Electromagnetic actuator

Details Electromagnetic actuator Electromagnetic actuator

2007-10-03

2010-02-16

Barrera, Ramon M (Department: 2832)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C335S278000, C335S281000

Reexamination Certificate

active

07661653

ABSTRACT:
An electromagnetic actuator includes a coil, which is formed in an annular shape, a plunger, and a stator, which receives the coil inside the stator and forms a magnetic circuit along inner and outer circumferences of the coil through the plunger. The stator includes first and second stators. The first stator includes a magnetic attraction portion that attracts the plunger in an axial direction of the plunger by magnetic force generated by the coil, and a first yoke portion that covers the outer circumference of the coil. The second stator includes a radial direction magnetism delivery-receipt portion that delivers magnetism in a radial direction of the plunger to and receives magnetism in the radial direction from the plunger, and a second yoke portion that covers the outer circumference of the coil. The first yoke portion and the second yoke portion overlap in the axial direction and are magnetically joined.

REFERENCES:
patent: 4472699 (1984-09-01), Fujii et al.
patent: 2003-097756 (2003-04-01), None

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