Reversible ratchet mechanism

Details Reversible ratchet mechanism Reversible ratchet mechanism

1996-03-29

1997-11-18

Pitts, Andrea L.

192 clutches and power-stop control

Clutches

Automatic

81 631, F16D 4116, B25B 1346

Patent

active

056878206

ABSTRACT:
A ratchet mechanism includes a block secured in a handle and having a bore for receiving a rod and having two channels for receiving two pawls. The block has two projections extended inward of a slot. A sleeve is secured on the rod and includes a gear for engaging with the pawls. A disc includes an extension for disengaging either of the pawls from the gear so as to control the active directions of the ratchet mechanism. An arm has two legs engaged with the disc and engaged in the slot and engaged with the projections so as to retain the disc relative to the block at three positions.

REFERENCES:
patent: 4777852 (1988-10-01), Herman et al.
patent: 5570616 (1996-11-01), Thompson et al.
patent: 5582081 (1996-12-01), Lin
patent: 5609078 (1997-03-01), Yang

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