Damping in electric clock

Details Damping in electric clock Damping in electric clock

1975-04-30

1976-08-31

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310191, 310209, 58 23D, H02K 702

Patent

active

039783553

ABSTRACT:
A damping chamber in an electric clock is provided with a closure surface which conforms to a closure surface on the shaft of the electric motor which drives the clock. The permanent-magnet rotor of the motor is displaced from the stator in a direction away from the damping chamber so that, when the stator is driven, it will generate a force component on the rotor which will force the shaft to increase the pressure on the closure surfaces, thereby improving the seal of the damping chamber when the motor is operated.

REFERENCES:
patent: 1283433 (1918-10-01), Warren

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