Positive seal steel coupling apparatus and method
CA 1164023 A · Owner: Gibson, Jack E. · Inventors: Gibson, Jack E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
JACK E. GIBSON OUR FILE #541, POSITIVE SEAL STEEL COUPLING APPARATUS AND METHOD THEREFOR, ABSTRACT OF THE INVENTION Method and apparatus by which lengths of seamless pipe are rapidly and economically fabricated into a fluid conveying pipeline. Steel tubular fluid conducting members in the form of pipe lengths are joined together by a steel coupler sleeve. The sleeve has opposed cavities which receive adjacent marginal ends of the members. Each marginal end of the pipe is forced into one cavity of the sleeve with great force such that the sleeve cavity holds the pipe ends together with a strong friction fit. A sealing substance is applied to the marginal ends of the pipe. A special hydraulic …
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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 March 20, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2001.
- 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.