Diaphragm piston assembly
US4915018A · kind A · utility
15Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Sep 13, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm piston assembly in which an annular ring member is provided, preferably at the outer clamping periphery of the diaphragm between the underside of the diaphragm and body, to exert a force on the diaphragm in the direction of the cover that clamps the diaphragm to the body, thereby encouraging the diaphragm convolution to assume a disposition in a preferred direction corresponding to the direction in which the convolution is predisposed by the inherent "spring effect" of the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.