Buckles – buttons – clasps – etc. – Strap tighteners – Accordion straps
Patent
1982-02-03
1984-03-27
Mancene, Gene
Buckles, buttons, clasps, etc.
Strap tighteners
Accordion straps
2421072, 2421074A, 2421074B, 280806, 297479, 297478, A62B 3502, B65H 7548
Patent
active
044385510
ABSTRACT:
Disclosed herein is a locking device for vehicle seat belt webbing. The device includes a fixed clamp member; a swing clamp displaceable relative to the clamp member between two positions, and a drum displaceable relative to the swing clamp between two positions and engageable at one of the two positions with the swing clamp so as to restrain itself from further rotation. The drum is displaced toward the swing clamp when a tensile force of a predetermined value or greater is applied to the webbing. When a further tensile force is exerted on the webbing, the swing clamp is displaced toward the fixed clamp member and holds the webbing firmly. Since the drum itself is locked, subsequent payout of the webbing can be substantially restrained owing to a frictional force developed between the drum and webbing. Thus, the webbing is actually locked at two locations. Since the area of contact between the webbing and the locking device, i.e., the clamp member and swing clamp as well as the drum is rather great, it is possible to avoid the centralization of the locking force. This is certainly important to protect the webbing from being cut up. As the locking device does not rely upon many guide rollers, the webbing can be pulled out with a relatively small power.
REFERENCES:
patent: 3467337 (1969-09-01), Putman
patent: 4083511 (1978-04-01), Ikesue
patent: 4208770 (1980-06-01), Takada
patent: 4249708 (1981-02-01), Asano
patent: 4306735 (1981-12-01), Pfeiffer et al.
patent: 4319667 (1982-03-01), Motonami et al.
patent: 4327881 (1982-05-01), Fohl
patent: 4378915 (1983-04-01), Fohl
Mancene Gene
NSK-Warner K.K.
Tarnoff David I.
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