Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1987-11-18
1989-02-28
Salce, Patrick P.
Electrical generator or motor structure
Dynamoelectric
Rotary
192 84PM, 310103, H02K 4910, F16D 700
Patent
active
048088692
ABSTRACT:
A motor with an integral magnetic torque limiting coupling which maintains the relative positions of the motor rotor and a coupling output shaft thereof when the rotor is rotated, and transmits up to a predetermined amount of torque during such rotation, which exceeds the maximum sustained torque which the motor develops during normal operation so as not to interfere with the torque transmission during normal operation of the motor while allowing the output shaft and rotor to slip relative to one another to prevent transmitting a torque above a maximum safe torque which may be safely applied to a gear train to be driven by the motor, thereby preventing damage to the gear train by the motor in the event of a sudden change of speed of the gear train. The rotor of the motor is rotatably supported by bearings in the motor on journal extensions located beyond the ends of the rotor, so as to enable the magnetic coupling to have a length comparable to that of the rotor, in order to readily attain the necessary magnetic strength of the coupling.
REFERENCES:
patent: 3320448 (1964-02-01), Turk
patent: 4237703 (1980-12-01), Wahl, Jr.
patent: 4381466 (1983-04-01), Laenens
patent: 4486176 (1984-12-01), Tardieu et al.
patent: 4588913 (1986-05-01), Adami
Rebsch D. L.
Salce Patrick P.
Sundstrand Corp.
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