Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1997-07-03
1999-08-03
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Machine
811801, 811771, B25B 1300
Patent
active
059310600
ABSTRACT:
A collar attachment, which allows vertically suspended automatic screw drives to be operated more ergonomically is disclosed. The collar attachment eliminates the need for the operator to firmly grasp the screw drive in order to draw the screw drive down on a screw, thereby reducing hand and forearm fatigue. The collar attachment provides a horizontal annular platform extending radially from the screw drive upon which an operator's hand can rest naturally. With the operator's hand only loosely wrapped around the casing and rested upon the collar attachment, the operator can apply downward force to the collar attachment to draw the screw drive downward without firmly grasping the drive casing. The collar attachment includes two planar semi-circular half sections, which clamp radially around the cylindrical casing of the screw drive. The half sections are connected together around the screw drive by two bolts, which pass through parallel bores in one section and turn into aligned threaded bores in the other section.
REFERENCES:
patent: 2064740 (1936-03-01), Brandt
patent: 3320835 (1967-05-01), Flory et al.
patent: 4523498 (1985-06-01), Chapman
Crump R. Tracy
Smith James G.
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