Depth charge igniter
CA 1047835 A · Owner: Aktiebolaget Thulinverken · Inventors: Holmgren, Kjell A. B.; Bjork, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
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Abstract From the Canadian patent
A depth charge igniter comprises a piston movable in a housing and provided with a firing pin for hitting a percussion cap when acted on by the surrounding water pressure. A shear ring holding the piston to the housing is arranged to be sheared off at a certain water pressure depending on the circumferential length of the shear ring in engagement between the piston and the housing. This length is easily adjustable.
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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.