Tension relieving mechanism

Details Tension relieving mechanism Tension relieving mechanism

1982-01-20

1984-06-05

Jillions, John M.

Land vehicles

Wheeled

Attachment

2421077, 280807, A62B 3502, B65H 7548

Patent

active

044524706

ABSTRACT:
A new and improved tension relieving mechanism is provided which may be easily controlled and which has few operating parts. The tension relieving mechanism utilizes a coiled spring for clutching a turnable member connected to the seat belt reel shaft. Members associated with the seat belt retractor provide camming and stopping surfaces to engage end portions of the clutch spring to alternately expand and allow contraction of the spring coil to release or grip a frictional surface of the turnable member. With the clutch spring abutting a stopping surface and urged by the reel spring in a belt retraction direction so that the natural contraction of the clutch spring on the frictional surface is encouraged, the reel shaft is locked against rotation in the belt retraction direction providing a release of tension on the belt. The grip of the clutch spring on the turnable member may be released with a minimal amount of force by urging the end portions of the clutch spring radially outward to enlarge the clutch spring coil.

REFERENCES:
patent: 2145474 (1939-01-01), Burdick et al.
patent: 2159004 (1939-05-01), Bosch
patent: 2209467 (1940-07-01), Moore
patent: 3323750 (1967-06-01), Worth et al.
patent: 4065072 (1977-12-01), Magyar
patent: 4361294 (1982-11-01), Doty

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