Friction spring for leak detection poppet

Details Friction spring for leak detection poppet Friction spring for leak detection poppet

2011-07-05

2011-07-05

Bastianelli, John (Department: 3753)

Valves and valve actuation

With means to increase head and seat contact pressure

Spring

C251S193000, C251S337000

Reexamination Certificate

active

07971853

ABSTRACT:
A pressure management apparatus including a housing (30) defining a fluid communication passage between first and second fluid ports (46, 48). A poppet (40) is disposed in the housing and is movable between first and second positions. The first position prevents fluid communication between the first and second fluid ports, and the second position permits fluid communication between the first and second fluid ports. The poppet includes a portion (75) translatable along an axis relative to the housing. A member (78) is fixed with respect to the housing and is associated with the portion of the poppet. Spring structure (72) is associated with the portion of the poppet. The spring structure is constructed and arranged to engage and bias the portion of the poppet to frictionally engage a portion of the member to create a dashpot damping of resonance of the poppet in the second position.

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