Valve with piezoelectric lamina and a method of producing a valve
US5779218A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | May 7, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/006
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve having a housing (1) and at least one sealing seat (2, 3) formed therein and one piezoelectric lamina (6) self-supportingly mounted at its first end on the housing (1) and with its second end closing or opening the sealing seat (2, 3) depending on the control voltage supplied to the lamina (6). The first end of the lamina (6) is embedded in a sealing compound (7) which, in turn is at least partially incorporated in the housing (1). The lamina (6) is thereby rigidly connected to the housing (1). While the first end of the lamina (6) is being sealed, it is fixedly held in relation to the housing (1). Consequently, the lamina (6) cannot be displaced even during a long period of operation. Subsequent adjustment is therefore unnecessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.