US3861744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety belt
Assignee: Ashimori Industry Co Ltd
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Filing: 1973-04-05
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Granted: 1975-01-21
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Expires: 1993-04-05
Abstract
Abstract A safety belt having controlled elongation characteristics. The elongation capacity remains negligible under small tensile loads but increases sharply when the belt is stressed above a certain load level up to a predetermined extent of elongation after which further elongation is strongly resisted. Preferably, the belt exhibits a minimum tendency to recover from such elongation by contraction even after release of the tensile load.
Inventors
- 👤 Hirokazu Yamada
- 👤 Akihiro Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/12; B60R22/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
In a safety belt for an automotive vehicle and the like wherein a portion of the body of an occupant is encircled by an elongated belt body of substantially non-extensible material having its ends anchored to the vehicle frame to restrain and protect such occupant in the event of a primary impact upon said vehicle, the improvement comprising an expanshion loop or bight formed in such belt body at at least one point between its ends, such expansion loop or bight being of a length to provide upon release thereof limited extension of the belt body up to about 35 percent but short of a length permitting secondary impact of the encircled portion of said occupant against an adjacent part of the vehicle, and yieldable connecting means extending between the loop ends to hold such ends together and constituted essentially of substantially non-elastic undrawn synthetic strands having a capacity to undergo substantial elongation with negligible recovery of elasticity when stressed above a predetermined load below the breaking load thereof and thereby permit release of said loop.
Claim 2
Dependent Claim
176 words
In a safety belt for an automotive vehicle and the like wherein a portion of the body of an occupant is encircled by an elongated belt body of substantially non-extensible material having its ends anchored to the vehicle frame to restrain and protect such occupant in the event of a primary impact upon said vehicle, the improvement comprising an expanshion loop or bight formed in such belt body at at least one point between its ends, such expansion loop or bight being of a length to provide upon release thereof limited extension of the belt body up to about 35 percent but short of a length permitting secondary impact of the encircled portion of said occupant against an adjacent part of the vehicle, and yieldable connecting means extending between the loop ends to hold such ends together and constituted essentially of substantially non-elastic undrawn synthetic strands having a capacity to undergo substantial elongation with negligible recovery of elasticity when stressed above a predetermined load below the breaking load thereof and thereby permit release of said loop.
Claim 3
Dependent Claim
31 words
The belt of claim 1 wherein said yieldable connecting means comprises a length of fabric having the warp threads thereof formed of said synthetic strands and extending between said loop ends.
References Cited (Backward Citations)
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Cited
US2474124A
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US2823046A
Cited
US3302973A
Cited
US3424495A
Cited
US3561819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |