Versatile air test apparatus
US5983706A · kind A · utility
Inventors
Key dates
| Filing date | Mar 10, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a single compact fitting for air, CO.sub.2, or nitrogen pressure testing either gas piping or waste piping. Each fitting is used for gas pipes of a particular outside diameter and waste pipes of a single larger diameter. The typical plumber would have a set, for example four, of the inventive fittings available, one for each size waste pipe that is be tested. The inventive fitting couples easily to either gas fuel piping or waste piping. A single air-pressure gauge is used to test either type of piping system. The inventive fitting is not limited to waste, vent, or gas piping systems; it can also be used to couple to other piping systems. The inventive fitting, in addition to being more versatile than conventional air-pressure test fittings, is also smaller and more compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.