Valves and valve actuation – Electrically actuated valve – Including solenoid
Reexamination Certificate
2007-01-09
2007-01-09
Bastianelli, John (Department: 3751)
Valves and valve actuation
Electrically actuated valve
Including solenoid
C251S337000
Reexamination Certificate
active
11131495
ABSTRACT:
A solenoid valve moves an armature back and forth translationally between valve open and valve closed positions without the armature having any sliding engagement with any fixed valve part. This is accomplished by supporting the armature with a spring having one periphery engaging a fixed valve surface and another periphery engaging the armature so that armature movement causes flexure of the spring, but no sliding contact. This helps prevent generation of dirt within the valve and ensures accurate armature movement to make the valve durable and reliable. Springs in both washer and cylindrical helical shapes can accomplish this, and the armatures supported by such springs can accommodate valve closing seals of different materials and shapes.
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Mullally Michael J.
Welker Paul E.
Bastianelli John
Brown & Michaels PC
Seal-Tech, Inc.
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