Miniature motor having coated rubber permanent magnet

Details Miniature motor having coated rubber permanent magnet Miniature motor having coated rubber permanent magnet

1988-02-26

1989-04-18

Shoop, Jr., William M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, H02K 1512

Patent

active

048230332

ABSTRACT:
A miniature motor using a rubber magnet for the permanent magnet for creating a field, in which a coating film is formed on the rubber magnet.
The coating film is gas-impermeable, possibly of suitable synthetic resin, to prevent any harmful gas generated in the rubber magnet from escaping therefrom and damaging the contact surfaces of the motor.

REFERENCES:
patent: 3173044 (1965-03-01), Pittman Jr.
patent: 3818586 (1974-06-01), Harkness et al.
patent: 3891879 (1975-06-01), Tamada et al.
patent: 3938914 (1976-02-01), Zimmermann
patent: 4173822 (1979-11-01), Futterer et al.
patent: 4482829 (1984-11-01), Tardien et al.
patent: 4587450 (1986-05-01), Ozaki
patent: 4710659 (1987-12-01), Takano et al.

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