Transition pipe fitting
US4519634A · kind A · utility
15Cited by
13References
9Claims
0Family size
Inventor
Key dates
| Filing date | Dec 22, 1982 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Dec 22, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L7/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pipe fitting for interconnecting concentric pipes together to a gas meter unit includes a standard insulated O-ring union internally modified so as to include therein a substantially frusto-conical recess for mating engagement with a correspondingly shaped neoprene compression seal. The neoprene compression seal is disposed radially inwardly from the O-ring. A steel tube is swaged to a plastic gas conduit pipe and includes a flat washer welded to an upper portion thereof to resist pull out of the steel tube from the pipe fitting assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.