Dart
CA 1292025 C · Owner: Mckenna, Arthur J. · Inventors: Mckenna, Arthur J.
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 dart has a cavity extending rearwardly from a front end of the main body for a predetermined distance to an end wall, and a point assembly comprises a collar detachably securable to the front end of the main body, the collar having an axially-extending aperture extending therethrough, and a point comprising an elongated shaft with a pointed front end the shaft, extending through the collar and having a forwardly tapering portion at least in the region of the collar. The forwardly tapering shaft portion engages a rear end of the collar in a forward position of the point relative to the body to limit forward movement of the point relative to the body and permitting the body and collar to …
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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.