Pressurizing and pressure regulating valve and fuel supply system employing the same
US8256445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2008 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7922
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressurizing and pressure regulating valve is provided. In one embodiment, the pressurizing and pressure regulating valve includes a sleeve, a first flow passage formed through the sleeve, a second flow passage formed through the sleeve, and a piston slidably disposed in the sleeve. The piston is configured to move between: (i) a pressurizing position wherein the piston impedes fluid flow through the first flow passage, and (ii) a pressure limiting position wherein the piston impedes fluid flow through the second flow passage. A sensing chamber is fluidly coupled to the first flow passage and configured to receive pressurized fluid therefrom. The piston is configured to move from the pressurizing position to the pressure limiting position when the pressure within the sensing chamber exceeds a predetermined minimum pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.