Method for removing snow from dome surface of large spatial building with film dome
CA 1313093 C · Owner: Hayakawa, Shin · Inventors: Hayakawa, Shin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a snow-removing method for the use of a large spatial building with a film dome, which is built for the purpose of application to facilities for sports in an area with high snowfall and aims to alleviate a snow load and save energy at the time of melting of snow by speedily removing the snow which lies on the surface of the film dome before the film dome is covered with a large quantity of snow.
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 January 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 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.