Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Diverse paths used to control extent of working member travel
Patent
1975-06-06
1977-03-29
Maslousky, Paul E.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Diverse paths used to control extent of working member travel
91 20, 91357, 91409, 91417R, 91445, 91390, F15B 1517, F15B 902
Patent
active
040142485
ABSTRACT:
Step by step controlled servomechanism of the cylinder-type comprising a drive element movable in a case which it divides into two chambers and provided with a plurality of receiver ports, a distributor adapted to be put in communication with the high pressure and the low pressure and to supply said receiver ports, wherein said distributor is fixed and provided with a number of supply or transmitter ports at least equal to three but independent of the number of receiver ports, the transmitter ports being capable of being connected by permutation, in succession and in pairs, respectively to the low pressure and to the high pressure, the distance between the receiver ports and their length, on the one hand, the distance between the transmitter ports and their length, on the other hand, being such that, by the step by step displacement in one direction of the drive element, on one hand, it is possible to bring each time at least one receiver port between the two transmitter ports of a pair in such position that it communicates neither with one nor with the other of the transmitter ports but that any displacement in one direction or the other of the drive element puts in communication at least one receiver port respectively with one or the other of the two transmitter ports and, on the other hand, one of the transmitter ports of a following pair to be supplied with fluid communicates with a receiver port.
REFERENCES:
patent: 2244296 (1941-06-01), Heinrich et al.
patent: 2954755 (1960-10-01), Pecchenino
patent: 3411413 (1968-11-01), MacNeill
patent: 3732027 (1973-05-01), Lupke
D.B.A.
Maslousky Paul E.
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