Valve diaphragm
US5535987A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Dec 29, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/126
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid flow control valve has a diaphragm for sealing against a valve seat. The diaphragm has an enlarged resilient annular rim portion which is clamped between mating portions of the valve to seal and support the diaphragm within the valve. The annular rim portion comprises an annular bead that extends substantially completely around a peripheral edge of the diaphragm and is integrally molded with the diaphragm. In addition, a separate flexible ring member having a radially inwardly facing cavity for receiving the bead is separably attached to the bead such that the annular rim portion is formed both by the bead and the ring member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.