Wear-resistant valve apparatus

Details Wear-resistant valve apparatus Wear-resistant valve apparatus

1998-07-09

2000-08-22

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Including solenoid

251 64, 25112921, F16K 3106

Patent

active

061059315

ABSTRACT:
A wear-resistant valve, having at least two parts which move relative to each other, and which impact against each other, avoids damage to the contacting parts over long operating periods, with very little additional space requirement, and at low cost. At least one of the impact surfaces is covered with a thin coating. The material used for the coating is plastic, in particular, a fluorine-containing polymer material, such as polytetrafluoroethylene. The valve closing element, whose valve closing surface makes contact with a valve seat when the valve is actuated, is preferably provided with the coating. Valve arrangements which are actuated electromagnetically by a pulsing electrical signal are preferred areas of application for the present invention.

REFERENCES:
patent: 2860850 (1958-11-01), Rhodes
patent: 3877478 (1975-04-01), Longworth
patent: 4678160 (1987-07-01), Yamada et al.
patent: 4826132 (1989-05-01), Moldenhauer
patent: 4917351 (1990-04-01), Lindbloom et al.
patent: 5064169 (1991-11-01), Alberts et al.
patent: 5267721 (1993-12-01), Stroh
patent: 5375813 (1994-12-01), Rozinsky
patent: 5707039 (1998-01-01), Hamilton et al
patent: 5878991 (1999-03-01), Krimmer et al.
patent: 6019344 (2000-02-01), Engel et al.

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