US3955467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uni-directional rope
Assignee: Individual
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Filing: 1974-11-25
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Granted: 1976-05-11
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Expires: 1994-11-25
Abstract
Abstract A rope is formed by using at least four warps running parallel to each other and positioned such that when viewed in cross section, their centers fall on the corners of a square. These parallel warps are held together by bobbin threads passing about diagonally opposite warps. The parallel warps result in minimum elongation of the rope when under tension.
Inventors
- 👤 Edwin W. Johnson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:22
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; D04C1/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A uni-directional rope comprising, in combination: a. four warps running parallel to each other and positioned such that when viewed in cross section, their centers fall on the corners of a square to define first and second diagonally opposite pairs; b. a fifth warp passing centrally of the four warps in parallel relationship such that its center coincides with the geometric center of said square; c. a first bobbin thread passing directly about the first diagonally opposite pair without crossing between said pair so that opposite side portions of said fifth warp are held between the first pair; and, d. a second bobbin thread passing directly about the second diagonally opposite pair without crossing between said second pair so that opposite side portions of said fifth warp circumferentially spaced 90° from said first mentioned opposite side portions are held between the second pair so that the outer four warps are bound to said fifth warp without any portion of the first bobbin thread crossing itself and without any portion of the second bobbin thread crossing itself, the parallel warps resulting in minimum elongation of said rope when under tension.
Claim 2
Dependent Claim
189 words
A uni-directional rope comprising, in combination: a. four warps running parallel to each other and positioned such that when viewed in cross section, their centers fall on the corners of a square to define first and second diagonally opposite pairs; b. a fifth warp passing centrally of the four warps in parallel relationship such that its center coincides with the geometric center of said square; c. a first bobbin thread passing directly about the first diagonally opposite pair without crossing between said pair so that opposite side portions of said fifth warp are held between the first pair; and, d. a second bobbin thread passing directly about the second diagonally opposite pair without crossing between said second pair so that opposite side portions of said fifth warp circumferentially spaced 90° from said first mentioned opposite side portions are held between the second pair so that the outer four warps are bound to said fifth warp without any portion of the first bobbin thread crossing itself and without any portion of the second bobbin thread crossing itself, the parallel warps resulting in minimum elongation of said rope when under tension.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |