Electric actuators
AssigneeWestinghouse Brake & Signal Co. Ltd.
InventorsJack Washbourn, Howard F. Cogan
Life of this patent
Estimating the term…
Abstract
An electric actuator which comprises an electric motor operable to a varying degree correspondingly to cause a spring to generate on an output member an output force which varies in accordance with the varying degree of operation of the electric motor.
Claims15
An electric actuator comprising an output member movable from a first position to a second, force exerting position, spring means for exerting a variable force on said output member for transmission by said output member, when the output member is in the force exerting position thereof, a variable output electric motor for varying the variable force exerted by said spring means on said output member in accordance with the output of the electric motor.
Dependencies are inferred from the claim text.