Torque motor with hydraulic potentiometer for servo-distributor

Details Torque motor with hydraulic potentiometer for servo-distributor Torque motor with hydraulic potentiometer for servo-distributor

1988-04-26

1989-01-03

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

335181, 13762564, G05D 1600

Patent

active

047949414

ABSTRACT:
A torque motor (M) for the hydraulic potentiometer (P) of a servo-distributor intended in particular for the control of jacks and hydraulic motors, comprising magnets fixed to fixed members (1, 2) in which an armature (3) is arranged whose ends are separated from the fixed members (1, 2) by air-gaps (y) and around which armature are mounted two induction coils (4, 5) which are capable of being supplied with electrical current, and a blade (12) which is fixed by one of its ends to a flexion tube (9) which is connected to the armature (3) by its corresponding end. There are four parallelepipedal or cylindrical magnets (23, 24, 25, 26), which are made of a suitable alloy with a strong coercive field, one pair of which is placed at each end of the armature (3). These magnets are easier to manufacture, to machine and to fix in the motor than conventional magnets and at the same time have a much higher coercive field.

REFERENCES:
patent: 3156798 (1904-11-01), Rights
patent: 3712339 (1973-11-01), Bartholmaus

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