Gas shut-off device
US9791050B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Sep 26, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2260/028
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a valve for a compressed gas cylinder, comprising: a valve body with an inlet, an outlet and a passage connecting the inlet with the outlet; a shut-off device of the passage with an actuating pin extending in the passage; a check-valve between the shut-off device and the inlet, the check valve comprising a seat and a movable closing member initially held at a position distant from the seat by contact with a guiding surface and movable past the position by the pin so as to cooperate with the seat and prevent a refilling flow of gas from the outlet to the inlet. The guiding surface is on a tubular portion fixed to the valve body and comprising at least one radial aperture so as to allow the refilling flow of gas to by-pass the closing member when in the distant position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.