Ratchet wrench with positive locking capability

Details Ratchet wrench with positive locking capability Ratchet wrench with positive locking capability

1991-04-22

1992-02-11

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 631, B25B 1300

Patent

active

050866737

ABSTRACT:
The disclosure describes a ratchet type of tool drive that has three partitions extending from the walls of a cavity to define channels with a spindle. The walls are thinner at a midpoint of each channel and are thicker adjacent each partition by a limited amount, such as 30 thousandths of an inch. A roller is located within each of the channels with a coil spring on each side. A retainer cover has extensions between each partition and one end of each coil spring, so that turning the cover one way or the other, applies a biasing pressure on each roller to urge the rollers in a desired direction. The structure described has fewer parts, is thinner in configuration and the rollers move in a slight rolling movement to be pinched between the narrowing walls of each channel, to achieve a positive locking and non-slipping action.

REFERENCES:
patent: 1904621 (1933-04-01), Kounovsky
patent: 2139650 (1938-12-01), Anderson et al.
patent: 2469572 (1949-05-01), Pratt
patent: 3621739 (1971-11-01), Seablom
patent: 3823625 (1974-07-01), Myers
patent: 4669339 (1987-06-01), Cartwright

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