US2048471A - Conduit - Google Patents
Conduit Download PDFInfo
- Publication number
- US2048471A US2048471A US438982A US43898230A US2048471A US 2048471 A US2048471 A US 2048471A US 438982 A US438982 A US 438982A US 43898230 A US43898230 A US 43898230A US 2048471 A US2048471 A US 2048471A
- Authority
- US
- United States
- Prior art keywords
- conduit
- strand
- cable
- wound
- drawn
- 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 - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/26—Construction of guiding-sheathings or guiding-tubes
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/45—Flexibly connected rigid members
- Y10T403/459—Helical spring type coupling
Definitions
- This invention relates to conduits and more particularly to flexible conduits and a process for the manufacture thereof.
- An object of the invention is to provide a fiexible conduit which may be bent in various positions without injury thereto.
- Another object of the invention is to provide a flexible conduit for a cable which will not chafe or otherwise injure the cable.
- Another object of the invention is to provide a helical conduit, each convolution of which is so to the adjacent convolution that the conduit may be bentwithout disturbing the continuity of the inner diameter of the cable or causing a separation between the respective convolutions.
- a further object of the invention is to provide a helical conduit with a covering wound thereon in an opposite direction with no space between the conduit and the covering, thus preventing compression.
- a still further object of the invention is to I provide a flexible conduit formed of a single helically wound element having tapered side walls and cation, and in which:
- Figure 1 is a side elevation of a section of a conduit partly broken away with a cable positioned therein embodying the invention
- Figure 2 is a side elevation of a die illustrating the form'in which the strand is drawn;
- Figure 3 is a cross sectional view of the strand after drawing
- Figure 4 is a modified form of the invention illustrating a section of a conduit partly broken away and a cable positioned therein;
- Figure 5 is an end elevation of the die illustrating the form in which a strand is drawn preparatory to winding
- FIG. 6 is a cross sectional view of the strand drawn and'coiled to form the Referring to the drawing for more specific details of the invention, Ill represents a conduit having a covering II and a.”
- cable I! is positioned in the conduit.
- the conduit is a helix wound in one direction and the covering is a helix wound in the opposite direction.
- the conduit is wound from a single strand l3.
- This strand is first drawn 5 ing the strand is deformed by squaring, as indicated at l9, and rounding the corners and 2
- the form which the strand takes upon winding is largely due to the upsetting of the inner surface and drawing the outer surface. bodiment of the invention,
- the strand forming the helix I 0 is drawn through a die to incline one of its sides outwardly, as indicated at 22, and to round the corners 23 and 24;
- the strand takes the form shown in Figure 6, wherein the strand is somewhat flattened and the width at its top portion 26 than at its base 21, hence, the respective convolutions of the helix engage each other at their inner edges and since the engaging portions are rounded, may be bent in various positions within certain limits restricted by the degree of the inclination of the sides 25 without disturbing the continuity of the conduit and causing injury to the cable po- Itwill be observed that when convolutions of the conduit whereupon dirt and grit is prevented from entering the conduit.
Description
Patented July 21, 1936 CONDUIT Roy Sanford, South ndix Brake corporation of Illinois Application March 26, 1930, Serial No.
2 Claims.
This invention relates to conduits and more particularly to flexible conduits and a process for the manufacture thereof.
An object of the invention is to provide a fiexible conduit which may be bent in various positions without injury thereto.
Another object of the invention is to provide a flexible conduit for a cable which will not chafe or otherwise injure the cable.
Another object of the invention is to provide a helical conduit, each convolution of which is so to the adjacent convolution that the conduit may be bentwithout disturbing the continuity of the inner diameter of the cable or causing a separation between the respective convolutions.
A further object of the invention is to provide a helical conduit with a covering wound thereon in an opposite direction with no space between the conduit and the covering, thus preventing compression.
A still further object of the invention is to I provide a flexible conduit formed of a single helically wound element having tapered side walls and cation, and in which:
Figure 1 is a side elevation of a section of a conduit partly broken away with a cable positioned therein embodying the invention;
Figure 2,is a side elevation of a die illustrating the form'in which the strand is drawn;
Figure 3 is a cross sectional view of the strand after drawing;
Figure 4 is a modified form of the invention illustrating a section of a conduit partly broken away and a cable positioned therein;
Figure 5 is an end elevation of the die illustrating the form in which a strand is drawn preparatory to winding; and
Figure 6 is a cross sectional view of the strand drawn and'coiled to form the Referring to the drawing for more specific details of the invention, Ill represents a conduit having a covering II and a." cable I! is positioned in the conduit. The conduit is a helix wound in one direction and the covering is a helix wound in the opposite direction. In practice, the metallic strands from which the conduit and cover- Gompany, South Bend, Ind., assignor-to Bend, Ind., a
438,982 (or. e4 s) ing are wound are both heat treated and wound with no space between the conduitand the covering to prevent compression.
The conduit is wound from a single strand l3.
This strand is first drawn 5 ing the strand is deformed by squaring, as indicated at l9, and rounding the corners and 2|. The form which the strand takes upon winding is largely due to the upsetting of the inner surface and drawing the outer surface. bodiment of the invention,
In the modification, the strand forming the helix I 0 is drawn through a die to incline one of its sides outwardly, as indicated at 22, and to round the corners 23 and 24; Upon winding, the strand takes the form shown in Figure 6, wherein the strand is somewhat flattened and the width at its top portion 26 than at its base 21, hence, the respective convolutions of the helix engage each other at their inner edges and since the engaging portions are rounded, may be bent in various positions within certain limits restricted by the degree of the inclination of the sides 25 without disturbing the continuity of the conduit and causing injury to the cable po- Itwill be observed that when convolutions of the conduit whereupon dirt and grit is prevented from entering the conduit.
While preferred embodiments of the invention have been described, it is to be understood that these are given merely as examples of the underlying principles of the invention and since these may be incorporated in other specific mechanical structures, I do not intend to be limited to those shown, except as such limitations are clearly imposed by the appended claims.
Having thus described the various features of the invention, what I claim is new and desire to secure by Letters Patent is:
July 21, 1936. R, 5 SANFORD 2,048,472
BRAKE Filed April 25, 1951 v 2 Sheets-Sheet 1 III I N V EN TOR. For 5 5,4NFOAD A TTORNE Y.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US438982A US2048471A (en) | 1930-03-26 | 1930-03-26 | Conduit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US438982A US2048471A (en) | 1930-03-26 | 1930-03-26 | Conduit |
Publications (1)
Publication Number | Publication Date |
---|---|
US2048471A true US2048471A (en) | 1936-07-21 |
Family
ID=23742808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US438982A Expired - Lifetime US2048471A (en) | 1930-03-26 | 1930-03-26 | Conduit |
Country Status (1)
Country | Link |
---|---|
US (1) | US2048471A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2580991A (en) * | 1949-04-02 | 1952-01-01 | Quick Change Carriers Inc | Guide tube |
US5165421A (en) * | 1987-09-30 | 1992-11-24 | Lake Region Manufacturing Co., Inc. | Hollow lumen cable apparatus |
US6210395B1 (en) | 1987-09-30 | 2001-04-03 | Lake Region Mfg., Inc. | Hollow lumen cable apparatus |
US6267679B1 (en) | 1997-12-31 | 2001-07-31 | Jack W. Romano | Method and apparatus for transferring drilling energy to a cutting member |
US6685696B2 (en) | 1987-09-30 | 2004-02-03 | Lake Region Manufacturing, Inc. | Hollow lumen cable apparatus |
-
1930
- 1930-03-26 US US438982A patent/US2048471A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2580991A (en) * | 1949-04-02 | 1952-01-01 | Quick Change Carriers Inc | Guide tube |
US5165421A (en) * | 1987-09-30 | 1992-11-24 | Lake Region Manufacturing Co., Inc. | Hollow lumen cable apparatus |
US6210395B1 (en) | 1987-09-30 | 2001-04-03 | Lake Region Mfg., Inc. | Hollow lumen cable apparatus |
US6685696B2 (en) | 1987-09-30 | 2004-02-03 | Lake Region Manufacturing, Inc. | Hollow lumen cable apparatus |
US6267679B1 (en) | 1997-12-31 | 2001-07-31 | Jack W. Romano | Method and apparatus for transferring drilling energy to a cutting member |
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