US3889898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piggyback dual lock bar
Assignee: American Safety Equipment Corp
•
Filing: 1974-04-10
•
Granted: 1975-06-17
•
Expires: 1994-04-10
Abstract
Abstract An emergency locking safety belt retractor mechanism includes a belt winding reel, at least one reel associated ratchet member having a plurality of ratchet teeth, dual locking pawl means mounted for engaging the ratchet teeth of the ratchet member and inertia responsive means for actuating one of the locking pawl means into locking engagement with the associated ratchet member. The dual locking pawl means include a pair of locking pawls mounted to the retractor in piggyback or overlying relation such that in the event the first locking pawl fails to lock with the ratchet member because of a pawl bounce condition, its deflective motion away from the ratchet member causes it to engage and move the second locking pawl into a locking condition with ratchet member, locking the reel against further protraction of the webbing.
Inventors
- 👤 Avraham Ziv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:16
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/34; B60R22/36; B60R22/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A fail safe locking mechanism for emergency locking safety belt retractors having a primary locking pawl for preventing belt protraction from the retractor by engaging a tooth of a ratchet wheel member having a plurality of ratchet teeth and comprising: a fail safe pawl and means for mounting it to said retractor in position to be moved to engage with teeth of said ratchet wheel member; and means for moveably mounting said primary locking pawl to provide for its movement against Said fail safe pawl to move the latter into engagement with a ratchet tooth of said ratchet member upon a deflective movement of said primary locking pawl relative to said ratchet member, as when said locking pawl engages a tip of a ratchet tooth and is deflected away from said ratchet member.
Claim 2
Dependent Claim
133 words
A fail safe locking mechanism for emergency locking safety belt retractors having a primary locking pawl for preventing belt protraction from the retractor by engaging a tooth of a ratchet wheel member having a plurality of ratchet teeth and comprising: a fail safe pawl and means for mounting it to said retractor in position to be moved to engage with teeth of said ratchet wheel member; and means for moveably mounting said primary locking pawl to provide for its movement against Said fail safe pawl to move the latter into engagement with a ratchet tooth of said ratchet member upon a deflective movement of said primary locking pawl relative to said ratchet member, as when said locking pawl engages a tip of a ratchet tooth and is deflected away from said ratchet member.
Claim 3
Dependent Claim
36 words
The fail safe locking mechanism of claim 1 wherein: said fail safe pawl mounting means mounts said fail safe pawl with a forward portion thereof in overlying relation to a rearward portion of said locking pawl.
Claim 4
Dependent Claim
57 words
The fail safe locking mechanism of claim 2 wherein: said means for moveably mounting said locking pawl includes means for pivotally mounting said locking pawl for pivotal movement about an approximate midportion thereof between forward and rearward portions of said locking pawl to provide a pivotal movement to said locking pawl rearward portion upon said deflective movement.
Claim 5
Dependent Claim
84 words
The fail safe locking mechanisms of claim 1 wherein a vehicle inertia responsive means is provided with an actuator member for moving said locking pawl into engagement with said ratchet wheel member upon change of vehicle inertia and wherein said means for mounting said locking pawl includes the provision of pivot means between said locking pawl and said actuator member and mounting slots in the retractor for retaining said locking pawl therein and allowing for pivotal motion of both forward and rearward portions thereof.
Claim 6
Dependent Claim
38 words
The fail safe locking mechanism of claim 1 wherein: said locking pawl is provided with embossment means on the rearward portion thereof for engagement with the underside of said fail safe pawl generally adjacent a forward portion thereof.
Claim 7
Dependent Claim
148 words
In an emergency locking safety belt retractor mechanism including a belt winding reel, at least one reel associated ratchet member having a plurality of ratchet teeth, locking pawl means mounted for engaging the ratchet teeth of said ratchet member on actuator thereof and emergency responsive means for actuating said pawl to lock said reel via said ratchet member, the improvement in locking pawl means comprising the provision of: a dual locking pawl assembly including first and second locking pawls and means for mounting each to said mechanism in position to be moved into engagement with said ratchet teeth, said first pawl being operated by said emergency responsive means; and means for actuating said second locking pawl by the defective movement of said first locking pawl in the event said first locking pawl strikes a ratchet tooth tip and is defected thereby upon actuation from said emergency responsive means.
Claim 8
Dependent Claim
148 words
In an emergency locking safety belt retractor mechanism including a belt winding reel, at least one reel associated ratchet member having a plurality of ratchet teeth, locking pawl means mounted for engaging the ratchet teeth of said ratchet member on actuator thereof and emergency responsive means for actuating said pawl to lock said reel via said ratchet member, the improvement in locking pawl means comprising the provision of: a dual locking pawl assembly including first and second locking pawls and means for mounting each to said mechanism in position to be moved into engagement with said ratchet teeth, said first pawl being operated by said emergency responsive means; and means for actuating said second locking pawl by the defective movement of said first locking pawl in the event said first locking pawl strikes a ratchet tooth tip and is defected thereby upon actuation from said emergency responsive means.
Claim 9
Dependent Claim
65 words
The improvement in locking pawl means of claim 6 wherein said means for actuating said second locking pawl by said first locking pawl includes the provision of abutment means on a rearward portion of said first pawl underlying a forward portion of said second locking pawl and said first locking pawl is pivotally mounted to pivot said abutment means against said second pawl forward portion.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |