Gas cylinder
US7134379B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Sep 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7176
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a gas cylinder, for improving sealing characteristics of the gas cylinder and improving convenience in manufacturing, including: a valve having a gas opening/closing pin at a through hole in its center, for intermittently passing a gas, and additionally having a valve dividing body seated on a groove approximately in a lower part of the through hole; a spindle to an upper inside of which the valve is inserted; and a piston inserted to an inside of an open cylinder of the spindle, and having, a step threshold formed at a predetermined distance from an upper end, to which an O-ring for maintaining sealing is fit, and having another step threshold ranging from a lower side of the step threshold to a lower end on an inner lateral surface of the piston, to which an O-ring is fit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.