Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1976-04-26
1977-05-31
Mautz, George F.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421074R, A62B 3502, B65H 7548
Patent
active
040264947
ABSTRACT:
A safety belt retractor has a belt storage reel biased toward a belt wound condition, an emergency locking means for preventing a further unwinding movement of the belt when it is unwound to a position of use and an emergency condition exists and an improvement in belt tension reducing means for reducing the tension of the belt when in use due to the rewinding bias of the reel. The improved belt tension reducing means includes counterbiasing spring means for biasing the reel in a belt unwinding direction when connected thereto and means for releasably connecting the counterbiasing means and the reel in response to belt movement during protraction and retraction. Ratchet means connected to the reel are adapted to be engaged by pawl means pivotally mounted on a pawl carrier means which is in turn rotatably mounted to the retractor and biased counter to the reel bias by the counterbiasing spring. Frictionally driven camming disc means are provided for deactivating the pawl means to prevent the connection between the counterbiasing spring and reel through the pawl carrier, pawl means and ratchet means until there is a slight retraction movement of the webbing following a protraction thereof toward a position of use.
REFERENCES:
patent: 3834646 (1974-09-01), Heath
patent: 3880364 (1975-04-01), Andres
patent: 3957222 (1976-05-01), Bladh
patent: 3957283 (1976-05-01), Pocobello
American Safety Equipment Corporation
Jillions John M.
Mautz George F.
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