Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Separate motive fluid control for each working chamber
Patent
1980-07-30
1983-08-16
Freeh, William L.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Separate motive fluid control for each working chamber
91492, 91497, F01B 106
Patent
active
043984509
ABSTRACT:
A hydraulic motor with two sets of cylinders, the diameters of the two cylinder sets being of different dimension in order to produce three speed ranges. The pressure medium is directed to either both cylinder sets, the cylinder set of larger diameter of the cylinder set of smaller diameter by means of a valve structure comprising sliding spindles arranged in the hollow center axle of the motor, the pressure force of the pressure medium being utilized for moving the valve spindles.
REFERENCES:
patent: 1998004 (1935-04-01), Ernst
patent: 2163080 (1939-06-01), Benedek
patent: 3863447 (1975-02-01), Foster et al.
patent: 4326450 (1982-04-01), Bacquie
Freeh William L.
Oy Partek Ab
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