US4319667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for seatbelt systems
Assignee: Tokai Rika Co Ltd
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Filing: 1980-07-15
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Granted: 1982-03-16
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Expires: 2000-07-15
Abstract
Abstract A locking device for seatbelt systems including a rotatable locking base with a wavy surface, a locking member provided adjacent the rotatable locking base and which is movable such that it engages with the locking base, a seatbelt portion which extends between the rotatable locking base and the locking member having an arm member with a wavy surface which senses the tension on such seatbelt portion and which engages with the locking member such that the locking member is caused to move when the arm member senses a tension on said seatbelt portion which is greater than a predetermined tension and such that the locking member presses the seatbelt portion against the rotatable base across its entire width when the locking member is caused to move by the arm member.
Inventors
- 👤 Masanao Motonami
- 👤 Jun Yasumatsu
- 👤 Yoshio Tsujiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/34; B60R22/36; B60R22/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
216 words
A locking device for a seatbelt system comprising: a frame; a rotatable base having a wavy surface supported on said frame; a locking part supported on said frame and having an arm provided with a wavy surface adjacent to said rotatable base which under ordinary conditions is separated from the rotatable base so that a passenger-restraining seatbelt is allowed to pass freely between the locking part and the rotatable base, said wavy surfaces of said rotatable base and of said arm cooperating such that when said wavy surfaces approach each other, the seatbelt passing between said wavy surfaces is formed into a wavy shape to thereby clamp the seatbelt between said locking part and the rotatable base, said arm contacting the seatbelt to cause the locking part to approach the rotatable base when the tension on the seatbelt exceeds a given value; means for resiliently securing the rotatable base at a predetermined position where the passenger restraining seatbelt is allowed to pass freely between the locking part and the rotatable base; and a coupling device which will allow the arm to rotate about a minor axis which is transverse to the length of the seatbelt whereby the locking part is caused to press the seatbelt against the rotatable base across the entire width of said seatbelt.
Claim 2
Dependent Claim
216 words
A locking device for a seatbelt system comprising: a frame; a rotatable base having a wavy surface supported on said frame; a locking part supported on said frame and having an arm provided with a wavy surface adjacent to said rotatable base which under ordinary conditions is separated from the rotatable base so that a passenger-restraining seatbelt is allowed to pass freely between the locking part and the rotatable base, said wavy surfaces of said rotatable base and of said arm cooperating such that when said wavy surfaces approach each other, the seatbelt passing between said wavy surfaces is formed into a wavy shape to thereby clamp the seatbelt between said locking part and the rotatable base, said arm contacting the seatbelt to cause the locking part to approach the rotatable base when the tension on the seatbelt exceeds a given value; means for resiliently securing the rotatable base at a predetermined position where the passenger restraining seatbelt is allowed to pass freely between the locking part and the rotatable base; and a coupling device which will allow the arm to rotate about a minor axis which is transverse to the length of the seatbelt whereby the locking part is caused to press the seatbelt against the rotatable base across the entire width of said seatbelt.
Claim 3
Dependent Claim
30 words
A locking device for a seatbelt system according to claim 1, wherein said rotatable base is a longitudinal member having a semi-circular cross-section installed in a sector-shaped pivotal support hole.
Claim 4
Dependent Claim
24 words
A locking device for a seatbelt system according to claim 2, wherein said sector-shaped pivotal support hole has a central angle of about 200°.
Claim 5
Dependent Claim
35 words
A locking device for a seatbelt system according to claim 1, 2 or 3, wherein said means is a substantially letter "C" shaped torsion spring interposed between one end of the base and said frame.
Claim 6
Dependent Claim
41 words
A locking device for a seatbelt system according to claim 1, wherein said rotatable base is provided in a concave member formed on a block fixed to said frame such that said base rotates along the surface of said concave member.
Claim 7
Dependent Claim
26 words
A locking device for a seatbelt system according to claim 5, wherein said means is a tension coil spring stretched between the base and said frame.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |