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Title: Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection

A piezoelectric valve in a gas delivery system includes a piezoceramic element bonded to a valve seal and disposed over a valve seat, and retained in position by an O-ring and a retainer; an insulating ball normally biased by a preload spring against the piezoceramic element; an inlet gas port positioned such that upon admission of inlet gas into the valve, the piezoceramic element is positively seated. The inlet gas port is located only on the side of the piezoceramic element opposite the seal.
Inventors:
 [1]
  1. (Yardley, PA)
Issue Date:
OSTI Identifier:
869458
Assignee:
United States of America as represented by United States (Washington, DC) PPPL
Patent Number(s):
US 5340081
Contract Number:
AC02-76CH03073
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
Country of Publication:
United States
Language:
English
Subject:
means; positively; seating; piezoceramic; element; piezoelectric; valve; inlet; gas; injection; delivery; bonded; seal; disposed; seat; retained; position; o-ring; retainer; insulating; ball; normally; biased; preload; spring; positioned; admission; seated; located; opposite; piezoceramic element; valve seat; gas delivery; inlet gas; gas injection; normally bias; valve seal; piezoelectric valve; /251/