US3884485A - Collapsible roller skate - Google Patents

Collapsible roller skate Download PDF

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Publication number
US3884485A
US3884485A US389536A US38953673A US3884485A US 3884485 A US3884485 A US 3884485A US 389536 A US389536 A US 389536A US 38953673 A US38953673 A US 38953673A US 3884485 A US3884485 A US 3884485A
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lever
skate
levers
roller
platform
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US389536A
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Josua Walle
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FRESPA AG
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FRESPA AG
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/20—Roller skates; Skate-boards with fixable wheels permitting the skates to be used for walking
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • A43B5/1633—Multipurpose skate boots
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/008—Roller skates; Skate-boards with retractable wheel, i.e. movable relative to the chassis out of contact from surface

Definitions

  • ABSTRACT A thick-platformed roller skate in which the rollers are retractably mounted on levers horizontally pivoted on the platform, the levers having their free ends in generally proximate relation and engaged by common releasable detent to hold the levers at least in position with the rollers in projected operable position, and preferably in both projected and retracted positions.
  • Roller-skates which consist of a platform on rollers fitted with a means of attachment under the sole of an ordinary shoe.
  • roller-skates already exist in which the roller-mechanism and the shoe are all in one piece.
  • roller-skates The drawback to these known roller-skates is that it is necessary to have a roller-mechanism designed to be attached to a shoe and another shoe for walking.
  • Roller-skates are known in which it is possible to lock the rollers in order to walk, but even when the rollers are locked, difficulty is experienced in walking.
  • An object of the present invention is to provide a col lapsible roller-skate which can be used for walking or for skating.
  • a collapsible roller-skate comprising a body adapted for attachment to a shoe, a plurality of rollers rotatably carried on retraction means, housed in the body, the retraction means being operable to move said rollers to one of two distinct positions, the rollers in one distinct position being totally housed in the body and in the other distinct position protruding at least in part from the body.
  • the retraction means includes at least two levers each pivotally housed in said body and rotatably carrying at one end a number of rollers.
  • FIG. 1 shows the underside of the sole of a roller skate of the present invention
  • FIG. 2 is a side-view of the skate of FIG. 1 showing the rollers in the lower position
  • FIG. 3 is a side-view of the skate in FIGS. 1 and 2 showing the rollers in the upper position inside the sole
  • an embodiment of the present invention includes a sole in which a rollermechanism is housed.
  • the sole 10 is preferably made of wood or a suitable plastics material. However it could also be made of leather, hard rubber or a light metal such as aluminium.
  • the sole is joined to the upper part of the shoe in the usual way.
  • the other end of the lever 24 remote from rol ler 15 also provided with inclined surfaces 19, 20.
  • the inclined surfaces 19, 20 of levers l7 and 22 cooperate with a locking device 21.
  • the locking device includes a cylindrical portion which is slidably received in a bore formed in the sole 10 and which extends transversely to the lingitudinal axis of the skate.
  • a helical spring 27 bears against the cylindrical portion 30 to bias the latter towards the centre of the sole.
  • the inclined surfaces 19 or 20 of the respective levers 17, 24 bear against the cylindrical portion 30.
  • an axle 28 formed at the free end of axle 28 is a manual control knob 29 which exceeds the dimensions of the sole laterally.
  • the manual control know 29 enables the cylindrical portion 30 to be axially moved against the bias of spring 27 into a position which it is no longer in contact with the inclined surfaces 19, 20 of the levers.
  • FIG. 3 illustrates a position of the rollers in which the inclined surfaces 19 are in contact with the cylindrical portion 30 thus preventing the levers from pivoting around their fixes axles.
  • the manual control knob and the cylinder 30 are pulled out of the sole, against the force of the spring 27, until the cylinder is no longer in contact with the inclined surfaces 19.
  • the levers are freed and the rollers fall down into the position indicated in FIG. 2 in which they protrude below the sole and ready for skating.
  • the manual control knob 29 is released, the spring 27 pushes the cylindrical portion 30 back into the locking position in which the inclined surfaces 20 are in contact with the cylindrical portion 30.
  • an accidental re traction of the rollers due to the levers pivoting is prevented.
  • rollers After use, the rollers can be retracted and locked inside the sole by means of the same knob.
  • skate of the present invention can be used as a conventional shoe when the rollers are retracted inside the sole or as a roller skate when they are locked outside the sole. Furthermore the skate of the present invention is not much more complicated than skates designed solely for skating; therefore the present skate is highly competitive commercially.
  • the thickness of the sole is of necessity determined so that the rollers can be housed in the recesses of the sole.
  • the thickness of the sole is directly dependent on the diameter chosen for the rollers.
  • a convertable roller skate comprising a thick platform having recesses in its undersurface at least adjacent its opposite ends, roller means adjacent each of said platform ends, and means supporting such rollers for movement from a retracted position fully within said recess to an operative position at least partially protruding from said recess
  • said roller supporting means comprises a rigid lever for each such roller means, said lever carrying at one end thereof said roller means for rotation about the roller axis and being pivoted intermediate its ends to said platform on a fixed horizontal axis intermediate the platform top and bottom, whereby pivotal movement of said lever from a generally horizontal position to an inclined position moves the corresponding roller means from said retracted to said operative position and vice versa, each said lever extending in the direction of said opposite roller means and terminating at its free end in proximate spaced relation to the free end of the other lever, and a common detent means supported by said platform for engaging the mutually adjacent ends of said levers to positively hold said levers in their respective inclined positions and thereby said roller means in
  • said detent means comprises a solid body having surfaces intercepting the pivotal paths of said lever ends.
  • each lever has at its free end an inclined face extending downwardly and away from said end and said detent body is adapted to wedgingly engage the mutually facing inclined faces to hold said levers in their inclined position.
  • each lever end also has an inclined face extending upwardly and away from said end and said detent body is adapted to also wedgingly engage the latter faces to hold the levers in their respective horizontal positions.
  • detent body is generally cylindrical in shape, being arranged in said platform on axis parallel to the lever pivotal axes, and

Abstract

A thick-platformed roller skate in which the rollers are retractably mounted on levers horizontally pivoted on the platform, the levers having their free ends in generally proximate relation and engaged by common releasable detent to hold the levers at least in position with the rollers in projected operable position, and preferably in both projected and retracted positions.

Description

United States Patent [191 W'alle COLLAPSIBLE ROLLER SKATE [75] Inventor: Josua Wa lle, Zuchwil, Switzerland [73] Assignee: Frespa AG, Herzogenbuchsee. Switzerland [22] Filed: Aug. 20, I973 [2|] Appl. N0.: 389,536
[30] Foreign Application Priority Data Aug. 21, 1972 Switzerland l2448/72 [52] U.S. Cl 280/1Ll R [5 l] Int. Cl. A63C 17/20 [58] Field of SearchW. 280/ll.l R lll BR, ll.19, 280/47, 4313,43,)
[56] References Cited UNITED STATES PATENTS 9/[923 Wallace 280/11 m1 3,884,485 May 20, 1975 2.095942 l0/l937 Wetterstrand 280/1 l.l R 3,007,709 l l/l961 Munson 280/43 3.3061523 2/1967 Weitzner 280/l 1.] R FOREIGN PATENTS OR APPLICATIONS 488 743 1928 Germany 280/I H R 464.879 l9l4 France 280lll.l R
Primary Examiner-David Schonberg Assistant Examiner-David M. Mitchell Attorney. Agent. or Firm-William J. Daniel [57] ABSTRACT A thick-platformed roller skate in which the rollers are retractably mounted on levers horizontally pivoted on the platform, the levers having their free ends in generally proximate relation and engaged by common releasable detent to hold the levers at least in position with the rollers in projected operable position, and preferably in both projected and retracted positions.
9 Claims, 3 Drawing Figures PATENTEU MAY ZOIQTS SHEET 2 0F 2 COLLAPSIBLE ROLLER SKATE The present invention relates to a collapsible rollerskate.
Roller-skates are already known which consist of a platform on rollers fitted with a means of attachment under the sole of an ordinary shoe.
Furthermore, roller-skates already exist in which the roller-mechanism and the shoe are all in one piece.
The drawback to these known roller-skates is that it is necessary to have a roller-mechanism designed to be attached to a shoe and another shoe for walking.
Roller-skates are known in which it is possible to lock the rollers in order to walk, but even when the rollers are locked, difficulty is experienced in walking.
An object of the present invention is to provide a col lapsible roller-skate which can be used for walking or for skating.
According to one aspect of the present invention there is provided a collapsible roller-skate comprising a body adapted for attachment to a shoe, a plurality of rollers rotatably carried on retraction means, housed in the body, the retraction means being operable to move said rollers to one of two distinct positions, the rollers in one distinct position being totally housed in the body and in the other distinct position protruding at least in part from the body.
Preferably, the retraction means includes at least two levers each pivotally housed in said body and rotatably carrying at one end a number of rollers.
A preferred embodiment of the present invention is particularly described below, with reference to the accompanying drawings in which:
FIG. 1 shows the underside of the sole of a roller skate of the present invention,
FIG. 2 is a side-view of the skate of FIG. 1 showing the rollers in the lower position,
FIG. 3 is a side-view of the skate in FIGS. 1 and 2 showing the rollers in the upper position inside the sole Referring to the drawings an embodiment of the present invention includes a sole in which a rollermechanism is housed. The sole 10 is preferably made of wood or a suitable plastics material. However it could also be made of leather, hard rubber or a light metal such as aluminium. The sole is joined to the upper part of the shoe in the usual way.
There are two recesses ll, 12 in the sole [0 in which the rollers are housed. in the embodiment illustrated in the drawings, the recess 11 situated in the front of the sole houses two rollers l3, 14 whereas the recess 12 at the back houses only one roller 15. The two front rollers 13, 14 rotate round an axle 16 which passes through the extremity ofa lever 17. The lever 17 pivots about a fixed axle 18 mounted in the sole. The other extremity of the lever 17 which is remote from said rol lers, is provided with two inclined surfaces 19, 20 (which come in contact with a locking device 21 The back roller 15 is rotatably received on an axle 22 which is supported in a bifurcated portion 23 of a lever 24. The lever 24 pivots about an axle 25 mounted in the sole [0. The other end of the lever 24 remote from rol ler 15 also provided with inclined surfaces 19, 20. The inclined surfaces 19, 20 of levers l7 and 22 cooperate with a locking device 21. The locking device includes a cylindrical portion which is slidably received in a bore formed in the sole 10 and which extends transversely to the lingitudinal axis of the skate.
A helical spring 27 bears against the cylindrical portion 30 to bias the latter towards the centre of the sole. In the biased position the inclined surfaces 19 or 20 of the respective levers 17, 24 bear against the cylindrical portion 30. Connected to one end of the cylindrical portion 30 is an axle 28 formed at the free end of axle 28 is a manual control knob 29 which exceeds the dimensions of the sole laterally. The manual control know 29 enables the cylindrical portion 30 to be axially moved against the bias of spring 27 into a position which it is no longer in contact with the inclined surfaces 19, 20 of the levers.
FIG. 3 illustrates a position of the rollers in which the inclined surfaces 19 are in contact with the cylindrical portion 30 thus preventing the levers from pivoting around their fixes axles. In order to allow the rollers to come down from the sole into a skating position, the manual control knob and the cylinder 30 are pulled out of the sole, against the force of the spring 27, until the cylinder is no longer in contact with the inclined surfaces 19. Thus the levers are freed and the rollers fall down into the position indicated in FIG. 2 in which they protrude below the sole and ready for skating. When the manual control knob 29 is released, the spring 27 pushes the cylindrical portion 30 back into the locking position in which the inclined surfaces 20 are in contact with the cylindrical portion 30. Thus, an accidental re traction of the rollers due to the levers pivoting is prevented.
After use, the rollers can be retracted and locked inside the sole by means of the same knob.
One advantage of the skate of the present invention is that it can be used as a conventional shoe when the rollers are retracted inside the sole or as a roller skate when they are locked outside the sole. Furthermore the skate of the present invention is not much more complicated than skates designed solely for skating; therefore the present skate is highly competitive commercially.
The thickness of the sole is of necessity determined so that the rollers can be housed in the recesses of the sole. The thickness of the sole is directly dependent on the diameter chosen for the rollers.
Although the form of realization described has three rollers, it is evident that a skate as in this invention could have two or even four rollers mounted on the front and back axles.
What I claim is:
1. In a convertable roller skate comprising a thick platform having recesses in its undersurface at least adjacent its opposite ends, roller means adjacent each of said platform ends, and means supporting such rollers for movement from a retracted position fully within said recess to an operative position at least partially protruding from said recess, the improvement wherein said roller supporting means comprises a rigid lever for each such roller means, said lever carrying at one end thereof said roller means for rotation about the roller axis and being pivoted intermediate its ends to said platform on a fixed horizontal axis intermediate the platform top and bottom, whereby pivotal movement of said lever from a generally horizontal position to an inclined position moves the corresponding roller means from said retracted to said operative position and vice versa, each said lever extending in the direction of said opposite roller means and terminating at its free end in proximate spaced relation to the free end of the other lever, and a common detent means supported by said platform for engaging the mutually adjacent ends of said levers to positively hold said levers in their respective inclined positions and thereby said roller means in their respective operative protruding positions, said detent means being releasable to free said lever ends.
2. The skate of claim 1 wherein said detent means is movable to disengage from the free lever ends.
3. The skate of claim 1 wherein said detent means engages said lever ends in both said horizontal and inclined positions to maintain the levers in both said positions.
4. The skate of claim 1 wherein said platform has separate recesses therein for the separate roller means and a generally connecting channel therebetween for receiving said levers.
5. The skate of claim 1 wherein said detent means comprises a solid body having surfaces intercepting the pivotal paths of said lever ends.
6. The skate of claim 5 wherein said solid body is movable bodily out of the paths of the lever ends.
7. The skate of claim 5 wherein each lever has at its free end an inclined face extending downwardly and away from said end and said detent body is adapted to wedgingly engage the mutually facing inclined faces to hold said levers in their inclined position.
8. The skate of claim 7 wherein each lever end also has an inclined face extending upwardly and away from said end and said detent body is adapted to also wedgingly engage the latter faces to hold the levers in their respective horizontal positions.
9. The skate of claim 8 wherein said detent body is generally cylindrical in shape, being arranged in said platform on axis parallel to the lever pivotal axes, and
is movable bodily axially along said axis.

Claims (9)

1. In a convertable roller skate comprising a thick platform having recesses in its undersurface at least adjacent its opposite ends, roller means adjacent each of said platform ends, and means supporting such rollers for movement from a retracted position fully within said recess to an operative position at least partially protruding from said recess, the improvement wherein said roller supporting means comprises a rigid lever for each such roller means, said lever carrying at one end thereof said roller means for rotation about the roller axis and being pivoted intermediate its ends to said platform on a fixed horizontal axis intermediate the platform top and bottom, whereby pivotal movement of said lever from a generally horizontal position to an inclined position moves the corresponding roller means from said retracted to said operative position and vice versa, each said lever extending in the direction of said opposite roller means and terminating at its free end in proximate spaced relation to the free end of the other lever, and a common detent means supported by said platform for engaging the mutually adjacent ends of said levers to positively hold said levers in their respective inclined positions and thereby said roller means in their respectivE operative protruding positions, said detent means being releasable to free said lever ends.
2. The skate of claim 1 wherein said detent means is movable to disengage from the free lever ends.
3. The skate of claim 1 wherein said detent means engages said lever ends in both said horizontal and inclined positions to maintain the levers in both said positions.
4. The skate of claim 1 wherein said platform has separate recesses therein for the separate roller means and a generally connecting channel therebetween for receiving said levers.
5. The skate of claim 1 wherein said detent means comprises a solid body having surfaces intercepting the pivotal paths of said lever ends.
6. The skate of claim 5 wherein said solid body is movable bodily out of the paths of the lever ends.
7. The skate of claim 5 wherein each lever has at its free end an inclined face extending downwardly and away from said end and said detent body is adapted to wedgingly engage the mutually facing inclined faces to hold said levers in their inclined position.
8. The skate of claim 7 wherein each lever end also has an inclined face extending upwardly and away from said end, and said detent body is adapted to also wedgingly engage the latter faces to hold the levers in their respective horizontal positions.
9. The skate of claim 8 wherein said detent body is generally cylindrical in shape, being arranged in said platform on axis parallel to the lever pivotal axes, and is movable bodily axially along said axis.
US389536A 1972-08-21 1973-08-20 Collapsible roller skate Expired - Lifetime US3884485A (en)

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CH1244872A CH556677A (en) 1972-08-21 1972-08-21 ROLLER SKATE.

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US3884485A true US3884485A (en) 1975-05-20

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AT (1) AT322425B (en)
CA (1) CA994381A (en)
CH (1) CH556677A (en)
DE (1) DE2321669C3 (en)
DK (1) DK141573B (en)
FR (1) FR2196826B1 (en)
GB (1) GB1388234A (en)
IT (1) IT987479B (en)
NL (1) NL170702C (en)
SE (1) SE386828B (en)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008901A (en) * 1975-06-11 1977-02-22 Conn J L Triple skate attachments
US5253884A (en) * 1991-12-13 1993-10-19 Gary Landers Roller adjustment means for in line skate
US5374072A (en) * 1991-12-13 1994-12-20 Landers; Gary Roller adjustment system for in-line skates
US5398970A (en) * 1993-07-28 1995-03-21 Tucky; Edward W. Shoes for walking and roller skating
FR2715320A1 (en) * 1994-01-26 1995-07-28 Fichepain Frederic Shoe sole with retractable wheels.
US5511824A (en) * 1994-01-31 1996-04-30 Kim; Yong E. Convertible roller footwear
US5586777A (en) * 1995-06-05 1996-12-24 Wolf; David In line skate with dynamically adjustable wheels
US5765870A (en) * 1995-06-06 1998-06-16 Riley; Richard Adjustable inline skate storage and walking shoe
US5785327A (en) * 1997-06-20 1998-07-28 Gallant; Raymond J. Skates having retractable rollers
WO2000016862A1 (en) 1998-09-18 2000-03-30 Bernard Gervasoni Roller skates having improved appearance and function as walking shoes
US6120039A (en) * 1999-08-16 2000-09-19 Clementi; Fred Walking and in-line skate shoe
US6247708B1 (en) * 1999-10-12 2001-06-19 Yi-Chuan Hsu Footwear that can be worn for walking or skating
US6328318B1 (en) * 2000-03-07 2001-12-11 Yi-Chuan Hsu Dual-purpose roller skate
US6336644B1 (en) * 2000-08-02 2002-01-08 Ching-Long Chen Combined sports shoe and roller skate
US6364322B1 (en) * 2001-03-01 2002-04-02 Billy Lee Wheel lock releaser arrangement for roller skate shoe
US6386556B1 (en) * 2000-12-29 2002-05-14 Chin-Ho Yeh Roller skate
US6394468B1 (en) * 2001-05-02 2002-05-28 Kuo-Pin Chiang Dual-purpose shoe
US6402162B1 (en) * 2001-04-24 2002-06-11 Hui-Chung Liang Dual-purpose roller skate
US6406037B2 (en) 1998-12-19 2002-06-18 Chun-Cheng Chang Wheel assembly for a roller skate
US6406038B2 (en) 1999-04-01 2002-06-18 Heeling Sports Limited Heeling apparatus and method
US6454279B1 (en) * 2001-04-06 2002-09-24 Lien-Chuan Yang Skate with foldable wheels
US6464236B2 (en) * 2000-12-11 2002-10-15 Chung-Cheng Chang Wheel seat assembly for roller skate
US6474661B1 (en) * 1999-09-23 2002-11-05 Chun-Cheng Chang Base structure for roller skates
US6523836B1 (en) * 2001-09-28 2003-02-25 Chun-Cheng Chang Wheel assembly for roller skate
US6536785B2 (en) * 2001-03-01 2003-03-25 Billy Lee Roller skate shoes
WO2003041526A1 (en) * 2001-11-13 2003-05-22 Lee, Hong-Kil Shoes with roller device
US6572120B2 (en) 2001-08-21 2003-06-03 Chun-Cheng Chang Wheel assembly for roller skate
US6585273B2 (en) * 2001-01-10 2003-07-01 Michael Chiu Hidden device in a multifunctional sports shoe
US20030127811A1 (en) * 1999-04-01 2003-07-10 Adams Roger R. External wheeled heeling apparatus and method
US6629698B2 (en) * 2001-10-03 2003-10-07 Wei-Yen Chu Multifunctional shoe
US6698769B2 (en) 1999-04-01 2004-03-02 Heeling Sports Limited Multi-wheel heeling apparatus
US6764082B2 (en) 2002-02-20 2004-07-20 Mearthane Products Corporation Shoes for walking and rolling
US6926289B2 (en) 2002-01-16 2005-08-09 Guohua Wang Multifunctional shoes for walking and skating with single roller
US20060027409A1 (en) * 2004-08-04 2006-02-09 Heeling Sports Limited Motorized transportation apparatus and method
US7036829B2 (en) * 2004-01-20 2006-05-02 Maxwell Levar M Retractable skates and method therefor
US20070137302A1 (en) * 2005-12-19 2007-06-21 The Boeing Company Methods and systems for inspection of composite assemblies
US20090033046A1 (en) * 2007-08-02 2009-02-05 Donald Wilborn Roller shoe
US20090120705A1 (en) * 2007-11-13 2009-05-14 Mckinzie Bradley K Shoe with retractable motorized wheels
US20120267208A1 (en) * 2011-04-23 2012-10-25 D Angelo Eduardo Felipe Universal wheeled bag system
US20160250545A1 (en) * 2015-02-27 2016-09-01 Vladimir Yurkin Inline skate sneaker
US10945485B2 (en) 2012-08-03 2021-03-16 Heeling Sports Limited Heeling apparatus

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DE2550211C2 (en) * 1974-11-11 1983-01-13 Leo Langenthal Gumbiller Locking device for a roller and walking shoe
DE2745040A1 (en) * 1977-10-06 1979-04-12 Tec T T Wang SHOE WITH ATTACHABLE AND INTERCHANGEABLE ROLLER OR SKATE ACCESSORIES
US5947486A (en) * 1994-11-04 1999-09-07 City Glider Product Gmbh Biodynamic roller skate
FR2761275B1 (en) * 1997-04-01 1999-07-30 Claude Roybon CONFIGURABLE ROLLER SKATE IN RUNNING POSITION
FR2780896A1 (en) * 1998-07-13 2000-01-14 Gravelec Sa Boot with retractable roller skates
GB2362110B (en) * 2000-05-13 2004-02-11 Yi-Chuan Hsu Footwear that can be worn for walking or skating

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DE488743C (en) * 1929-11-11 1930-01-03 Franz Schwarz Play or sports equipment to be attached to the shoe or foot with running wheels that can be adjusted and locked in the upper or lower position

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US1468682A (en) * 1922-09-14 1923-09-25 Frank W Wallace Coaster
US2095942A (en) * 1935-05-29 1937-10-12 Knut O G Wetterstrand Roller skate
US3007709A (en) * 1957-03-15 1961-11-07 Clark J R Co Collapsible utility cart
US3306623A (en) * 1964-11-12 1967-02-28 Dorothea M Weitzner Roller skates for shoes

Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008901A (en) * 1975-06-11 1977-02-22 Conn J L Triple skate attachments
US5253884A (en) * 1991-12-13 1993-10-19 Gary Landers Roller adjustment means for in line skate
US5374072A (en) * 1991-12-13 1994-12-20 Landers; Gary Roller adjustment system for in-line skates
US5398970A (en) * 1993-07-28 1995-03-21 Tucky; Edward W. Shoes for walking and roller skating
US5797609A (en) * 1994-01-26 1998-08-25 Claude Allouche Shoe with retractable rollers
FR2715320A1 (en) * 1994-01-26 1995-07-28 Fichepain Frederic Shoe sole with retractable wheels.
US5511824A (en) * 1994-01-31 1996-04-30 Kim; Yong E. Convertible roller footwear
US5586777A (en) * 1995-06-05 1996-12-24 Wolf; David In line skate with dynamically adjustable wheels
US5765870A (en) * 1995-06-06 1998-06-16 Riley; Richard Adjustable inline skate storage and walking shoe
US5785327A (en) * 1997-06-20 1998-07-28 Gallant; Raymond J. Skates having retractable rollers
WO2000016862A1 (en) 1998-09-18 2000-03-30 Bernard Gervasoni Roller skates having improved appearance and function as walking shoes
US6634656B1 (en) * 1998-09-18 2003-10-21 Bernard Gervasoni Roller skates having improved appearance and function as walking shoes
US6406037B2 (en) 1998-12-19 2002-06-18 Chun-Cheng Chang Wheel assembly for a roller skate
US6698769B2 (en) 1999-04-01 2004-03-02 Heeling Sports Limited Multi-wheel heeling apparatus
US9242169B2 (en) 1999-04-01 2016-01-26 Heeling Sports Limited Heeling apparatus
US7063336B2 (en) 1999-04-01 2006-06-20 Heeling Sports Limited External wheeled heeling apparatus and method
US20060232027A1 (en) * 1999-04-01 2006-10-19 Adams Roger R External wheeled heeling apparatus and method
ES2245524A1 (en) * 1999-04-01 2006-01-01 Heeling Sports Limited Heeling apparatus and method
US6979003B2 (en) 1999-04-01 2005-12-27 Heeling Sports Limited Heeling apparatus and method
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Also Published As

Publication number Publication date
DE2321669A1 (en) 1974-03-07
IT987479B (en) 1975-02-20
DK141573B (en) 1980-04-28
CH556677A (en) 1974-12-13
NL170702C (en) 1982-12-16
DE2321669B2 (en) 1978-10-19
AT322425B (en) 1975-05-26
DE2321669C3 (en) 1979-06-13
FR2196826B1 (en) 1978-11-03
CA994381A (en) 1976-08-03
NL7303776A (en) 1974-02-25
FR2196826A1 (en) 1974-03-22
SE386828B (en) 1976-08-23
GB1388234A (en) 1975-03-26
DK141573C (en) 1980-10-06

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