Motors: expansible chamber type – Differential
Patent
1974-08-20
1976-05-25
Schwadron, Martin P.
Motors: expansible chamber type
Differential
92 131, 92 136, 92 138, 92 62, 92152, 251 31, F15B 1114
Patent
active
039584933
ABSTRACT:
An actuating device comprises a cylinder of hollow cylindrical form a plurality of pistons respectively of different operational strokes slidably fitted within the cylinder and undergoing sliding displacements in a mutually unitary manner in regions where their strokes overlap and in a separate manner in regions where their strokes differ under driving force due to a working fluid supplied into and discharged from the cylinder interior through ports provided in the cylinder, a working fluid system for supplying the working fluid and having at least one changeover valve for controlling the working fluid supply into and discharge from the cylinder, the piston of longest stroke among the pistons being a driving piston, and a driven shaft coupled to the driving piston thereby to be driven by the sliding displacement thereof. The driving piston undergoes sliding displacement in a noncontinuous manner in multiple stages, whereby the driven shaft is driven in multiple stages.
REFERENCES:
patent: 1145318 (1915-07-01), Kirchhofer
patent: 1910663 (1933-05-01), Abercrombie et al.
patent: 2652033 (1953-09-01), Shafer
patent: 2896413 (1959-07-01), Hussey
patent: 2940263 (1960-06-01), Cudnohufsky
patent: 2974637 (1961-03-01), Holmes et al.
patent: 3149537 (1964-09-01), Fink
patent: 3452961 (1969-07-01), Forsman
Fujita Tomomitsu
Imai Yoshiaki
Ohno Masaaki
Ohyagi Toshio
Schwadron Martin P.
Tokico Ltd.
Walton George L.
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