Shock and vibration resistant magnetically operated actuator

Details Shock and vibration resistant magnetically operated actuator Shock and vibration resistant magnetically operated actuator

1986-06-16

1988-03-08

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335100, 335225, H01F 708, H01F 714

Patent

active

047301775

ABSTRACT:
A set of magnetically responsive vanes are secured for rotation about their mass center of gravity in a given angular spacing. The vanes have corresponding magnetic field producing coils which are in a different angular spacing such that one coil and vane is aligned and a second coil and vane are misaligned. An electrical switch is coupled to the vanes for operation in response to rotation of the vanes. A current applied to one coil aligns its vane thereto and closes the switch. The closed switch applies a load current to a second coil whose vane is misaligned. When an overcurrent occurs, the corresponding resulting field aligns its vane and opens the switch. An off current applied to a coil can align a corresponding vane to also open the switch. The switch and actuator are dynamically balanced so that moments produced by shock and vibration do not operate the actuator vanes or switch.

REFERENCES:
patent: 2820866 (1958-01-01), Graybill et al.
patent: 2866031 (1958-12-01), Findley, Jr.
patent: 3783423 (1974-01-01), Mater et al.
patent: 4164722 (1979-08-01), Garvey
patent: 4275371 (1981-06-01), Vogel
patent: 4423296 (1983-12-01), McSparran

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