Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1976-07-23
1977-08-02
Mack, John H.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204243R, 204245, C25D 1700, C25C 306, C25C 312
Patent
active
040394190
ABSTRACT:
A positioning device is disclosed comprising a jack screw having a stationary guide housing, an externally helically threaded shaft through the housing and a retainer threadably engaged onto the shaft, and a rotatable ratchet having a head mounted on a top portion of the shaft. The positioning device further comprises at least one fluid cylinder and a piston fitting inside a mating chamber in the cylinder, a piston rod extending from the piston and connected to the ratchet and means for reciprocally driving the piston in the chamber. Each stroke of the piston and attached piston rod displaces the ratchet arm rotating the ratchet head and the shaft connected thereto, thereby displacing the retainer along the shaft.
REFERENCES:
patent: 3459057 (1959-08-01), Bonneric
patent: 3512421 (1970-05-01), Anderson
patent: 3761379 (1973-09-01), Elliott
patent: 3797324 (1974-03-01), Sheesley et al.
Aluminum Company of America
Mack John H.
O'Rourke, Jr. William J.
Valentine D. R.
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