Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1983-05-18
1985-06-25
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
74 8915, 173170, B25B 1346
Patent
active
045246505
ABSTRACT:
A two-part tool assembly comprising a squeeze wrench section and a ratchet wrench section adapted to be fitted into one another. The squeeze wrench section serves to convert squeezing motion into rotary motion on a variable torque basis, and the ratchet wrench section transmits the rotary motion to the screw or bolt which is being tightened or loosened. In one embodiment, a curved lever is included in the squeeze wrench section in conjunction with a handle to provide a traveling fulcrum, so that when the handle is squeezed maximum torque is generated at the beginning of the stroke and maximum speed is realized at the end of the stroke. In a second embodiment, the variable torque is provided by changing the angle of spiral cuts along a drive shaft in the squeeze wrench section, so that the spiral cuts become more axial towards the front end of the section, and by directly coupling a slider on the shaft to the squeeze handle. The squeeze wrench section and the ratchet wrench section are also adaptable to be used separately and independently of one another.
REFERENCES:
patent: 2301413 (1942-11-01), Kilcup
patent: 2421901 (1947-06-01), Murad et al.
patent: 2594669 (1952-04-01), Marshall
patent: 2718165 (1955-09-01), Bourassa et al.
patent: 3049018 (1962-08-01), Lusskin et al.
patent: 3733936 (1973-05-01), Flynn
patent: 4249617 (1981-02-01), Cox
Beecher Keith D.
Jones Jr. James L.
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