Electric detonator of delay type
CA 1311153 C · Owner: Ochi, Koji · Inventors: Harada, Masahide; Ochi, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
62-262,810, ELECTRIC DETONATOR OF DELAY TYPE Abstract of the Disclosure, An electric detonator of delay type including leg wires connectable to bus wires, a capacitor connected across the leg wires for storing the electric energy supplied from an electric blaster via the leg wires a, delay circuit connected across the leg wires and generating an igniting signal at a predetermined timing a, switching circuit and an igniting resistor connected to the switching circuit, whereby the switching circuit is made conductive in response to the igniting signal to discharge the electric energy stored in the capacitor through the igniting resistor to explode the detonator. In order to operate the …
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.
Why it's free to use
- Granted December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 2009.
- 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.