Second stage demand breathing regulator
US5343858A · kind A · utility
53Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Mar 1, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B9/022
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A second stage demand regulator is disclosed which has a regulator body with a spring loaded poppet valve mounted therein. A diaphragm mounted in said regulator body responds to pressure differentials to provide demand breathing gas to a user in communication with the regulator. The demand valving function is provided by the spring loaded poppet having a lever in contact with the poppet and the diaphragm. Upon acutation of the diaphragm, a greater mechanical advantage is initially provided to the lever through a point of contact with an operating surface that is closer to the axis of rotation than a second point of contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.