Valves and valve actuation – Balanced valves – Reciprocating
Reexamination Certificate
2008-07-22
2008-07-22
Fristoe, Jr., John K. (Department: 3753)
Valves and valve actuation
Balanced valves
Reciprocating
C251S129150, C137S340000
Reexamination Certificate
active
07401762
ABSTRACT:
A solenoid-operated valve for use with fuel cells has a valve housing made of aluminum, for example and having first through third heating medium passages defined therein. A valve seat disposed in and fastened to the valve housing is made of stainless steel, for example. A valve head has a disk which can be seated on and unseated off a valve seat member of a valve seat. The valve head is coupled by threaded surfaces to the distal end of a movable member which is displaceable when a solenoid is energized. The movable member is made of a magnetic metallic material, and the valve head is made of a corrosion-resistant metallic material such as stainless steel or the like, for example.
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patent: 2004-183681 (2004-07-01), None
Hikichi Kouetsu
Kato Takahide
Matsumoto Koji
Murai Masakazu
Ohmori Hiroto
Fristoe Jr. John K.
Keihin Corporation
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
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