Arrow with nock assembly
CA 2102006 C · Owner: Guest, Elmer F. · Inventors: Guest, Elmer F.; Eckert, Leon A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An arrow with a nock assembly is disclosed. The rear end of the arrow shaft has, a bore which has a rearwardly facing opening. One or more vanes are fixed to the outer, surface of the arrow shaft. An adapter is mounted within the bore and is fixed to the, shaft in a predetermined angular position about the central longitudinal axis of the arrow, shaft relative to the vanes. The adapter has a socket which has a rearwardly facing, opening. A nock which has a head end and a bifurcated tail end, is removably mounted, to said adapter so that the head end is located within the socket and the bifurcated tail end, is outside of the socket. A mechanism is also provided for releasably locking …
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 October 29, 1993 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2015.
- 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.