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Expired Canadian patentCanada

Holder with v-knife blade for bi-directional rupture disc assembly

CA 2594805 C · Owner: Fike Corporation · Inventors: O'Halloran, Daniel G.; Krebill, Michael D.; Stilwell, Bradford T.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention relates to a cylindrical holder member for a bi-directional bulged rupture disc. The support body of the holder has a rim that supports the rupture disc with the concave surface of the disc facing the holder. The support body is provided with a unitary one-piece centrally creased cutting , element that is of generally V-shaped configuration in plan view. The cutting element has a pair of elongated converging leg components with each leg component being connected to and supported by the interior wall surface of the holder body, with each leg component having an arcuate cutting edge. The cutting edges of the leg components merge at the crease in the cutting element to …

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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

  • Filed August 25, 2005 and granted October 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 2005
GrantedOctober 15, 2013
Term endedAugust 25, 2025
Patent numberCA 2594805 C
Classification (IPC)F16K17/40

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedAug 25, 2005Patent grantedOct 15, 2013Term endedAug 25, 2025

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.