Safety belt retractor with dual sensitive, commonly mounted, act

Details Safety belt retractor with dual sensitive, commonly mounted, act Safety belt retractor with dual sensitive, commonly mounted, act

1974-01-17

1976-12-28

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

2421074B, A62B 3500, B65H 7548

Patent

active

039997227

ABSTRACT:
The safety belt retractor of this invention has a belt-sensitive mechanism and a vehicle-sensitive mechanism, both mounted on an actuating mechanism. The actuating mechanism includes a mounting plate slidably mounted on the reel shaft for limited rotation and a flywheel having ratchet teeth. The vehicle-sensitive mechanism includes a pendulum assembly and an actuating pawl. When the pendulum assembly oscillates, it lifts the actuating pawl which engages the ratchet flywheel, causing the mounting plate to rotate and actuate a locking pawl. The belt-sensitive mechanism includes a pinion gear and a spur gear which is driven by the reel shaft. When withdrawal of the safety belt exceeds a predetermined level of acceleration, the flywheel lags in rotation and causes the pinion gear to move along an arc of the spur gear, causing the mounting plate to rotate and actuate the locking pawl. Rotation of the ratchet flywheel may be synchronized with rotation of a ratchet locking wheel to facilitate immediate engagement of the locking pawl with the ratchet locking wheel.

REFERENCES:
patent: 3180456 (1965-04-01), Whittingham
patent: 3521832 (1970-07-01), Rex
patent: 3552676 (1971-01-01), Weber
patent: 3741496 (1973-06-01), Beller
patent: 3754722 (1973-08-01), Nohren
patent: 3802642 (1974-04-01), Klink
patent: 3819126 (1974-06-01), Stoffel
patent: 3858824 (1975-01-01), Stephenson

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