Gas service connector for plastic pipe
CA 1052411 A · Owner: Dresser Industries · Inventors: Anderson, Gerald L.; Kresge, Wilbur R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, 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 degrees F. For …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.