In-tank type motor-operated pump

Details In-tank type motor-operated pump In-tank type motor-operated pump

1990-06-14

1991-08-20

Smith, Leonard E.

Pumps

Motor driven

Electric or magnetic motor

417366, 123509, 310 90, 310237, 384277, F04B 3900

Patent

active

050409549

ABSTRACT:
In an in-tank type motor-operated pump having a brush motor (1), a bearing (15) for rotatably holding a rotor shaft (5) is covered with a heat resistant insulating material (25) and is mounted in a bracket (22) in which brushes (4) are slidably held, thereby preventing an accidental shortcircuit between brushes (4) via the bearing (15) at the time when the bracket (22) melts with heat.

REFERENCES:
patent: 4109978 (1978-08-01), Ernst et al.
patent: 4320931 (1982-03-01), Shaffer
patent: 4447192 (1984-05-01), Tuckey
patent: 4508492 (1985-04-01), Kusakawa et al.
patent: 4741677 (1988-05-01), Frigo
patent: 4789308 (1988-12-01), Tuckey
patent: 4871301 (1989-10-01), Buse

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