Open end ratchet type wrench

Details Open end ratchet type wrench Open end ratchet type wrench

1987-08-31

1989-12-26

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

81186, B25B 1304

Patent

active

048890200

ABSTRACT:
An open end wrench for use with a nut allows ratcheting of the wrench without removing the wrench from the nut. The wrench has fixed upper and lower jaw portions. An upper primary drive face and an upper secondary drive surface are located on the upper jaw portions. A lower primary drive face and a lower secondary drive face are located on the lower jaw portions. A rear stop face is located at the junction of the upper and lower jaw portions. Clearances are provided in the upper and lower jaws to enable the wrench to be rotated relative to the nut either approximately 30 degrees from a primary to a secondary drive position, or 60 degrees from primary to primary drive positions.

REFERENCES:
patent: 2618996 (1952-11-01), Logan
patent: 2652735 (1953-09-01), Wilder
patent: 2685219 (1954-08-01), Diebold
patent: 2730000 (1956-01-01), Crittenden, Jr.
patent: 2937551 (1960-05-01), Akers
patent: 3059513 (1962-10-01), Ness
patent: 3745859 (1973-07-01), Evans et al.
patent: 3757614 (1973-09-01), Evans et al.
patent: 3762244 (1973-10-01), Evans
patent: 3868873 (1975-03-01), Evans
patent: 3881377 (1975-05-01), Evans et al.
patent: 3921474 (1975-11-01), Dyck et al.
Photos of Quali-Kraft Wrench.

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