves 21, 22, and 23. The inner groove 23 is formed between the tooth 26 and a shoulder 1 lc.
In a strip which has only two grooves, when one strip interlocks with another strip, the teeth or shoulders on the out-side tend to spread apart, and the tooth between the grooves tends to remain stationary. By the outwardly positioned teeth spreading apart, the grooves become wider to admit the teeth. However, when there are three grooves, both center teeth remain stationary and the middle groove does not get any larger and does not admit its opposing tooth. More specifically, when the two strips shown in Figure 1 are pressed together in a usual fashion by merely applying a closing pressure normal to the surfaces of the strips, the outer tooth 20 and the shoulder lOc tend to spread apart and the outer grooves 15 and 17 will widen, but the .nside teeth 18 and 19 have nowhere to shift, and the center groove 16 does not , _ , -- ,~ , , .. . .. , .. ,, . . . . ~
.
1C)99~96 open up to admit its tooth. If either of the teeth 18 or 19 tend to spread apart to widen the center groove ~, they are then moving in a direction to close their respective grooves 15 and 17 outwardly of them. With this result, the teeth tend to fight each 5 other in a three groove strip and the strips cannot readily inter-lock together by normal pressing as is possible with two groove strips. This results in the strips tending to flatten out without the grooves opening, so that the strips resist being pressed together, This difficulty is aggravated when heavier material 10 is used such as is normally necessary with a stronger fastener of the type that requires three or more grooves. The heavier material does not flex as easily, and three groove fasteners have been found to function unsatisfactorily because of this difficulty.
;~ 15 In accordance with the present invention, a unique slider 27 is provided which closes the three groove fastener in a pro-gressive manner so that the teeth are not shifted against each other, and the strips close and interlock with the same coaction as occurs in a one or two groove strip. The slider 27 is 20 slidably mounted on the strips so that they close when the slider is moved in a closing direction, as indicated by the arrowed line C
ln Figures i~ and :~, and the strips will open and separate when the slider is slid in an opening direction.
The slider 27 is usually formed of metal, but may be 25 made of molded plastic or other similar material and is generally S shaped when viewed from the opposing end.
The slider is arranged to have confronting or opposing l~g94~6 first and second faces 33 and 34, respectively, which press the strips toward each other for pressing the strips together to interlock the rib and groove elements. The face 33 is uniquely constructed so as to have a raised ridge 35 extending at an angle to the direction of the strips so that the strips are progressively interlocked with one tooth first pressed into its opposing groove and then the next succeeding tooth, and then the next, thereby permitting the teeth on the opposing strips to spread open their respective grooves one at a time.
At the sides of the slider are means for guiding the slider along the strips, the upper face 33 providing a channel for the upper strip 10 and having inner opposite sides shoulders 29 and 30 which hold the slider in alignment with the strip and permit it to slide therealong. For the lower strip 11, the slider face 34 has a channel providing inwardly facing opposite side shoulders 31 and 32 which slide along the sides of the strip to also hold the slider in alignment.
At the opening end of the slider 27 is a separator finger 28, Figures 2, 7 and 8, which pulls the strips apart to separate them when the slider is moved in an opening direction.
For manually drawing the slider along, it has a projection 37 and an opening therethrough for a tab 36 for gripping and pulling the slider.
The unique closing ridge 35 which projects from the - -face 33 toward the face 34 extends at an angle from one side of the strip to the other side of the strips as shown in Figures 2 through 6. As the top strip against the lower strip which is firmly supported on the surface 34 of the slider. The strips begin to interlock, with the lower tooth 24 first entering the groove 15 of the upper strip, Figure 4. Immediately following the upper tooth 18 enters the groove 21 of the lower strip. Next, the lower tooth 25 will enter the upper groove 16 and then the ~9~49~;
upper tooth 19 will enter the lcwer groove 22, Figure 5. Next, the lower tooth 26 will enter the upper groove 17 and finally, the upper tooth 20 will ente~ the lower groove 23, until the fastener is closed, as shown in Figure 6. During the progressive interlocking action effect-ing pressing of the strips together progressively from one side of the strips and faces to the other side of the strips and faces, the teeth beside each of the grooves can spread apart to open the groove. The teeth progressively mcve to the right, Figures 4 and 5, and the strips are pressed together, and then snap into place. The ridge 35 essen- `
tially performs sort of a twisting action on the fastener permitting progressive closing. While the ridge 35 is preferably continuous, it may be considered as having a series of portions with a first leading portion first pressing the ribs and grooves at one side of the strip together and then successive seoond portions, having regard to the closing direction of movement of the slider, and adapted for pressing laterally successive portions of the strip together. A continuous obliquely angular shape of the ridge is preferred because of the smooth -~
progressive action, but other variations in shapes and projections may be employed in accordance with the practice of the invention.
When the slider is moved in the opposite direction and the strips are pulled apart, the teeth can elongate or stretch out and thereby become narrower so that a problem is not presented by an open-ing action. However, when the strips are normally pressed together by methods heretofore used where a pressure is applied uniformly across the strip, the teeth tend to flatten out and try to find a position where the grcove will widen and admit the opposing teeth. This flattening further complicates and aggravates the problem so that the grooves do not open, and as a result, the strips will not interlock. By the ~. .j 9~
present structure and arrangement, the strips will interlock as smoothly as if strips with a single or two grooves were used, and the arrangement will readily accommodate itself to very stiff thick strips, and also to strips having more than three grooves and teeth. This results from the arrangement whereby at least one of the rib and groove elements is pressed into interlocking relationship at a different time than the other rib and groove elements so that the rib and groove elements do not laterally fight each other in moving to closing relationship.
~(~99~6 the grooves is made wider to admit the ribs of the opposing strip.
While this is possible on a tWD track fastener, it is not possible on a three or more track fastener. m us, it has been found to ke consider-ably impractical to attempt to close a heavy duty fastener with three or re tracks, due to the fact that the strips fight each other so that when the sides of the groove tend to spread for one groove, one of the sides closes the other groove, instead of opening it. This problem is further aggravated when the fastener being closed is constrained by the sides of the slider that is closing it. Added to the problem described above is the friction of the extra substantial Æ face of the plastic that is being forced into the interlocking mode. This can be overcome in part by putting a coating of silicone on the zipper track. However, while this permits the slider to move more easily, it d oe s not accommo-date the problem of affording more space for the heads and teeth to bypass each other and to snap into position.
The invention provides a flexible reopenable slide closure `
structure comprising in combination first and second flexible plastic con-tinuous fastener strips each having at least three complementary con-tinuous coactingly shaped interlocking releasable rib and groove elements extending lan~itudinally on the strips, and a closure slider positioned an said strips having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, said first face having a ridge which projects toward said second face for pressing the strips together progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extending from said one side to said other side laterally across the strips and having a first leading portian and a second portion with the second portion located in successive .... .
~99~96 relationship to the first portion having regard to said closing direc-tion so that at least one of said rib and groove elements is pressed into interlocking relationship at a different time than the other rib and groove elements, so that said rib and groove elements do not laterally fight each other in ving to closing relationship.
The invention also provides a slide fastener including a pair of fastener strips and a slider for pressing said strips together into closing relationship, said strips comprising first and second flexible plastic continuous fastener strips each having at least three complemen-tary coactingly shaped interlocking releasable rib and grcove elements extending longitudinally on the strips, said slider positioned on the strips and having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, and one of said faces having a ridge pressing the strips together progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extending from said one side to said other side laterally across the strips and having a first leading portion and a second portion with said portions æ ranged in successive relationship to each other so that at least one of said rib and groove elements is pressed into interlock- ;
ing relationship at a different time than the other rib and groove elements so that said three rib and groove elements do not laterally fight each other in moving into closing relationship.
Other advantages and features, as well as equivalent struc-tures and methods which æ e intended to be covered herein, will become more apparent with the teaching of the principles of the present inven- : :
tion in connection with the disclosure of the preferred embodlmest in the specification, claims and drawings, in which:
~,:i . .
99~96 FIGURE 1 is an end elevational view of a slider straddling flexible plastic fastener striPS constructed and operating in accordance with the present invention, with a section taken through the slider parts:
FIGURE 2 is a sectional view taken substantially along line II-II
of Figure l;
FIGURE 3 is a sectional top view taken substantially along line III-III of Figure 2;
FIGURE 4 is a vertical sectional view taken substantially along line IV-IV of Figure 2;
FIGURE 5 is a vertical sectional view taken substantially along line V-V of Figure 2;
FIGURE 6 is a vertical sectional view taken substantially along line VI-VI of Figure 2;
FI w K~ 7 is an elevational view of the slider taken from a direction opposite that of the vlew of Figure 2, and FIGURE 8 is a perspective view of the slider.
Figure 1 illustrates a pair of flexible plastic fastener strips which usually will be of identical construction. Each of the strips has a series of at least three ccmplementary coactingly shaped interlocking releasable rib and groove elements comprising teeth with grooves between the teeth facing the other strip. The grooves and teeth are longitudinal-ly continuous on the strips, and the strips are interlocked by pressing them toward each other. In fastener strips which are provided with only one or two interlocking teeth and grooves on each of the strips, as the strips are pressed together, the teeth at each side of the groove will spread apart to provide access to the groove for the opposing teeth.
Where there are three or more teeth and grooves involved, this cannot occur as will become more clear.
The upper strip 10 has a thicker marginal portion lOa which contains the ribs and grooves, and a web portion lOb which ' 1099~916 attaches to a sheet or film such as by heat welding, or may be itself a sheet or film where the strip is integral with such sheet. The lower strip 11 has the thicker marginal portion 1 la and web portion llb along the side. Each of the strips may have a slight recession or notch 12 and 13 between the marginal portion and the web to accommodate easier flexing between the marginal portion and web.
The strip 10 has shaped teeth 18, 19 and 20 with grooves 15, 16 and 17. The teeth are positioned at one side of the grooves and the inner groove 15, that is, the groove next to the web lOb is formed between the tooth 18 and a shoulder lOc.
The strip 11 has teeth 24, 25 and 26, and grooves 21, 22, and 23. The inner groove 23 is formed between the tooth 26 and a shoulder 1 lc.
In a strip which has only two grooves, when one strip interlocks with another strip, the teeth or shoulders on the out-side tend to spread apart, and the tooth between the grooves tends to remain stationary. By the outwardly positioned teeth spreading apart, the grooves become wider to admit the teeth. However, when there are three grooves, both center teeth remain stationary and the middle groove does not get any larger and does not admit its opposing tooth. More specifically, when the two strips shown in Figure 1 are pressed together in a usual fashion by merely applying a closing pressure normal to the surfaces of the strips, the outer tooth 20 and the shoulder lOc tend to spread apart and the outer grooves 15 and 17 will widen, but the .nside teeth 18 and 19 have nowhere to shift, and the center groove 16 does not , _ , -- ,~ , , .. . .. , .. ,, . . . . ~
.
1C)99~96 open up to admit its tooth. If either of the teeth 18 or 19 tend to spread apart to widen the center groove ~, they are then moving in a direction to close their respective grooves 15 and 17 outwardly of them. With this result, the teeth tend to fight each 5 other in a three groove strip and the strips cannot readily inter-lock together by normal pressing as is possible with two groove strips. This results in the strips tending to flatten out without the grooves opening, so that the strips resist being pressed together, This difficulty is aggravated when heavier material 10 is used such as is normally necessary with a stronger fastener of the type that requires three or more grooves. The heavier material does not flex as easily, and three groove fasteners have been found to function unsatisfactorily because of this difficulty.
;~ 15 In accordance with the present invention, a unique slider 27 is provided which closes the three groove fastener in a pro-gressive manner so that the teeth are not shifted against each other, and the strips close and interlock with the same coaction as occurs in a one or two groove strip. The slider 27 is 20 slidably mounted on the strips so that they close when the slider is moved in a closing direction, as indicated by the arrowed line C
ln Figures i~ and :~, and the strips will open and separate when the slider is slid in an opening direction.
The slider 27 is usually formed of metal, but may be 25 made of molded plastic or other similar material and is generally S shaped when viewed from the opposing end.
The slider is arranged to have confronting or opposing l~g94~6 first and second faces 33 and 34, respectively, which press the strips toward each other for pressing the strips together to interlock the rib and groove elements. The face 33 is uniquely constructed so as to have a raised ridge 35 extending at an angle to the direction of the strips so that the strips are progressively interlocked with one tooth first pressed into its opposing groove and then the next succeeding tooth, and then the next, thereby permitting the teeth on the opposing strips to spread open their respective grooves one at a time.
At the sides of the slider are means for guiding the slider along the strips, the upper face 33 providing a channel for the upper strip 10 and having inner opposite sides shoulders 29 and 30 which hold the slider in alignment with the strip and permit it to slide therealong. For the lower strip 11, the slider face 34 has a channel providing inwardly facing opposite side shoulders 31 and 32 which slide along the sides of the strip to also hold the slider in alignment.
At the opening end of the slider 27 is a separator finger 28, Figures 2, 7 and 8, which pulls the strips apart to separate them when the slider is moved in an opening direction.
For manually drawing the slider along, it has a projection 37 and an opening therethrough for a tab 36 for gripping and pulling the slider.
The unique closing ridge 35 which projects from the - -face 33 toward the face 34 extends at an angle from one side of the strip to the other side of the strips as shown in Figures 2 through 6. As the top strip against the lower strip which is firmly supported on the surface 34 of the slider. The strips begin to interlock, with the lower tooth 24 first entering the groove 15 of the upper strip, Figure 4. Immediately following the upper tooth 18 enters the groove 21 of the lower strip. Next, the lower tooth 25 will enter the upper groove 16 and then the ~9~49~;
upper tooth 19 will enter the lcwer groove 22, Figure 5. Next, the lower tooth 26 will enter the upper groove 17 and finally, the upper tooth 20 will ente~ the lower groove 23, until the fastener is closed, as shown in Figure 6. During the progressive interlocking action effect-ing pressing of the strips together progressively from one side of the strips and faces to the other side of the strips and faces, the teeth beside each of the grooves can spread apart to open the groove. The teeth progressively mcve to the right, Figures 4 and 5, and the strips are pressed together, and then snap into place. The ridge 35 essen- `
tially performs sort of a twisting action on the fastener permitting progressive closing. While the ridge 35 is preferably continuous, it may be considered as having a series of portions with a first leading portion first pressing the ribs and grooves at one side of the strip together and then successive seoond portions, having regard to the closing direction of movement of the slider, and adapted for pressing laterally successive portions of the strip together. A continuous obliquely angular shape of the ridge is preferred because of the smooth -~
progressive action, but other variations in shapes and projections may be employed in accordance with the practice of the invention.
When the slider is moved in the opposite direction and the strips are pulled apart, the teeth can elongate or stretch out and thereby become narrower so that a problem is not presented by an open-ing action. However, when the strips are normally pressed together by methods heretofore used where a pressure is applied uniformly across the strip, the teeth tend to flatten out and try to find a position where the grcove will widen and admit the opposing teeth. This flattening further complicates and aggravates the problem so that the grooves do not open, and as a result, the strips will not interlock. By the ~. .j 9~
present structure and arrangement, the strips will interlock as smoothly as if strips with a single or two grooves were used, and the arrangement will readily accommodate itself to very stiff thick strips, and also to strips having more than three grooves and teeth. This results from the arrangement whereby at least one of the rib and groove elements is pressed into interlocking relationship at a different time than the other rib and groove elements so that the rib and groove elements do not laterally fight each other in moving to closing relationship.
Claims (9)
1. A flexible reopenable slide closure structure comprising in combination first and second flexible plastic continuous fastener strips each having at least three complementary continuous coactingly shaped interlocking releasable rib and groove elements extending longitudinally on the strips, and a closure slider positioned on said strips having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, said first face having a ridge which projects toward said second face for pressing the strips together progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extend-ing from said one side to said other side laterally across the strips and having a first leading portion and a second portion with the second portion located in successive relationship to the first portion having regard to said closing direction so that at least one of said rib and groove elements is pressed into interlocking relationship at a different time than the other rib and groove elements, so that said rib and groove elements do not laterally fight each other in moving to closing relationship.
2. A flexible reopenable slide closure structure constructed in accordance with claim 1, wherein said first and second portions extend at an oblique angle to the strips.
3. A flexible reopenable slide closure structure constructed in accordance with claim 1, wherein said first and second portions extend at an oblique angle and are con-tinuous with each other so as to form a single continuous ridge angle with respect to the direction of the strips.
4. A flexible reopenable slide closure structure constructed in accordance with claim 1, 2 or 3, wherein said slider has channels for straddling the strips and holding the slider parallel thereto as it moves along the strips.
5. A flexible reopenable slide closure structure constructed in accordance with claim 1, 2 or 3, wherein each of said strips has three ribs and three grooves with the ribs of one strip interlocking into the grooves of the other.
6. A flexible reopenable slide closure structure constructed in accordance with claim 1, 2, or 3, wherein said strips have marginal web portions for attachment to adjoining plastic sheets and the strips are thicker than the web por-tions so as to provide laterally facing shoulders for guiding the slider therealong.
7. A flexible reopenable slide closure structure in accordance with claim 1 or 2, wherein said ridge is formed in a continuous structure and extends obliquely angularly across the strips so that the rib and groove at one edge are pressed together first, next the central rib and groove are pressed together, and the rib and groove at the other side of the strip are pressed together last as the slider is moved in a closing direction.
8. Slide fastener including a pair of fastener strips and a slider for pressing said strips together into closing relationship, said strips comprising first and second flexible plastic continuous fastener strips each having at least three complementary coactingly shaped interlocking re-leasable rib and groove elements extending longitudinally on the strips, said slider positioned on the strips and having means for guiding the slider along the strips and having first and second faces in opposing relationship for pressing the strips together to interlock said rib and groove elements when the slider is moved in a closing direction along the strips, and one of said faces having a ridge pressing the strips to-gether progressively from one side of the strips and faces to the other side of the strips and faces, said ridge extending from said one side to said other side laterally across the strips and having a first leading portion and a second por-tion with said portions arranged in successive relationship to each other so that at least one of said rib and groove elements is pressed into interlocking relationship at a dif-ferent time than the other rib and groove elements so that said three rib and groove elements do not laterally fight each other in moving into closing relationship.
9. Slide fastener in accordance with claim 8, wherein said ridge is formed in a continuous structure and extends obliquely angularly across the strips so that the rib and groove at one edge are pressed together first, next the central rib and groove are pressed together, and the rib and groove at the other side of the strip are pressed together last as the slider is moved in a closing direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US876,020 | 1978-02-08 | ||
| US05/876,020 US4199845A (en) | 1978-02-08 | 1978-02-08 | Slider for heavy duty flexible fastener tracks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099496A true CA1099496A (en) | 1981-04-21 |
Family
ID=25366809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA306,821A Expired CA1099496A (en) | 1978-02-08 | 1978-07-05 | Slider for heavy duty flexible fastener tracks |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4199845A (en) |
| CA (1) | CA1099496A (en) |
| FR (1) | FR2416664A1 (en) |
| GB (1) | GB2014232B (en) |
| IE (1) | IE47397B1 (en) |
Families Citing this family (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744196A (en) * | 1987-01-02 | 1988-05-17 | Gallo Michael S | Device for interlocking tongue-and-groove type bag |
| DE3700427A1 (en) * | 1987-01-08 | 1988-07-21 | Goedecke Hans Joachim | GAS AND LIQUID-TIGHT SEAL |
| DE68913371T2 (en) * | 1988-06-25 | 1994-10-06 | Robson Peter M | Profiled fastening device. |
| US5272794A (en) * | 1990-11-20 | 1993-12-28 | Yoshida Kogyo K.K. | Flexible closure device |
| US5425327A (en) * | 1992-07-15 | 1995-06-20 | Aldon Industries, Inc. | Boat canopy mounting system |
| US5394576A (en) * | 1993-06-15 | 1995-03-07 | Ssi Medical Services, Inc. | Patient support system fastening device and method |
| US6026761A (en) * | 1997-01-31 | 2000-02-22 | Taylor Made Systems Bradenton, Inc. | Canopy mounting system |
| US5991980A (en) * | 1997-08-26 | 1999-11-30 | Meager; Ben | Fastening device for creating a waterproof seal between fabrics or other materials |
| US6216423B1 (en) * | 1997-11-07 | 2001-04-17 | Huntsman Kcl Corporation | Method and apparatus for placing a product in a flexible recloseable container |
| US5956924A (en) * | 1997-11-07 | 1999-09-28 | Rcl Corporation | Method and apparatus for placing a product in a flexible recloseable container |
| US7254873B2 (en) | 1998-06-04 | 2007-08-14 | Illinois Tool Works, Inc. | Scored tamper evident fastener tape |
| US5953796A (en) * | 1998-06-08 | 1999-09-21 | Illinois Tool Works Inc. | Slide zipper assembly |
| US6220754B1 (en) | 1998-09-09 | 2001-04-24 | The Glad Products Company | Closure device and slider |
| US6360513B1 (en) | 1999-05-11 | 2002-03-26 | Sargento Foods Inc. | Resealable bag for filling with food product(s) and method |
| US20010017947A1 (en) * | 1999-05-11 | 2001-08-30 | Sargento Foods Inc. | Resealable bag for filling with food product (s) and method |
| US7101079B2 (en) | 1999-05-11 | 2006-09-05 | Sargento Foods, Inc. | Resealable bag for filling with food product(s) and method |
| US6611997B1 (en) | 1999-06-10 | 2003-09-02 | The Glad Products Company | Closure device |
| AU4433199A (en) * | 1999-06-10 | 2001-01-02 | Glad Products Company, The | Closure device |
| US6874205B1 (en) | 1999-06-10 | 2005-04-05 | The Glad Products Company | Closure device |
| US6581249B1 (en) | 1999-06-10 | 2003-06-24 | The Glad Products Company | Closure device |
| AU4559299A (en) * | 1999-06-10 | 2001-01-02 | Glad Products Company, The | Closure device |
| US6612002B1 (en) | 1999-06-10 | 2003-09-02 | The Glad Products Company | Closure device |
| US6928702B1 (en) | 1999-06-10 | 2005-08-16 | The Glad Products Company | Closure device |
| US6691375B1 (en) | 1999-06-10 | 2004-02-17 | The Glad Products Company | Closure device and method of assembly |
| AU777389B2 (en) * | 1999-06-10 | 2004-10-14 | Glad Products Company, The | Closure device |
| MXPA01012821A (en) * | 1999-06-10 | 2003-07-21 | Glad Products Co | Closure device and method of assembly. |
| US6883210B1 (en) | 1999-06-10 | 2005-04-26 | The Glad Products Company | Closure device |
| CA2371746C (en) * | 1999-06-10 | 2009-09-29 | The Glad Products Company | Closure device |
| US7213303B1 (en) | 1999-06-10 | 2007-05-08 | The Glad Products Company | Closure device |
| US6895641B1 (en) | 1999-06-10 | 2005-05-24 | The Glad Products Company | Closure device |
| JP2003501328A (en) * | 1999-06-10 | 2003-01-14 | ザ・グラッド・プロダクツ・カンパニー | Closure device |
| US6594868B1 (en) | 1999-06-10 | 2003-07-22 | The Glad Products Company | Closure device |
| US6571430B1 (en) | 1999-06-10 | 2003-06-03 | The Glad Products Company | Closure device |
| JP2003501329A (en) * | 1999-06-10 | 2003-01-14 | ザ・グラッド・プロダクツ・カンパニー | Closure device |
| US7793391B2 (en) * | 2000-03-14 | 2010-09-14 | Com-Pac International, Inc. | Flangeless reclosable fastener |
| JP2001340112A (en) * | 2000-05-31 | 2001-12-11 | Ykk Corp | Meshing slide fastener with engaging and disengaging implement |
| ATE305725T1 (en) * | 2000-10-10 | 2005-10-15 | Wizzoz Pty Ltd | COUPLING DEVICE |
| DK200200004U4 (en) * | 2001-03-30 | 2002-09-27 | Helge Leo Pedersen | Liquid tight close to a cover on a mattress and the like |
| US7451530B2 (en) * | 2001-04-30 | 2008-11-18 | Gore Enterprise Holdings, Inc. | Device for creating a seal between fabrics or other materials |
| EP2106715A3 (en) * | 2001-04-30 | 2010-03-17 | Gore Enterprise Holdings, Inc. | Device for creating a seal between fabrics or other materials |
| US6550111B1 (en) | 2001-08-10 | 2003-04-22 | Joseph A. Garraffa, Jr. | Slide fastener system |
| NZ532407A (en) * | 2001-10-17 | 2005-12-23 | Illinois Tool Works | |
| US6594873B2 (en) * | 2001-11-08 | 2003-07-22 | Claudio Argento | Slide closures for touch fasteners |
| US6954970B2 (en) * | 2002-03-11 | 2005-10-18 | Illinois Tool Works Inc. | Insertion apparatus for attaching sliders onto zipper bags and film |
| US7510328B2 (en) * | 2002-10-02 | 2009-03-31 | Illinois Tool Works Inc. | Reclosable package having slider with pull tab |
| US6964519B2 (en) * | 2003-07-30 | 2005-11-15 | Erkenbrack Kenneth Beresford | Atmospheric and/or differential pressure closure for an evacuable storage container |
| CN102247039A (en) * | 2004-10-25 | 2011-11-23 | W.L.戈尔合伙股份有限公司 | Device for forming a seal and product including the same |
| FR2886208B1 (en) * | 2005-05-25 | 2011-03-04 | S2F Flexico | GUIDE FOR THE MUTUAL HITCHING OF HITCH ELEMENTS PROVIDED ON TWO FILMS. |
| US7437805B2 (en) * | 2006-06-23 | 2008-10-21 | Edward Alan Berich | Reclosable storage bag closure with internal valving |
| WO2008003002A2 (en) * | 2006-06-28 | 2008-01-03 | W.L. Gore & Associates, Inc. | Device for creating a seal between fabrics or other materials |
| US20080061535A1 (en) * | 2006-09-08 | 2008-03-13 | Everard Stephen M | Airbag sleeve |
| CA2670108C (en) * | 2006-11-19 | 2013-04-16 | W.L. Gore & Associates, Inc. | Devices and methods for forming a closure between fabrics and/or other materials |
| US20080271298A1 (en) * | 2007-01-11 | 2008-11-06 | Benjamin Meager | Device for creating a seal between fabrics and/or other materials and methods of making and using the same |
| CA2700166A1 (en) * | 2007-09-25 | 2009-04-02 | Gore Enterprise Holdings, Inc. | Self-lubricating fasteners |
| KR100943304B1 (en) | 2007-12-06 | 2010-02-23 | 이상철 | Watertight zipper |
| US20100147425A1 (en) * | 2008-12-17 | 2010-06-17 | Illinois Tool Works Inc. | Water-resistant asset protection bag |
| WO2012144003A1 (en) * | 2011-04-18 | 2012-10-26 | Ykk株式会社 | Vertically engaging slider for slide fasteners |
| US9371153B1 (en) | 2015-03-04 | 2016-06-21 | Modern Twist, Inc. | Shaped elastomeric container with integrated leak resistant seal |
| US10407217B1 (en) | 2018-11-16 | 2019-09-10 | Stasher, Inc. | Method of manufacturing a container with a leak resistant seal |
| US10625906B1 (en) | 2018-11-16 | 2020-04-21 | Stasher, Inc. | Inside out method of manufacturing a container with a leak resistant seal |
| USD903483S1 (en) | 2018-11-16 | 2020-12-01 | Stasher, Inc. | Sealable container |
| US11873143B2 (en) | 2020-02-06 | 2024-01-16 | Stasher, Inc. | Shaped elastomeric container with integrated leak resistant seal and pressure shield |
| US11124330B2 (en) | 2020-02-06 | 2021-09-21 | Stasher, Inc. | Shaped elastomeric container with integrated leak resistant seal and pressure shield |
| IT202100002633A1 (en) * | 2021-02-05 | 2022-08-05 | Ica Spa | CLOSURE SYSTEM FOR PACKAGES WITH SNAP-IN RESEALABLE ELEMENT |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2160819A (en) * | 1937-12-16 | 1939-06-06 | Ideal Fastener Corp | Slider |
| FR1097218A (en) * | 1952-08-02 | 1955-07-01 | Sliding closure | |
| US2739089A (en) * | 1952-10-07 | 1956-03-20 | Svenska Aktiebolaget Polva | Plastic strips |
| US3085367A (en) * | 1959-11-27 | 1963-04-16 | Reynolds Metals Co | Interlocking extruded wall panelling |
| US3173184A (en) * | 1962-09-21 | 1965-03-16 | Ausnit Steven | Shaped head top closure |
| CH403370A (en) * | 1963-03-11 | 1965-11-30 | Amplector Ag | Slide lock |
| US3220076A (en) * | 1963-09-20 | 1965-11-30 | Flexigrip Inc | Slide fastener |
| FR1395588A (en) * | 1963-10-29 | 1965-04-16 | Zipper closure | |
| US3423802A (en) * | 1965-01-08 | 1969-01-28 | Valio Nikodemus Hytonen | Lock for closing and opening a zipper |
| US3627600A (en) * | 1969-04-21 | 1971-12-14 | Du Pont | Process of fastening plastic or elastic sheets |
| FR2087694A5 (en) * | 1970-05-28 | 1971-12-31 | Elf |
-
1978
- 1978-02-08 US US05/876,020 patent/US4199845A/en not_active Expired - Lifetime
- 1978-07-05 CA CA306,821A patent/CA1099496A/en not_active Expired
- 1978-10-05 IE IE1993/78A patent/IE47397B1/en not_active IP Right Cessation
- 1978-10-09 GB GB7839862A patent/GB2014232B/en not_active Expired
- 1978-10-25 FR FR7830355A patent/FR2416664A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IE47397B1 (en) | 1984-03-07 |
| FR2416664A1 (en) | 1979-09-07 |
| GB2014232A (en) | 1979-08-22 |
| IE781993L (en) | 1979-08-08 |
| US4199845A (en) | 1980-04-29 |
| GB2014232B (en) | 1982-03-24 |
| FR2416664B1 (en) | 1985-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |