Ratchet wrench

Details Ratchet wrench Ratchet wrench

1997-10-16

1999-10-05

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 60, B25B 1346

Patent

active

059606800

ABSTRACT:
A ratchet wrench is provided that includes a link control structure in which the control rod slides smoothly in the D-head to control the ball that locks the joint with a socket or releases the joint. A new bolting joint structure between the D-head and the reversing disc is provided that consists of a straight segment at the front portion, as a guiding section, and a conic segment at the back portion, as a securing section of the threaded trunk, so that the bolt can be located at any desired position for adjustment, without the possibility of loosening. The reversing disc has a curved circular groove formed in the top surface thereof that conforms to human engineering principles.

REFERENCES:
patent: 3783703 (1974-01-01), Trimble et al.
patent: 5012705 (1991-05-01), Chow

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