Valve seat and valve ball for vacuum solenoid valves

Details Valve seat and valve ball for vacuum solenoid valves Valve seat and valve ball for vacuum solenoid valves

2007-08-24

2011-10-04

Fristoe, Jr., John (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S129140, C251S368000

Reexamination Certificate

active

08028969

ABSTRACT:
A vacuum solenoid valve may comprise a valve body defining an interior cavity and include a plurality of ports configured to be in fluid communication with the interior cavity of the valve body. One or more valve seats may be disposed about an opening between at least one of the plurality of ports and the interior cavity. One or more valve members may be configured to be moveably disposed within at least a portion of the interior cavity of the valve body and to sealingly engage with the valve member. Either the valve seat and/or the valve member may comprise a material having a higher resistance to wear and erosion compared to valve body.

REFERENCES:
patent: 4474332 (1984-10-01), Kaska
patent: 4714089 (1987-12-01), Ueda et al.
patent: 4903938 (1990-02-01), Nishizawa et al.
patent: 5138068 (1992-08-01), Ehrenfreund et al.
patent: 6363920 (2002-04-01), Parker et al.
patent: 6598853 (2003-07-01), Appleford et al.
patent: 6840499 (2005-01-01), Ahn
English language International Search Report and Written Opinion dated Apr. 23, 2008 in corresponding PCT Application No. PCT/US07/76753, 8 pgs.

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