Maintaining an ice rink adjacent a side edge
CA 1317468 C · Owner: Marsh, Frederick J. · Inventors: Marsh, Frederick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Resurfacing or conditioning of the ice surface of an ice rink in the area adjacent the edge of the ice and the kickboards defining the edge of the ice is carried out by a burner unit which applies a propane flame in a direction downwardly onto the ice in an area confined by a metal guide surrounding the flame. The unit melts the ice on the board and at the edge to prevent ice build up using a simple economic construction on a device which produces little or no toxic fumes.
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
- Granted May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
- 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.