Hydraulically-operated devices

Details Hydraulically-operated devices Hydraulically-operated devices

1974-11-27

1977-05-03

Maslousky, Paul E.

Motors: expansible chamber type

Cyclically operable

Working member controlled motive fluid for distributor motor

91300, 91319, 91321, 92 85B, 92 86, F01L 2506, F01B 718, F01B 1102

Patent

active

040207471

ABSTRACT:
A hydraulically-operated reciprocatory device such as a road-breaking hammer includes piston means having an enlarged area portion which enters an overtravel-damping dashpot cavity. The dashpot cavity is in a chamber connected in series with valve means controlling the flow of hydraulic fluid such that said fluid flow through the chamber removes heat generated during a damping action.

REFERENCES:
patent: 1262170 (1972-02-01), Westinghouse
patent: 3303756 (1967-02-01), Geeson
patent: 3596562 (1971-08-01), Foster
patent: 3636707 (1972-01-01), Saari
patent: 3800662 (1974-04-01), Ackley
patent: 3887019 (1975-06-01), Reynolds et al.

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