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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. 3 figs.
Inventors:
Issue Date:
OSTI Identifier:
7242718
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-132419
Patent Number(s):
US 5340081; A
Application Number:
PPN: US 8-072371
Contract Number:
AC02-76CH03073
Resource Relation:
Patent File Date: 7 Jun 1993
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; GASES; TRANSPORT; VALVES; DESIGN; OPERATION; PIEZOELECTRICITY; SEALS; CONTROL EQUIPMENT; ELECTRICITY; EQUIPMENT; FLOW REGULATORS; FLUIDS; 420200* - Engineering- Facilities, Equipment, & Techniques