Simplified pipe coupling
CA 1093608 A · Owner: Plessey Incorporated · Inventors: Hulsey, Theodore
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipe-encircling steel shield includes integral bands with inclined slots for engagement with screw-type tightening elements. The shield compresses a gasket or packing member against the pipe ends to be coupled. This structure reduces the number of parts in comparable couplings by about one-half. The shield area preferably includes longitudinal slots which trap gasket material during tightening, facilitating use with irregular pipe sections.
Read the whole patent
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 January 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 13, 1998.
- 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.