Motor control circuit with vibration detector

Details Motor control circuit with vibration detector Motor control circuit with vibration detector

1988-03-21

1989-09-12

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Sound, supersonic vibration or mechanical vibration

318 39, B23Q 500

Patent

active

048663581

ABSTRACT:
A motor control circuit for a machine, such as a granulator, having an intake adapted to receive parts to be machined. The motor control circuit detects the introduction of parts into the machine intake and automatically activates the motor for a predetermined period of time. Thereafter, the motor control circuit detects the presence of a machining operation through a vibration or sound transducer. In the absence of an output from the vibration or sound transducer, indicative that the machining operation has been completed, the motor control circuit deactivates the motor.

REFERENCES:
patent: 2240822 (1941-05-01), Adams
patent: 2381505 (1945-08-01), Lindholm
patent: 2491466 (1949-12-01), Adams
patent: 2766939 (1956-10-01), Weston
patent: 3095532 (1963-06-01), Floyd
patent: 3223964 (1965-12-01), Stadlin
patent: 3305765 (1967-02-01), Rittner
patent: 3459378 (1969-08-01), Hill
patent: 3904857 (1975-09-01), Sandblom
patent: 4096424 (1976-06-01), Hysler
patent: 4137487 (1979-01-01), Niestroj et al.

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