Valve with expandable sleeve fitted over perforated walls of inlet and outlet channels to control flow therebetween
US11156299B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Mar 3, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K21/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve features an outer housing, in which there are provided inlet and outlet channels respectively reaching into the housing from inlet and outlet openings thereof. The two channels are axially closed at adjacent inner ends thereof, but feature perforated circumferential walls. A resiliently expandable sleeve is disposed around the circumferential walls in a position normally overlying the perforations, while leaving a gap between the sleeve and inner surfaces of the housing. A charging port communicates with the gap to enable pressurization thereof. Pressurization of the gap normally holds the sleeve tightly over the perforations to prevent flow from one channel to the other. When pressure in the inlet channel exceeds the pressure in the charging chamber, the sleeve radially expands from the circumferential walls of the channels to uncover the perforations and allow fluid to flow between the channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.