Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Patent
1987-09-28
1989-05-02
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
811775, 811771, B25B 1300
Patent
active
048257338
ABSTRACT:
This invention relates to wrenches, specifically to wrenches commonly known as socket wrenches, and it comprises an improved versatile wrench handle and shaft to be used in conjunction with standard removable sockets and ratchets for speedily and conveniently loosening or tightening nuts or bolts by itself or with the application of other wrenches as needed, each operated by the same person or with the assistance of one or more persons. The invention comprises a `D`-shaped handle with provisions made for applying torque to the wrench handle by various means, the selection of which means is dependent upon the means most appropriate and convenient for the task to be performed.
REFERENCES:
patent: 1095851 (1914-05-01), Grafton
patent: 1177604 (1916-04-01), Cowell
patent: 1578114 (1926-03-01), Fegley
Bergquist Donald A.
Cruz Lawrence
Schmidt Frederick R.
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