Variable stroke fluid cylinder

Details Variable stroke fluid cylinder Variable stroke fluid cylinder

1974-11-20

1976-07-06

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

Exhaust control

91468, 92161, 92165R, F15B 13042, F15B 1524

Patent

active

039675394

ABSTRACT:
An adjustable stroke length fluid cylinder used to move agricultural or industrial machinery is disclosed. The cylinder is an enclosed unit having a movable piston therein which is attached to an axial piston rod secured to the load. A fluid valve directs the application of pressure fluid to either side of the piston to extend or retract the piston rod. One end of the cylinder houses a head unit containing an internal valve which is operated by a stop member positioned on the piston rod. The internal valve is effective to stop retraction of the piston rod when actuated by the stop member by blocking fluid flow through the cylinder. Subsequent extension of the piston rod automatically returns the internal valve to its open position.

REFERENCES:
patent: 2587182 (1952-02-01), Livers
patent: 2606414 (1952-08-01), Dyrr
patent: 2606532 (1952-08-01), Ziskal
patent: 3667347 (1972-06-01), Patrick

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