Softstart valve means
US7891375B2 · kind B2 · utility
10Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87233
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A softstart valve means comprises a main valve member which is only switched over after a certain time from a closed position into an open position. The opening force required for switch over of the main valve member can be produced selectively in a manner dependent from pressure obtaining in a secondary duct or in a time dependent fashion. The respective operational mode can be selected by actuation of switch over means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.