Pressure relief device
CA 1235357 A · Owner: Johnson Matthey Public Limited Company · Inventors: Mcfarlane, Glenton P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bursting disc assembly comprises a generally tubular body provided with an external screw thread and at one end of the, body, a counterbore which forms an annular seat within the body to accommodate at least the peripheral regions of a preferably flat bursting disc; a bursting disc located on the seat and a plug with a longitudinal bore pushed into and a tight fit within the counterbore so as to hold the bursting disc in place the plug, being prevented from rotating with respect to the body by knurls which bite into the walls of the counterbore. In use the assembly is screwed into the housing of a pressure relief device so that the free end of the plug bears against and forms a …
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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 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
- 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.