Spray-resistant electric motor

Details Spray-resistant electric motor Spray-resistant electric motor

1989-10-05

1990-07-03

Wong, Peter S.

Electrical generator or motor structure

Dynamoelectric

Rotary

248901, 310 77, H02K 510

Patent

active

049393979

ABSTRACT:
A spray-resistant water shield is formed for an electric motor by a water shield of a plastics or elastomeric material. This water shield has a conical edge with a periphery which seals against the exterior surface of an end shield, as part of the frame of the motor. A spring in the motor urges the rotor to a position of displacement relative to the stator during de-energization of the motor so that the water spray seal is effected. When the motor is energized, the rotor tends to align with the stator and the water shield moves away from its sealed condition with the motor frame to establish normal running conditions of the motor.

REFERENCES:
patent: 1501497 (1921-03-01), Schwarz
patent: 1771281 (1927-07-01), Wilsing
patent: 2172440 (1936-11-01), Edmondson
patent: 2488122 (1943-02-01), Griffith
patent: 2694781 (1954-11-01), Hinz
patent: 4059339 (1977-11-01), Brown
patent: 4287662 (1981-09-01), Otto
patent: 4535262 (1985-08-01), Newberg
patent: 4689511 (1987-08-01), Baker et al.
patent: 4827166 (1989-05-01), Morrill

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