Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1974-10-10
1976-03-09
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5731, B25B 1700
Patent
active
039423980
ABSTRACT:
A gear head wrench particularly suited for use in applying torque to bolts without transferring torsional stresses to bolt-receiving structures. The wrench is characterized by a coupling including a socket, for connecting a bolt head with a torque multiplying gear-train, provided within a housing having an annulus concentrically related to the socket and adapted to be coupled with a spacer interposed between the bolt head and the juxtaposed surface of the bolt-receiving structure for applying a balancing counter-torque to the spacer as torque is applied to the bolt head whereby the bolt-receiving structure is substantially isolated from torsional stress. As a result of the foregoing, the operator of the wrench is substantially isolated from any forces which may be imposed.
REFERENCES:
patent: 1405739 (1922-02-01), Ratz
patent: 3247741 (1966-04-01), Batten
patent: 3331269 (1967-07-01), Sauter
patent: 3604292 (1971-09-01), Sada
patent: 3759119 (1973-09-01), Wing
Fletcher James C. Administrator of the National Aeronautics and Space
McDougal Allan R.
Norman Robert M.
Grifka Wilfred
Jones Jr. James L.
Manning John R.
Mott Monte F.
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