Ratchet tap wrench

Details Ratchet tap wrench Ratchet tap wrench

1987-01-12

1989-01-24

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Tool or tool-support with torque-applying ratchet

Reversible ratchet

10141H, 74578, 81 632, 279 56, 408120, 408239R, 408240, B23G 506

Patent

active

047998326

ABSTRACT:
A compact tap wrench includes a ring-base, a pair of diametrically opposed handles, and a chuck mechanism friction-fit into the ring-base. A ratchet mechanism is built into one of the handles. The chuck mechanism includes interchangeable jaws for accommodating different ranges of tap sizes.

REFERENCES:
patent: 300771 (1884-06-01), Fray
patent: 309902 (1884-12-01), Watson
patent: 835727 (1906-11-01), Donnelly
patent: 869255 (1907-10-01), Myers
patent: 1119292 (1914-12-01), Lawson
patent: 1857012 (1932-05-01), Corley
patent: 2145762 (1939-01-01), Fox
patent: 3364510 (1968-01-01), Johnson
patent: 4308768 (1982-01-01), Wagner

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