Bi-stable magnetic latch

Details Bi-stable magnetic latch Bi-stable magnetic latch

2005-10-18

2005-10-18

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

C310S032000

Reexamination Certificate

active

06956453

ABSTRACT:
A magnetic bi-stable latch with an upper stator and a lower stator, a rotor between the upper stator and lower stator and adapted for rotation between a first latched position and a second latched position. Each of the stators is a magnetic assembly having at least two inner poles and two outer poles of magnetic material, and at least one stator further having a coil disposed in relation to the inner pole and the outer pole to form an electromagnet. The stators are positioned such that the outer poles of the upper stator align with the inner poles of the lower stator and the inner poles of the upper stator align with the outer poles of the lower stator. The rotor has permanent magnets mounted thereon such that in the first latched position the permanent magnets are aligned with poles of the upper and lower stators.

REFERENCES:
patent: 4164722 (1979-08-01), Garvey
patent: 4529270 (1985-07-01), Moss et al.
patent: 5303012 (1994-04-01), Horlacher et al.
patent: 6377380 (2002-04-01), Plesko
patent: 6507257 (2003-01-01), Mohler
patent: 2002/0027393 (2002-03-01), Brown
patent: 583475 (1976-12-01), None
patent: 0652629 (1995-05-01), None
patent: 81416 (1963-09-01), None

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