Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1982-07-15
1985-01-29
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335263, 335273, H01F 708
Patent
active
044969210
ABSTRACT:
An adjustable electromagnetic actuator is disclosed which is operable to control the displacement of a movable workpiece member. Included in the actuator is a coil assembly including means defining a bore and an energizeable field coil which surrounds the bore. An armature assembly movable in the bore includes a plunger and an output assembly which is adapted to be connected to the workpiece. Means operatively associated with one of the output member or the plunger restrains rotational movement of said one with respect to the other. Included is an arrangement which connects the output assembly to the plunger for allowing the plunger and the output assembly to move conjointly along a given axis and for allowing relative rotation therebetween when said one cooperates with the restraining means and the other of the plunger or the output assembly is rotated such that they are displaced in relationship to each other along the given axis to thereby allow stroke regulation of the armature assembly.
REFERENCES:
patent: 1361935 (1920-12-01), Villiers
patent: 2333448 (1943-11-01), Seeley
patent: 2992304 (1961-07-01), Andrews
Harris George
Payne Leslie J.
Polaroid Corporation
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