Detonation arrestor
CA 2032791 C · Owner: Rajewski, Robert Carl · Inventors: Rajewski, Robert Carl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detonation arrestor for a flare line includes a cell housing having a particulate quenching medium composed of stainless steel balls. The stainless steel balls are held in place by wire mesh and steel bars. A flame front diffusor is located on either side of the cell housing so that the detonation arrestor is symmetrical may be placed in the flare line in either direction. The flame front diffusor may be a plate or a smaller cell. A deflector ring encircles the interior of the cell housing and prevents flame fronts from flashing along the edge of the cell housing.
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, and the Claude kit works from them.
Why it's free to use
- Filed December 20, 1990 and granted August 30, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2012.
- 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.