Device for reopening an ice-bound water source
CA 1164743 A · Owner: Anderson, Lyle C. · Inventors: Anderson, Lyle C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for reopening an ice-bound water source is disclosed. Once a hole is provided in a frozen water source, the tubular member is inserted into the hole where it becomes frozen in place. The ice block which will form in the interior region (28) of the tubular member can be ejected. The tubular member itself is heated by a fluid circulating and heating means (62) which runs heated fluid between the walls (20 and 22) of tubular member (12). The heated fluid allows for release of the ice block and dislodgment of the entire unit from the frozen surface of the water supply.
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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 April 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
- 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.