Electromagnetic valve apparatus

Details Electromagnetic valve apparatus Electromagnetic valve apparatus

2007-05-22

2007-05-22

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

Electrically actuated valve

Including solenoid

Reexamination Certificate

active

11002062

ABSTRACT:
The force to draw an armature of an electromagnetic valve apparatus driving a valve for opening or closing a high-pressure liquid passage is increased and valve bouncing is alleviated by a surface of the core being flat and a surface of the armature facing the surface of the core being shaped convexly spherical. Interference of the surfaces is prevented by a smaller initial gap in a central portion of the faces, even when the armature is installed aslant due to insufficient accuracy of the component parts. Strong electromagnetic attraction can be secured because the smaller the gap is, the stronger the electromagnetic attraction.

REFERENCES:
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patent: 4717118 (1988-01-01), Potter
patent: 4976405 (1990-12-01), Graner et al.
patent: 5056754 (1991-10-01), Graner et al.
patent: 5188336 (1993-02-01), Graner et al.
patent: 7044111 (2006-05-01), Cook
patent: 2002-98024 (2002-04-01), None
patent: 2003-193939 (2003-07-01), None

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