Means for positively seating a piezoceramic element in a piezoel

Details Means for positively seating a piezoceramic element in a piezoel Means for positively seating a piezoceramic element in a piezoel

1993-06-07

1994-08-23

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Having element dimensionally responsive to field

251368, F16K 3104

Patent

active

053400810

ABSTRACT:
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.

REFERENCES:
patent: 4492360 (1985-01-01), Lee, II et al.
patent: 4756508 (1988-07-01), Giachino et al.
patent: 4903732 (1990-02-01), Allen
patent: 5029610 (1991-06-01), Hiratsuka et al.
"Pre-Operational Test Results of the TFTR Neutral Beam D-T Gas Delivery System" by Wright et al., 10th Topical Meeting on the Technology of Fusion Energy, Boston, Mass. Princeton University Report J-384, Jun. 7-12, 1992.

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