Apparatus and method for introducing air into a hydropneumatic reservoir
US8132587B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2009 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86389
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Apparatus for introducing air (3) into a hydropneumatic reservoir (1) connected to pipework (2) comprising a sensor (6) of the pressure in the reservoir, a valve (9) controlled by a signal from the sensor and opening into the open air on one side, a tube (8) connected at one end to the valve and at the opposite end to the pipework (2), a first check valve (11) arranged in the tube to prevent liquid from travelling towards the open air, and a second check valve (5) arranged in the pipework between the reservoir (1) and the tube (8), the second check valve (5) being in the closed state when the pressure in the pipework (2) on the side nearest the tube (8) is less than the pressure in the reservoir (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.