Pressure actuated valves and methods of use
US11938499B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2020 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Nov 24, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B15/658
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides unique pressure actuated valves and related methods that may be used in applications where a plurality of fluid emission devices are provided on a plurality of lines containing fluid under pressure, in order to prevent fluid from escaping from the fluid emission devices until a consistent threshold or predetermined level of fluid pressure is obtained in the lines, without causing significant water pressure and/or flow loss through the valves. Valves of the present invention include a housing having an upper body and a lower body that may be coupled together to form an inner chamber, the lower body having an inlet in communication with a source of fluid under pressure, the upper body having an outlet in communication with a fluid emission device. A hollow movable fluid transmission piston is provided in the chamber for communicating between the inlet and outlet. The chamber formed between the upper and lower bodies may be provided with cup seals at opposite ends of the chamber to reduce friction and prevent fluid from entering therein, and a side air vent. A wider lower end of the piston is urged toward the lower housing body using a biasing mechanism,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.