Ice surfacing apparatus
CA 1193163 A · Owner: Henry, Emile J. · Inventors: Belanger, Donald J.; Henry, Emile J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for the re-surfacing of an ice surface particularly the surface of a curling rink. An ice melting machine having a plurality of burners is drawn at a slow and uniform rate of speed along a curling rink by a winch arrangement which is adapted for removable securement adjacent one end of the rink. A cable extends from the melting machine to the winch, and means are provided for stopping the winding of the cable when a predetermined length of cable has been wound on the winch. The winch includes a drum which has a diameter and a speed of rotation such that the machine is drawn along at a speed in the range of between about 3 to 4 feet per minute. This apparatus ensures uniform …
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 September 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 10, 2002.
- 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.