Construction for pump/motor devices

1,046,990. Hydraulic reciprocating motors and pumps. AMERICAN BRAKE SHOE CO. Oct. 8, 1965 [Dec. 14, 1964], No. 42862/65. Heading F1A. In a pump or motor device having a rotary cylinder block engaging a valve plate, e.g. coupled to an electric motor/generator unit so as to be driven by the unit as a...

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Bibliographic Details
Main Author KOUNS HERBERT H
Format Patent
LanguageEnglish
Published 08.11.1966
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENTTYPE, e.g. STEAM ENGINES
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:1,046,990. Hydraulic reciprocating motors and pumps. AMERICAN BRAKE SHOE CO. Oct. 8, 1965 [Dec. 14, 1964], No. 42862/65. Heading F1A. In a pump or motor device having a rotary cylinder block engaging a valve plate, e.g. coupled to an electric motor/generator unit so as to be driven by the unit as a pump or drive the unit as a motor, a vent port 51 is provided between inlet port 41 and outlet 42 and is connected to the outlet port 42 via a valve 52 responsive to the inlet port pressure, so that the vent port is open when the device is operating as a motor, thereby preventing cylinder "precompression". When the device operates as a pump, valve 52 is biased closed by spring 63 so that "precompression" occurs in each cylinder before it communicates with the outlet port.
Bibliography:Application Number: US19640418095