Magnetically operated actuator having plural permanent magnet me

Details Magnetically operated actuator having plural permanent magnet me Magnetically operated actuator having plural permanent magnet me

1987-08-07

1988-07-05

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 81, H01F 708

Patent

active

047557826

ABSTRACT:
A magnetically operated actuator comprises a support structure: a generally elongated operating element mounted on the support structure for selective displacement between first and second positions; at least one electromagnet assembly for driving the operating element to displace the latter between the first and second positions under the influence of magnetism emanating therefrom, which electromagnet assembly comprises a first magnetic member and a solenoid unit disposed around the first magnetic member and adapted to develop a magnetic field when electrically energized, with the first magnetic member being exposed in the magnetic field developed by the solenoid unit when the solenoid unit is electrically energized; and at least two second magnetic members cooperable with the first magnetic member. One of the first and second magnetic members is fixed to the support structure and the other of the first and second magnetic members is fixed to the operating element while the solenoid unit is fixed to the support structure.

REFERENCES:
patent: 4604599 (1986-08-01), Koehler
patent: 4609899 (1986-09-01), Koehler
Japanese Laid Open Patent Publication No. 59-199850.
Japanese Laid Open Patent Publication No. 61-237325.

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