Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1992-07-31
1994-07-19
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 62, B25B 1346
Patent
active
053298330
ABSTRACT:
The invention presented relates to an apparatus for applying rotational force to a workpiece. In general, this inventive apparatus includes a cylindrical driving member which has an opening sized to engage a workpiece on which rotational force is to be applied; a first outer cylindrical member disposed concentrically about the driving member and in a ratcheting relationship thereto, such that rotation of said first outer cylindrical member in a first direction will cause the driving member to rotate in the first direction, and rotation of the first outer cylindrical member in a second direction will not cause the driving member to rotate in the second direction; and a second outer cylindrical member disposed concentrically about the driving member and in a ratcheting relationship thereto such that rotation of the second outer cylindrical member in a first direction will cause rotation of the driving member in the first rotation and rotation of the second outer cylindrical member in a second direction will not cause rotation of the driving member in the second direction. The first and said second outer cylindrical members can be drivingly rotated in either of a first or a second direction in series to apply relatively continuous rotational force to the driving member or in parallel to apply intermittent yet higher powered force to the driving member.
REFERENCES:
patent: 2729997 (1956-01-01), Davis
patent: 2890612 (1959-06-01), Sergan
patent: 2961904 (1960-11-01), Sergan
patent: 3372611 (1968-03-01), Amanti et al.
patent: 3604292 (1971-09-01), Sada
patent: 3686983 (1972-08-01), Flagge
patent: 3759119 (1973-09-01), Wing
patent: 5005447 (1991-04-01), Junkers
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