Parallel cylinder type check valve
US10352479B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 11, 2014 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Sep 27, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K47/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates generally to a parallel cylinder-type check valve and, more particularly, to a parallel cylinder-type check valve in which two shock-absorbing dampers are connected in parallel to each other so as to absorb shock when a valve is closed, wherein the length of a rocker arm connected to any one shock-absorbing damper is adjusted to be longer according to the principle of a lever in order to provide a sufficient shock-absorbing effect. Also, the present invention relates to a parallel cylinder-type check valve, which is rapidly closed at a high speed at the time of the initial closing of the valve and is slowly closed at a low speed at the later closing of the valve by means of the parallel cylinder, thereby preventing noise and vibration, as well as preventing water hammer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.