Target construction
CA 2237802 C · Owner: Brejcha, Robert J. · Inventors: Brejcha, Robert J.
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 target for use with darts, for example has a base on which a target frame is secured the, frame having a plurality of spaces within each of which is a segment that is movable toward the base when it is struck by a thrown dart. Corresponding ones of the segments have cavities therein for the accommodation of inserts which are movable independently of the segment toward the target base when such inserts are struck by a thrown dart. The inserts are so arranged that, together they form an, annulus or ring of individually displaceable components. Interposed between the target base and the target segments and inserts are switches and a resilient biasing pad which bias the segments to an …
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 May 15, 1998 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2020.
- 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.