CA1218221A - Restraint for flexible conduits - Google Patents
Restraint for flexible conduitsInfo
- Publication number
- CA1218221A CA1218221A CA000445535A CA445535A CA1218221A CA 1218221 A CA1218221 A CA 1218221A CA 000445535 A CA000445535 A CA 000445535A CA 445535 A CA445535 A CA 445535A CA 1218221 A CA1218221 A CA 1218221A
- Authority
- CA
- Canada
- Prior art keywords
- loops
- cable
- safety device
- flow conduits
- size
- 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
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A device used to restrain the flying or whipping of hoses that are accidentally detached while under pressure.
The device is formed of a cable halter having slip-knot snares at each of the extremities for engagement about the hoses at a position on both sides of the expected place of sep-aration, a pair of springs forcing the snares to close, so as to obtain a tight engagement with the hoses, and a safety fastener adapted to lock together the hose connectors. The safety fastener is connected to the cable halter by means of a secondary cable, which encircles the hoses to keep the halter cable close to the hoses.
A device used to restrain the flying or whipping of hoses that are accidentally detached while under pressure.
The device is formed of a cable halter having slip-knot snares at each of the extremities for engagement about the hoses at a position on both sides of the expected place of sep-aration, a pair of springs forcing the snares to close, so as to obtain a tight engagement with the hoses, and a safety fastener adapted to lock together the hose connectors. The safety fastener is connected to the cable halter by means of a secondary cable, which encircles the hoses to keep the halter cable close to the hoses.
Description
FIELD OF TIIE INVENTION
The lnven-tion relates -to a device used -to restrain the flying or whipping of flexible conduits when becoming de-tached while under pressure.
DESCRIPTION OF T~IE PRIOR ART
In order to provide -the safer working conditions now required, a number of devices have been developed to restrain the flying or whipping of a flexible conduit. One such device is shown in U.S. Patent 3,859,692 dated January 14, 1975, to Waterman, and comprises a double-strand cable halter forming end loops that are engageable about the condui-t on bo-th sides of the quick disconnect connector~ In such an arrangemen-t, one end loop often slips off a conduit section when -the lat-ter separates, for instance, at one of the connector halves, because the eli~ loops are not held tight enough aronnd the conduit sections. Also, the cable halter is only held to the conduit at its extremities and its loose intermediate portion can cause an accident if someo~e ge-ts caugh-t therein and trips. Finally, a separate locking device must be used to lock the two halves of the quick disconnect connector.
OBJECTS OF THE IN~ENTION
_ _ _ . _ It is therefore the main object of the invention to provide a halter cable with slip-knot type snares which will positively and firmly tighten around the conduit ,.
sections upon their separation.
It is another object of the invention to provide means to secure the halter cable to the conduit at an inter-tnediate point in between its extremities It is a further object of the invention to provide a safety fastener a-ttached to the halter cable and engaginc3 the quick disconnect connector halves to loc~ the same .'";,f',~
~z~
together.
I-t is a further object of the invention ~o provide a ~ess expensive security dev.ice to restrain the fl.ying or whipping of a flexible conduit.
SUMMARY OF T~IE INVE~TION
A safety device for use in conjunction with separable flow conduits comprising a single strand of material having a non-variable size end loop a-t each of its extremities, and the end loops fre~ly sliding abou-t the s-trand of material to form opposite variable size main loops for engagement about the flow c~nduit at a position on both sides of an expect~d place of separation of the conduit and resilient means acting on the end loops to reduce the opening of the main loops and to allow their installation on condui-ts of various sizes.
Preferably, a safety fastener is attached to the halter cable by a branch cable; the fastener serves to 'รจ!e lock together the two halves of the quick disconnect con-nect~r, while the branch cable can be wound around the conduit to keep the halter cable close thereto in an out-of-tne-way position.
BRIEF DESCRIr~TION OF THE DRAWINGS
Figure 1 is a top plan view of the invention;
Figure 2 is a perspective view illustrating the installa ion of the invention on a flexible conduit; and ~.
Figuxe 3 is a fragmentary perspective view ill.us-tratin.g the operative position of the safety device of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in Figure 2, the restraint of the inv~ntion is formed of a stranded wire 1 ended at both extremities by non-variable size end loops 2 and 3, which are respec-tively closed by means of cable clamps 4 and 5. ~ ~
The end loops 2 and 3 are freely sliding about the wire 1 to form varlahle size main loops 6 and 7.
A pair of compression springs 8 and 9, having a diameter substantially larger than the diameter of the wire 1, surround the wire 1 in between the main loops 6 and 7 and exert a closing force on the latter.
The springs 8 and 9 abut agains-t the loops 2 and 3 with -the interposition of rings 10 and 11 and are sep arated from each other by means of a central ring 12 to which is fastened a safety fastener 13 by means of a branch wire 14. The rings 10, 11, and 12 are all free to slide about the wire 1.
The branch wire 14 comprises non-variable size loops 15 and 16 at its extremities; the loops are respect-ively closed by the cable clamps 17 and 18 and are respect-ively engaging the safety fastener 13 and the central ring 12.
~ Figure 2 illustrates two hose sections 19 and 20 about to be secured together by means of a quick disconnect connector 21.
The main loops 6 and 7 engage about the hose or flexible conduit sections 19 and 20 beyond complementary connector halves 22 and 23 of the quick disconnect con-nector 21, the main loops 6 and 7 being automatlcally ..,~ .
initially tightened because of the force exerted by the springs 8 and 9.
The connec-lor halves 22 and 23 respectively ca~v~ ollally~ comprise a pair of hook-shaped arms 24 and 25 engaging wi.th corresponding facing flang~s.26-.a~d 27. Holes 28 and 29 are p:ierced on each facing flange 22 and 23 and come in register when the two connector halves 82i~L
are relatively ro-tated to connected position andl thus, holes 2~, ~9 can rece.ive the safety fasterler 13, as shown in Figure 3.
The branch wire 14 is coiled around the condult and the halter cable 1 before inserting safety fas-tener 13 through holes 28, 29. In such an arrangement, the security is increased because the cable 1 is not loose on the ground intermediate its ends and, -therefore, cannot cause tripping of a person walking nearby. The branch wire 14 and safety fastener can also be used to secure the conduit to a structure.
In most cases, hose failure occurs at the joint between a flexible hose section 19 or 20 and it~ rigid connec~or half 23 or 22. Upon such occurrence, the asso-ciated main loop 7 or 6 will not slip of-~ the hose section, because it will immediately become tightened on the hose section independently of the action of springs 8 and 9, the tightening forc~ increasing with the tension exerted by t~e portion of the cable 1 between the main loops 6 and A double-flanged sleeve (not shown) is preferably inserted within each end loop 2 and 3 with the end loop tightened on the sleeve by clamp 4, 5 between the two flanges of the sleeve. The latter slidably surrounds wire 1 in order to reduce friction and, thus, increase the tightening effect of the main loops on the hose sections 19, 20. This sleeve can be made of metal, plastic, such as nylon, or even of wood. This sleeve will also increase the useful life of the safety device.
For certain applications, the branch wire 14 can be eliminated and the fastener 13 directly attached to centralrincJ 12. This induces the user to position the two ~L2~
main loops a-t the proper places on -the hose sections well beyond -t~le respective connector halv~s 22 and 23.
.. . .
The lnven-tion relates -to a device used -to restrain the flying or whipping of flexible conduits when becoming de-tached while under pressure.
DESCRIPTION OF T~IE PRIOR ART
In order to provide -the safer working conditions now required, a number of devices have been developed to restrain the flying or whipping of a flexible conduit. One such device is shown in U.S. Patent 3,859,692 dated January 14, 1975, to Waterman, and comprises a double-strand cable halter forming end loops that are engageable about the condui-t on bo-th sides of the quick disconnect connector~ In such an arrangemen-t, one end loop often slips off a conduit section when -the lat-ter separates, for instance, at one of the connector halves, because the eli~ loops are not held tight enough aronnd the conduit sections. Also, the cable halter is only held to the conduit at its extremities and its loose intermediate portion can cause an accident if someo~e ge-ts caugh-t therein and trips. Finally, a separate locking device must be used to lock the two halves of the quick disconnect connector.
OBJECTS OF THE IN~ENTION
_ _ _ . _ It is therefore the main object of the invention to provide a halter cable with slip-knot type snares which will positively and firmly tighten around the conduit ,.
sections upon their separation.
It is another object of the invention to provide means to secure the halter cable to the conduit at an inter-tnediate point in between its extremities It is a further object of the invention to provide a safety fastener a-ttached to the halter cable and engaginc3 the quick disconnect connector halves to loc~ the same .'";,f',~
~z~
together.
I-t is a further object of the invention ~o provide a ~ess expensive security dev.ice to restrain the fl.ying or whipping of a flexible conduit.
SUMMARY OF T~IE INVE~TION
A safety device for use in conjunction with separable flow conduits comprising a single strand of material having a non-variable size end loop a-t each of its extremities, and the end loops fre~ly sliding abou-t the s-trand of material to form opposite variable size main loops for engagement about the flow c~nduit at a position on both sides of an expect~d place of separation of the conduit and resilient means acting on the end loops to reduce the opening of the main loops and to allow their installation on condui-ts of various sizes.
Preferably, a safety fastener is attached to the halter cable by a branch cable; the fastener serves to 'รจ!e lock together the two halves of the quick disconnect con-nect~r, while the branch cable can be wound around the conduit to keep the halter cable close thereto in an out-of-tne-way position.
BRIEF DESCRIr~TION OF THE DRAWINGS
Figure 1 is a top plan view of the invention;
Figure 2 is a perspective view illustrating the installa ion of the invention on a flexible conduit; and ~.
Figuxe 3 is a fragmentary perspective view ill.us-tratin.g the operative position of the safety device of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in Figure 2, the restraint of the inv~ntion is formed of a stranded wire 1 ended at both extremities by non-variable size end loops 2 and 3, which are respec-tively closed by means of cable clamps 4 and 5. ~ ~
The end loops 2 and 3 are freely sliding about the wire 1 to form varlahle size main loops 6 and 7.
A pair of compression springs 8 and 9, having a diameter substantially larger than the diameter of the wire 1, surround the wire 1 in between the main loops 6 and 7 and exert a closing force on the latter.
The springs 8 and 9 abut agains-t the loops 2 and 3 with -the interposition of rings 10 and 11 and are sep arated from each other by means of a central ring 12 to which is fastened a safety fastener 13 by means of a branch wire 14. The rings 10, 11, and 12 are all free to slide about the wire 1.
The branch wire 14 comprises non-variable size loops 15 and 16 at its extremities; the loops are respect-ively closed by the cable clamps 17 and 18 and are respect-ively engaging the safety fastener 13 and the central ring 12.
~ Figure 2 illustrates two hose sections 19 and 20 about to be secured together by means of a quick disconnect connector 21.
The main loops 6 and 7 engage about the hose or flexible conduit sections 19 and 20 beyond complementary connector halves 22 and 23 of the quick disconnect con-nector 21, the main loops 6 and 7 being automatlcally ..,~ .
initially tightened because of the force exerted by the springs 8 and 9.
The connec-lor halves 22 and 23 respectively ca~v~ ollally~ comprise a pair of hook-shaped arms 24 and 25 engaging wi.th corresponding facing flang~s.26-.a~d 27. Holes 28 and 29 are p:ierced on each facing flange 22 and 23 and come in register when the two connector halves 82i~L
are relatively ro-tated to connected position andl thus, holes 2~, ~9 can rece.ive the safety fasterler 13, as shown in Figure 3.
The branch wire 14 is coiled around the condult and the halter cable 1 before inserting safety fas-tener 13 through holes 28, 29. In such an arrangement, the security is increased because the cable 1 is not loose on the ground intermediate its ends and, -therefore, cannot cause tripping of a person walking nearby. The branch wire 14 and safety fastener can also be used to secure the conduit to a structure.
In most cases, hose failure occurs at the joint between a flexible hose section 19 or 20 and it~ rigid connec~or half 23 or 22. Upon such occurrence, the asso-ciated main loop 7 or 6 will not slip of-~ the hose section, because it will immediately become tightened on the hose section independently of the action of springs 8 and 9, the tightening forc~ increasing with the tension exerted by t~e portion of the cable 1 between the main loops 6 and A double-flanged sleeve (not shown) is preferably inserted within each end loop 2 and 3 with the end loop tightened on the sleeve by clamp 4, 5 between the two flanges of the sleeve. The latter slidably surrounds wire 1 in order to reduce friction and, thus, increase the tightening effect of the main loops on the hose sections 19, 20. This sleeve can be made of metal, plastic, such as nylon, or even of wood. This sleeve will also increase the useful life of the safety device.
For certain applications, the branch wire 14 can be eliminated and the fastener 13 directly attached to centralrincJ 12. This induces the user to position the two ~L2~
main loops a-t the proper places on -the hose sections well beyond -t~le respective connector halv~s 22 and 23.
.. . .
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED, ARE DEFINED AS
FOLLOWS:
1. A safety device for use in conjunction with separable flow conduits carrying a pressurized fluid, com-prising: a single flexible strand of material, each end portion of which is folded about itself and forms a non-variable-size end loop, said end loops freely slidable in both directions about said strand of material to form opposite variable-size main loops for engagement about respective flow conduits at respective positions on both sides of an expected place of separation of said flow conduits, and resilient means acting on said end loops to reduce the size of said main loops and to allow instal-lation of said main loops on flow conduits of various sizes.
2. The safety device as defined in claim 1, wherein said resilient means is at least one compression coil spring surrounding the portion of said flexible strand of material intermediate said main loops and pressing against said end loops.
3. The safety device as defined in claim 1, wherein said resilient means consist of two compression coil springs freely surrounding the portion of said flexible strand of material intermediate said main loops and in end-to end relationship; and rings freely surrounding said portion and located between the proximate ends of said two compression coil springs and between the opposite ends of said compression coil springs and said end loops, respect-ively.
4. A safety device for use in conjunction with separable pressurized flow conduits, each flow conduit having an end attached to a quick disconnect rigid complement-ary connector half used to couple said flow conduits, the connector halves rotatable relative to each other between a connected and a disconnected position, each connector half having a facing flange with a hole , the connector halves holes registering with each other when said connector halves are in said connected position; said safety device compris-ing a single flexible cable having a non-variable-size end loop at each of its extremities, said end loops freely slidable about the remaining segment of said flexible cable in between said end loops to form opposite variable-size main loops for engagement about a respective flow conduit at respective positions on both sides of, and spaced from, the connected connector halves, resilient means acting on said end loops to reduce the size of said variable-size main loops and to allow installation of the latter on flow conduits of various sizes, said safety device further including a safety fastener adapted to removably extend through the registering connector halves holes and to lock said connector halves in said connected position, and connecting means connecting said safety fastener to the portion of said cable intermediate said main loops.
5. The safety device as defined in claim 4, wherein said resilient means comprises a pair of compres-sion coil springs freely surrounding said portion of said cable intermediate said main loops and disposed in end-to-end relationship along the last-mentioned cable portion;
rings freely surrounding and slidable along the last-mentioned cable portion and including one ring disposed intermediate said coil springs and the other rings disposed intermediate the respective coil springs and the respect-ive adjacent end loops, said one ring forming part of said connecting means.
rings freely surrounding and slidable along the last-mentioned cable portion and including one ring disposed intermediate said coil springs and the other rings disposed intermediate the respective coil springs and the respect-ive adjacent end loops, said one ring forming part of said connecting means.
6. The safety device as defined in claim 5, wherein said connecting means further include an additional flexible cable attached to said safety fastener at one end and to said one ring at its other end, and of a length suf-ficient to be coiled around said flow conduits and said connected connector halves and around the first-named cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000445535A CA1218221A (en) | 1984-01-18 | 1984-01-18 | Restraint for flexible conduits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000445535A CA1218221A (en) | 1984-01-18 | 1984-01-18 | Restraint for flexible conduits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1218221A true CA1218221A (en) | 1987-02-24 |
Family
ID=4126972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000445535A Expired CA1218221A (en) | 1984-01-18 | 1984-01-18 | Restraint for flexible conduits |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1218221A (en) |
-
1984
- 1984-01-18 CA CA000445535A patent/CA1218221A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |