Hydraulic cylinder utilizing corrugated running surfaces

Details Hydraulic cylinder utilizing corrugated running surfaces Hydraulic cylinder utilizing corrugated running surfaces

1976-02-18

1978-05-02

Schwadron, Martin P.

Motors: expansible chamber type

With motive fluid valve

92159, 92168, 92174, 92249, 308 4R, F16J 1518

Patent

active

040868443

ABSTRACT:
The piston of a hydraulic cylinder is provided with a corrugated running surface composed of angularly disposed ribs and valleys therebetween, the ribs bearing against the relatively smooth bore of the tubular casing in which the piston reciprocates. Whereas the ribs on the piston provide a corrugated running surface bearing against the bore, the cylinder head, in which the piston rod is journaled, is formed with a similarly corrugated running surface.

REFERENCES:
patent: 1313905 (1919-08-01), Mummert
patent: 1360498 (1920-11-01), Chandlee
patent: 1877530 (1932-09-01), Read
patent: 2291243 (1942-07-01), Levy
patent: 2638124 (1953-05-01), Nickerson
patent: 2837384 (1958-06-01), Johnson
patent: 3521531 (1970-07-01), Kaesemodel
patent: 3544118 (1970-12-01), Klein
patent: 3603213 (1971-09-01), Tootle
patent: 3631766 (1972-01-01), Kraakman
patent: 3659504 (1972-05-01), Zurcher
patent: 3781022 (1973-12-01), Kumabe

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