Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1973-04-20
1976-03-16
McCarthy, Edward J.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
B65h 7548
Patent
active
039441628
ABSTRACT:
A reel on which seat belts are stored about a rotatable shaft. The reel includes spring means for retracting the belt and a ratchet tooth gear fixed for rotation with the shaft. Upon rapid unreeling of the belt off of the shaft, means which may be inertia responsive activates a pair of lockbars to engage the ratchet tooth gear and stop its rotation. Each lockbar includes a pawl tip and when one of the pawl tips is radially aligned with one of the tooth tips on the gear, the other of the pawl tips is aligned midway between a pair of adjacent gear teeth. When the lockbars are moved into engagement with the ratchet tooth gear, the combination of the two pawl tips and their orientation with respect to the teeth of the gear assures that at least one of the tips will be in proper position to engage the tooth gear should the other tip break off or not engage upon contact with the gear. Differential lever means may be provided for moving the pawl tips into engagement with the gear. This latter means thus forces one of the pawl tips into engagement with the gear should a first pawl tip slip or otherwise not engage.
REFERENCES:
patent: 1075311 (1913-10-01), Beck
patent: 2923492 (1960-02-01), Walpole et al.
patent: 3226053 (1965-12-01), Petty
patent: 3240510 (1966-03-01), Spouge
patent: 3332720 (1967-07-01), Hansen
patent: 3489367 (1970-01-01), Kovacs et al.
patent: 3787002 (1974-01-01), Hayashi et al.
American Safety Equipment Corporation
McCarthy Edward J.
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