Solenoid valve

Details Solenoid valve Solenoid valve

2005-12-06

2005-12-06

Douglas, Steven O. (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Balanced valve

Reexamination Certificate

active

06971627

ABSTRACT:
A solenoid valve appropriately used for pressure control of various fluids, or the like is concerned, and a solenoid valve is provided, which achieves improvement in sliding property of a plunger and is excellent in control characteristics. More specifically, a plunger1is substantially cylindrical-shaped and slidably supported at its outer peripheral side by a sleeve, the plunger being provided with a large-diameter portion1a,which constitutes a sliding portion, the large-diameter portion1abeing alternately provided with a plurality of convex surface portions1dand a plurality of groove portions1eand having a cross sectional shape like petals.

REFERENCES:
patent: 4313571 (1982-02-01), Bellicardi et al.
patent: 4946132 (1990-08-01), Reiter
patent: 3904447 (1990-08-01), None
patent: 3933331 (1991-04-01), None
patent: 54-139321 (1979-09-01), None
patent: 57-141278 (1982-09-01), None
patent: 6-137453 (1994-05-01), None
patent: 10-196829 (1998-07-01), None
patent: 2000-46227 (2000-02-01), None

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