Compressed gas saving device
US4450861A · kind A · utility
Inventor
Key dates
| Filing date | Apr 16, 1981 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Apr 16, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8225
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Compressed gas saving device designed to be implanted in a pipe system connecting a control valve outlet to the inlet of a pressure-user apparatus constituted by a body in which a first passage is provided which passage starts from a first end of the body, provided with means connecting it to the control valve, towards a second end of the body, provided with means connecting it to the said pipe system, the first passage traversing a seat provided in the said body, and adapted to be closed off by a valve returned on the said seat by a spring member, the effect of which is adjustable in intensity by means of a hand-operated adjusting member and tends to oppose the rising force of the valve head generated by the gas flowing from the control valve, whereas a second passage, provided in the body, constitutes a bias of the said first passage, short-circuiting the aforesaid valve head provided with a one-way valve whose flowing direction is that of the gas issued from the pressure-user apparatus, the said adjusting member controlling an indicator means in the form of a visual indicator which is instantly locatable in relation to the external surface of the said body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.