Valve actuating device with opening reduced speed
US10591083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2015 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Sep 2, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2205/0394
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a valve actuating device comprising a body with a bore and a bottom, an actuating element sealingly housed in the bore of the body and forming a first chamber with the body, a piston sealingly extending through a bore in the actuating element, the piston and bore delimiting a second actuating chamber, a passage for an auxiliary fluid between the first and second chambers so that a movement of the piston in the bore of the actuating member can increase the pressure in the first chamber and move the actuating element. The fluid passage comprises a restriction and a check-valve, both arranged in parallel, so as to limit the flow of the auxiliary fluid from the second chamber to the first chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.