Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1977-07-21
1979-01-23
Hornsby, Harvey C.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
280747, A62B 3502, B65H 7548
Patent
active
041356837
ABSTRACT:
A safety belt retractor comprises a housing containing first and second tandem spools for storing, respectively, lap and shoulder belts in helical wrap. Each of the spools is secured to a ratchet wheel engageable by a pawl located in the housing between the spools. Pawl support openings formed in opposite sidewalls of the housing enable the pawl to float while pivoting. In an equilibrium position, clearance between one end of the floating pawl and the first ratchet wheel is less than the clearance between the opposite end of the pawl and the second ratchet wheel. In response to acceleration of the vehicle carrying the retractor housing, a pendulum-type inertia device pivots the pawl from equilibrium into engagement with the first ratchet wheel. During pay out of the belts, with one end pivoting on the first ratchet wheel, the floating pawl is guided into contact with the second ratchet wheel by a cam surface defining one of the sidewall openings to positively lock the two spools. The pawl is supported by a plastic support member. The entire assembly is formed of interlocking parts.
REFERENCES:
patent: 3960339 (1976-06-01), Fisher
patent: 3974979 (1976-08-01), Fieni
patent: 4040576 (1977-08-01), Walker et al.
patent: 4065070 (1977-12-01), Pilarski et al.
Gavagan James
Loomba Yogendra S.
Stephenson Robert L.
Allied Chemical Corporation
Criss R. H.
Henry P. L.
Hornsby Harvey C.
Jillions John M.
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