Process diaphragm seal
US6120033A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/0645
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process diaphragm seal includes a diaphragm seal body having a seal body ring portion surrounding a cavity and a diaphragm having a diaphragm ring portion. The diaphragm ring portion includes a diaphragm ring outer portion that corresponds to a seal body ring outer portion of the seal body ring portion and a diaphragm ring inner portion that corresponds to a seal body ring inner portion of the seal body ring portion. A first weld of the diaphragm ring outer portion to the seal body ring outer portion forms a closed path around the seal body ring portion. A second weld of the diaphragm ring inner portion to the seal body ring inner portion forms a closed path around the cavity. Between the first and second welds a diaphragm ring back surface is in substantially continuous contact with the seal body ring portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.