Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection
US5340081A · kind A · utility
15Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jun 7, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.