Ice spike
CA 2233478 C · Owner: Wood, Lynn Anne · Inventors: Moody, Jack R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety device comprising an ice spike having a mounting piece strapped to the forearm of the wearer with a spike support plate attached to the mounting piece by a hinge. An opener is biased to position the spike support plate in an open position and the spike support plate is held in a closed position using a hook and look fastener. When the spike support plate is in the open position, a spike attached to the spike support plate is positioned by a spring or the equivalent such that its pointed end points outwardly from the spike support plate. The ice spike provides a person who has fallen through a hole in the ice with a device capable of gripping the slippery edges of the hole such that …
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 March 27, 1998 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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.