Tools – Wrench – screwdriver – or driver therefor
Patent
1975-08-06
1976-06-22
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
B25D 23142, B25D 23145, B25D 23147
Patent
active
039643514
ABSTRACT:
A preset type torque wrench, in which another link is arranged in series to an ordinary toggle link between a head and a thruster, so that after the toggle link is actuated, said another link is further actuated, where by the head continues to turn at a large angle relatively to a grip part.
Thus, the generation of any excessive torque can be prevented.
REFERENCES:
patent: 3018677 (1962-01-01), Mutolo et al.
patent: 3132548 (1964-05-01), Livermont
patent: 3355970 (1967-12-01), Knudsen et al.
Jones Jr. James L.
Tonichi Manufacturing Co., Ltd.
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