US4230289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic wind-up roller for safety belts
Assignee: TRW Repa Feinstanzwerk GmbH
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Filing: 1979-05-29
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Granted: 1980-10-28
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Expires: 1999-05-29
Abstract
Abstract Automatic wind-up roller for a safety belt with means to stop the belt from unwinding in case of danger. The wind-up roller has a release mechanism activated when a predetermined acceleration or deceleration is exceeded, a control lever activated by the release mechanism, a control disc with elastic yielding control teeth which couple with the control lever, and a locking mechanism activated by the control disc to block the control shaft.
Inventors
- 👤 Artur Fohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:55
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/34; B60R22/36; B60R22/405
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
Automatic wind-up roller for a safety belt of a vehicle with means to block a belt shaft on which the safety belt is wound in case of danger, having a housing, a belt shaft rotatably supported in the housing, a safety belt rolled around the belt shaft, a release mechanism which is activated when a predetermined acceleration or deceleration of the vehicle is exceeded, a control lever activated by the release mechanism, a control disc rotatable with respect to the belt shaft, said control disc having elastic, yielding control teeth which couple with the control lever when the latter is activated, and a locking mechanism activated by said control disc to block said belt shaft.
Claim 2
Dependent Claim
115 words
Automatic wind-up roller for a safety belt of a vehicle with means to block a belt shaft on which the safety belt is wound in case of danger, having a housing, a belt shaft rotatably supported in the housing, a safety belt rolled around the belt shaft, a release mechanism which is activated when a predetermined acceleration or deceleration of the vehicle is exceeded, a control lever activated by the release mechanism, a control disc rotatable with respect to the belt shaft, said control disc having elastic, yielding control teeth which couple with the control lever when the latter is activated, and a locking mechanism activated by said control disc to block said belt shaft.
Claim 3
Dependent Claim
33 words
Automatic wind-up roller for a safety belt according to claim 1 wherein the control teeth extend from the control disc in the form of ray-shaped control teeth and have small knife-shaped tooth edges.
Claim 4
Dependent Claim
64 words
Automatic wind-up rollers for a safety belt according to claim 1, wherein said means to block a belt shaft comprise a locking pawl which moves into engagement with locking teeth, and wherein the control disc is provided with a control cam, which at a relative motion between the belt shaft and the control disc moves the locking pawl into engagement with the locking teeth.
Claim 5
Dependent Claim
30 words
Automatic wind-up roller for a safety belt according to claim 3 wherein the locking teeth are coaxial to the control disc and have the same tooth arrangement and tooth number.
Claim 6
Dependent Claim
65 words
Automatic wind-up roller for a safety belt according to claim 3, wherein the control disc is in fixed connection with an inertia disc which latter does not follow at the same rate of rotation as the belt shaft when there is a sudden or rapid withdrawal of the belt, and as a consequence relative motion between the control disc and the belt shaft takes place.
Claim 7
Dependent Claim
32 words
Automatic wind-up roller for a safety belt according to claim 5, wherein the fixed connection is by means of detent projections extending from the control disc into openings in said inertia disc.
Claim 8
Dependent Claim
30 words
Automatic wind-up roller for a safety belt according to claim 5, wherein the inertia disc has a support projection on which support projection the control disc is in fixed position.
Claim 9
Dependent Claim
55 words
Automatic wind-up roller for a safety belt according to claim 3, wherein said locking teeth are in the form of a toothed locking ring with internal teeth secured to the housing coaxially to the belt shaft and wherein said control disc and the hingeable locking pawl are rotatable on a pin of the belt shaft.
Claim 10
Dependent Claim
66 words
Automatic wind-up roller for a safety belt according to claim 8, wherein an inertia disc is also rotatable on said pin of the belt shaft which disc does not follow the same rate of rotation as the belt shaft when there is a sudden or rapid withdrawal of the belt and as a consequence relative motion between the control disc and the belt shaft takes place.
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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |