Prepackaged guard device sub-assembly for pressure responsive instruments
US4041761A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1976 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Jun 7, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/0645
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A prepackaged pressure responsive diaphragm sub-assembly of the flange type for isolating a pressure sensitive instrument from the source of fluid pressure at a connection with which the instrument is to be utilized. Comprising the sub-assembly unit is an annular diaphragm retained prepackaged in operative relation sandwiched between a housing and an open ended sleeve having an end face adapted for gasket sealed installation with a match-up sleeve provided by the end user. Securing the assembly are L-shaped fasteners supported in an annular flange mounted about the housing and gripping a shoulder formed on the sleeve. Displaced in the flange from the fasteners are bolt holes enabling installation to a flange on the user's pressure source connection while maintaining the prepackaged operative relation of the sub-assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.