Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1985-03-29
1986-10-28
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
B25B 1346
Patent
active
046191607
ABSTRACT:
The piston-cylinder unit (30') of a power wrench presses against the arm (16), by means of a ball and socket joint (44, 45), for swivelling the ring (11), which is connected secure against rotation to the wrench head to be turned. The piston (35) and the arm (16) have complementary spherical surfaces (40, 41) which press against each other. The dimensions of the spherical surfaces can be selected in dependence on the maximum power to be transmitted. The result is a uniform power distribution and a force-free adaptation of the movements of piston (35) and arm (16), without jamming and tilting.
REFERENCES:
patent: 4027561 (1977-06-01), Junkers
patent: 4200011 (1980-04-01), Wilmeth
patent: 4440046 (1984-04-01), Hirtsiefer et al.
patent: 4524651 (1985-06-01), Dabiel et al.
Jones Jr. James L.
Wagner Paul-Heinz
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