Electric motor driven hydraulic apparatus with an integrated pum

Details Electric motor driven hydraulic apparatus with an integrated pum Electric motor driven hydraulic apparatus with an integrated pum

1991-11-04

1994-06-14

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

417203, 417357, 417542, F04B 3504

Patent

active

053205014

ABSTRACT:
An electric motor driven inline hydraulic apparatus comprising a housing having end members closing said housing, an electric motor stator mounted in said housing, an electric motor rotor, a shaft on which the rotor is mounted is journalled in the housing and a pump is integrally formed on one or both of the end members. The shaft extends through an opening in the end member and is connected to the rotating group of the pump. Hydraulic fluid is supplied to the interior of the electric motor housing and flows through passages in the housing to the intake of the pump integral with the end member. The end member associated with the pump is formed with an enlarged chamber adjacent the inlet of the pump which functions to reduce the flow velocity and separate the contained air from the hydraulic fluid thereby reducing the operating sound level of the pump.

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