Diaphragm assembly for scuba diving regulator
US4508118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | May 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7781
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A diaphragm for a scuba diving regulator incorporates a contact member in the form of an axially thin spool cast or fabricated of low friction material. The contact member is installed at a central aperture of the diaphragm so that the end plates or flanges of the spool closely encompass the diaphragm on opposite sides. One of the flanges is located on the outside of the diaphragm, and the other is located on the inside, to be engaged by the actuating lever of the demand valve. No special sealing means need be provided about the spool, since the pressure difference between the ambient water and the air in the breathing chamber is always small, whatever be the depth of the diver in the water, but effective to maintain the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.