Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1986-09-30
1988-06-28
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5744, B25B 1346
Patent
active
047531398
ABSTRACT:
A fluid-operated wrench has a reciprocable driving element having a driving end, and a lever arm element pivotable about an axis and having a connecting end pivotably connected with the reciprocable driving element by means of opening provided in the one end of one of the elements and having one straight side, and a sliding member having a side which slides over the straight side of the opening and being pivotably connected with the other element.
REFERENCES:
patent: 3745858 (1973-07-01), Biach
patent: 4200011 (1980-04-01), Wilmeth
patent: 4201099 (1980-05-01), Junkers
patent: 4387611 (1983-06-01), Junkers
patent: 4406185 (1983-09-01), Junkers
patent: 4446762 (1984-05-01), Junkers
patent: 4480510 (1984-11-01), Aparicio Jr. et al.
Hartman Judy J.
Schmidt Frederick R.
Striker Michael J.
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