US3716894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rope fittings
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1971-01-05
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Granted: 1973-02-20
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Expires: 1991-01-05
Abstract
Abstract Simplified means for terminating fiber ropes comprising a conical member and a tapered socket therefor, the taper of each being such as to produce substantially constant annular area therebetween equal to the total cross-sectional area of the rope and the cone angle of the conical member being less than the natural angle of friction between the member and the rope fibers.
Inventors
- 👤 D Kingston
- 👤 F Nattrass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
F; F16; F16G; F16G11/00; F16G11/04; F16G11/05
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A means for terminating an end of a fiber rope comprising a socket at least part of the inner wall of which is tapered, a conical member fitting within the socket so as to provide a space between the tapered inner socket wall and the surface of the member of substantially constant annular area equal to the total cross-sectional area of the fibers in the rope end, the included cone angle of the conical member being less than the natural angle of friction between the material of the conical member and the fibers and the lengths of the tapered parts of the socket and the conical member are greater than the diameter of the rope.
Claim 2
Dependent Claim
115 words
A means for terminating an end of a fiber rope comprising a socket at least part of the inner wall of which is tapered, a conical member fitting within the socket so as to provide a space between the tapered inner socket wall and the surface of the member of substantially constant annular area equal to the total cross-sectional area of the fibers in the rope end, the included cone angle of the conical member being less than the natural angle of friction between the material of the conical member and the fibers and the lengths of the tapered parts of the socket and the conical member are greater than the diameter of the rope.
Claim 3
Dependent Claim
115 words
A means for terminating an end of a fiber rope comprising a socket at least part of the inner wall of which is tapered, a conical member fitting within the socket so as to provide a space between the tapered inner socket wall and the surface of the member of substantially constant annular area equal to the total cross-sectional area of the fibers in the rope end, the included cone angle of the conical member being less than the natural angle of friction between the material of the conical member and the fibers and the lengths of the tapered parts of the socket and the conical member are greater than the diameter of the rope.
Claim 4
Dependent Claim
115 words
A means for terminating an end of a fiber rope comprising a socket at least part of the inner wall of which is tapered, a conical member fitting within the socket so as to provide a space between the tapered inner socket wall and the surface of the member of substantially constant annular area equal to the total cross-sectional area of the fibers in the rope end, the included cone angle of the conical member being less than the natural angle of friction between the material of the conical member and the fibers and the lengths of the tapered parts of the socket and the conical member are greater than the diameter of the rope.
Claim 5
Dependent Claim
41 words
A means as in claim 1 wherein the lengths of the tapered parts of the socket and the conical member are at least 6D, where D is the diameter of a circle of area equal to the total fiber cross-sectional area.
Claim 6
Dependent Claim
29 words
A means according to claim 1 wherein the upper end of the socket is substantially cylindrical and has transverse apertures therethrough for attachment by shackle means to a fixture.
Claim 7
Dependent Claim
28 words
A means according to claim 1 wherein the upper end of the socket is formed into two lugs having apertures for attachment by mounting means to a fixture.
Claim 8
Dependent Claim
26 words
A means according to claim 1 wherein the socket is made of a metal selected from the group consisting of mild steel, stainless steel or brass.
Claim 9
Dependent Claim
16 words
A means according to claim 1 wherein the conical member is made of a polymeric material.
Claim 10
Dependent Claim
22 words
A means according to claim 6 wherein the polymeric material is selected from the group consisting of nylon 66 or poly(ethylene terephthalate).
References Cited (Backward Citations)
US1466127A
Cited
US1758218A
Cited
US3085305A
Cited
US3023535A
Cited
US3048908A
Cited
US3570074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |