Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1985-06-13
1988-08-23
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 582, B25B 1346
Patent
active
047652101
ABSTRACT:
The nut-runner has a power arm and a reaction arm constructed preferably as a casing, each of which is guided in a first end region so as to be pivotable opposite the other about a common axis. It has a clamp wheel with gearing mounted in a drilled hole in the first end region of the power arm so as to be rotatable about the axis, and a catch mounted on the power arm and interacting with this clamp wheel, said catch being in the engaged position when the power arm pivots in one direction, in which said catch engages with the teeth of the clamp wheel and slips over the teeth of the clamp wheel when the power arm pivots in the other direction. The nut-runner also has a hydraulic power cylinder consisting of a cylinder and a piston and acting between the two arms in the vicinity of their other end regions. The reaction arm encompasses the clamp wheel through a maximum of 180 degrees. The arm engage each other by way of a circular guide positioned concentrically relative to the axis, extending through a maximum of 180 degrees, and consisting of a guide groove and a projection, said guide being positioned between the axis and the second end region of the arms.
REFERENCES:
patent: 2636411 (1953-04-01), Wood
patent: 2660910 (1953-12-01), Sellers
patent: 4339968 (1982-07-01), Krieger
patent: 4368655 (1983-01-01), Junkers
patent: 4440046 (1984-04-01), Hirtsiefer et al.
Blockisch Olaf
Frohn Gustav
Mierbach Hans-Bernd
Applied Power Inc.
Byrne John J.
Kile Bradford E.
Rachuba Maurina
Schmidt Frederick R.
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