Pumps – Expansible chamber type – Moving cylinder
Patent
1984-05-03
1985-11-26
Freeh, William L.
Pumps
Expansible chamber type
Moving cylinder
92240, 92247, 92248, 91488, F04B 1920, F04B 2900, F16J 900
Patent
active
045552231
ABSTRACT:
In a radial piston machine, there is provided an outer stator and an inner rotor rotatable on a control pintle provided with supply and discharge channels. The rotor contains at least one radial bore in which is slidable a spherical piston comprising an outer ball and an inner cylindrical sleeve. The radially inward end of the sleeve, which end is adapted to be acted upon by the outlet pressure of the machine, includes a sealing lip which, during operation, in particular at higher pressures, expands circumferentially and, under certain circumstances, moves in sealing abutment with the inner wall of the radial bore.
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Budecker Ludwig
Obersteiner Georg
Freeh William L.
IT&T Industries, Inc.
Michals William J.
Raden James B.
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