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Expired Canadian patentCanada

Primer assembly

CA 1286914 C · Owner: Eti Explosives · Inventors: Yunan, Malak Elias

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

TITLE, Primer Assembly, ABSTRACT OF THE DISCLOSURE A primer assembly for use in the non-electric initiation of cap-insensitive explosives. especially of deck-loaded explosive charges by means of a single downline of low-energy detonating cord (LEDC), includes a percussion-actuated detonator seated in a cavity in a high-energy primer. and an explosive coupler in which a coupling explosive charge, housed in a plastic connecting block is in, initiating proximity to the detonator's persussionsensitive ignition charge and sufficiently close to a cord-receiving perforation or conduit in or adjacent the primer as to be initiatable by the detonation of LEDC threaded therethrough. A preferred …

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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.

Why it's free to use

  • Granted July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 30, 1985
GrantedJuly 30, 1991
Term endedJuly 30, 2008
Patent numberCA 1286914 C
Classification (IPC)F42B3/10 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMay 30, 1985Patent grantedJuly 30, 1991Term endedJuly 30, 2008

Sources & verification

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