Implements or apparatus for applying pushing or pulling force – Fluid pressure – Vehicle attached
Patent
1978-11-03
1981-06-02
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Fluid pressure
Vehicle attached
B66F 324
Patent
active
042707331
ABSTRACT:
A cable racking system for bending and holding in place large wires or cables which includes a jack having a double-acting hydraulic cylinder and three-way control valve means mounted on the cylinder to supply hydraulic fluid in one mode to extend or retract a piston rod mounted cable seat with precise control and in a another mode to hold pressure on the hydraulic cylinder so as to maintain any desired condition of piston rod extension.
REFERENCES:
patent: 2200133 (1940-05-01), Mandl
patent: 2483239 (1949-09-01), Sharpe
patent: 3054596 (1962-09-01), Carr
patent: 3062502 (1962-11-01), Pelletier
patent: 3084909 (1963-04-01), Carr
patent: 3330602 (1967-07-01), Riley et al.
patent: 3345039 (1967-10-01), Gray
patent: 3891182 (1975-06-01), Bearden
Hydraulic Energy Company
Watson Robert C.
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