Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1989-10-16
1991-06-04
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
811775, 811772, B25B 1300
Patent
active
050203975
ABSTRACT:
Disclosed is a wrench for which nuts and the like comprise a hub having a bore therethrough with first handle defined by or associated with the hub for providing torque to the hub. A rotatable shaft has a portion within the bore with fastener drive means connected to one end of the shaft and second handle means connected to the other end thereof. The shaft and hub have complementary engaging socket elements whereby the shaft may be selectively engaged to the hub for rotation therewith by the first handle to develop a first torque or disengaged from the hub for rotation relative to the hub by the second handle to develop a lesser second torque. There is a flange between the complementary engaging socket elements and a socket element to which a nut wrench socket is detachably connected. A plastic shield surrounds the hub and it has a skirt with detent protrusions which cooperate with the flange to positively locate the shaft relative to the hub during use. Further there is an auxiliary handle which is adapted to detachably cooperate with a stub on the hub in order to provide a dual handle operation for developing the first torque leverage.
REFERENCES:
patent: 151315 (1874-05-01), Rowe
patent: 2382291 (1945-08-01), Carlberg
patent: 2592978 (1952-04-01), Trimboli
patent: 2621688 (1952-12-01), Wales
patent: 2641291 (1953-06-01), Yess
patent: 3572188 (1971-03-01), Christian
patent: 3813967 (1974-06-01), DeHaven
patent: 4691599 (1987-09-01), Schultz
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