Fluid storage and expulsion system
US5469701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Sep 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4824
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid storage and expulsion system having a rigid tank, the tank having two propellant chambers and two independently operable piston assemblies slidable in their propellant chambers for expelling propellant. In a first embodiment, a coaxial fluid storage expulsion system having inner and outer pistons is provided. Accordingly, the inner piston is provided which is slidable in an inner annular space for expelling fluid therein through a second opening. As well, an outer piston is provided which is slidable in an outer annular space for expelling a second fluid through a first opening. In a further embodiment, the pistons and tanks are positioned in series. As such, the rigid tank is provided with forward and aft propellant chambers as well as forward and aft piston assemblies. A piston guide, which extends the length of the rigid tank is positioned concentrically within the tank. A pressurant is provided for moving the forward piston assembly and expelling the fluid from the forward tank through an annular space of the second aft portion of the piston guide. As well, pressurant is ported through the annular space of the forward portion of the piston guide moving the aft piston as…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.