Mechanical seal for pumps and method of fabricating same
CA 1325648 C · Owner: Wentworth, Robert S. · Inventors: Wentworth, Robert S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
IMPROVED MECHANICAL SEAL FOR PUMPS AND METHOD OF FABRICATING SAME, ABSTRACT:, A mechanical seal assembly (12) for use with centrifugal pumps (10) including at least one unitized elastomer assembly for urging the seal faces (36,38) of a pair of seal rings into sealing engagement with each other. The unitized elastomer assembly serves as a seal ring mounting arrangement and includes a spaced pair of metallic rings (54,56) which are chemically bonded to an annular elastomer body (48) disposed therebetween and whose cross section between the rings is loaded in shear when the elastomer assembly is operatively arranged in the pump. A mechanical seal (64) is established between at least one of …
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 December 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 2010.
- 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.