Shock tube assembly
CA 2182871 C · Owner: Dyno Nobel Holdings Usa, Inc. · Inventors: Sobczak, Brian R.; Thomas, J. Donaldson; Adams, Craig F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
Claude doesn't help design weapons, ammunition or explosives, so this page has no Reinvent kit. To develop this one, work with a federally licensed manufacturer (many of these items are regulated) and a registered patent attorney or agent, listed on the USPTO roster.
Abstract From the Canadian patent
A signal transmission tube assembly includes a signal transmission tube (12), such as a coil of shock tube on a spool (10), having opposite terminal ends (14, 16) and containing a reactive material. The open terminal ends (14, 16) of the shock tube provide the sole exits for the signal generated therein and sole entry points for contaminents. Sealing means (18a, 18b) seal both terminal ends (14, 16) of the signal transmission tube (12) against escape from the assembly of the signal engendered by initiated reaction of the reactive material, and protects the interior of the signal transmission tube (12) from contamination. The sealing means (18a 18b) may be a releasable, sealing means (18a …
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
- Filed March 3, 1995 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2017.
- 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.