Gas service connector for plastic pipe
US4005880A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Jul 3, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L47/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gas service connector for connecting a plastic underground gas service line to an aboveground meter installation. Comprising the connector is a continuous length of gas carryable plastic tubing concentrically spaced within a tubular elbow-shaped gas-free steel pipe jacket. The spacing at each end of the sleeve and tubing is gasket sealed against leakage with their common end aboveground being interlocked to resist axial displacement therebetween. In one embodiment the spacing between sleeve and tubing in at least the aboveground portion defines an air space rendering the unit capable of withstanding aboveground temperatures of up to about 100.degree. F. For withstanding higher aboveground temperatures to 150.degree. F. the spacing between tubing and sleeve in a second embodiment is filled with a reinforced epoxy from at least just belowground level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.