Apparatus for supporting cooling pipes and reinforcing bars for an ice rink
CA 2188230 C · Owner: Wiebe, Jacob · Inventors: Wiebe, Jacob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for supporting cooling pipes for an ice rink comprises an elongate base on which is mounted a plurality of upstanding vertical legs and cross wires for supporting the pipes and reinforcing bars necessary for burying in a cast layer of concrete. Each cross wire defines a generally U-shaped cradle for properly supporting the cooling pipes. The apparatus can also provide supports for a lower layer of horizontal reinforcing bars and an upper layer of horizontal reinforcing bars which are properly spaced from the cooling pipes.
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 October 18, 1996 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2018.
- 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.