Motor pump

Details Motor pump Motor pump

1978-08-11

1980-07-15

Gluck, Richard E.

Pumps

Motor driven

Axial thrust balancing means for rotary pump and motor

417366, F04B 1702, F04B 3500

Patent

active

042126010

ABSTRACT:
A motor pump comprises a DC motor unit, a pump unit and a cover housing for the motor and pump unit; the motor unit includes a cup-shaped yoke with the bottom having a bearing, and a bearing holder is fitted into an opening in the cup-shaped yoke to thereby hold an armature shaft of the motor unit in position with respect to the yoke. The pump unit has a pump stator secured to the bottom of said cup-shaped yoke and a pump rotor connected to the armature shaft by key arrangement. The pump stator has a passage communicating the gap in the key arrangement and the pump inlet. As a result, fuel in the gap is prevented from stagnating therein, thereby preventing rusting of the pump components.

REFERENCES:
patent: 3754844 (1973-08-01), Nusser et al.
patent: 3836291 (1974-09-01), Bottcher et al.
patent: 3850550 (1974-11-01), Kaessen

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