Pressure vessel with diaphragm compression seal
CA 2021787 C · Owner: A.O. Smith Corporation · Inventors: Schurter, Robert M.; Palmerton, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure vessel (10) has partially, telescoped upper and lower shells (12 14), a diaphragm, (20a) with a peripheral edge (26) trapped and sealed between the shells (12, 14), and compression structure (50, 52) on the inner side (44a) of the peripheral edge (26) of the diaphragm (20a) reducing the amount of diaphragm material requiring compression and also increasing the compression of the bulge (42) of the peripheral edge (26) of the diaphragm (20a) in the bulge (34) of the upper wall section (18) of the lower shell (14) to enhance the seal thereat. The compression structure includes one or more internal ribs (50, 52) on the inner side (44a) of the peripheral edge (26) of the diaphragm …
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
- Filed July 23, 1990 and granted November 26, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2012.
- 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.