Snow removal system
CA 1286472 C · Owner: Oller, Frank G. · Inventors: Oller, Frank G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system is disclosed for the removal of snow from roofs. The system comprises a plurality of brackets affixable to a roof in a spaced configuration thereon. Each bracket has one or more slots capable of receiving and releasably retaining a wire. In association with the brackets are wire retaining means and wire releasing means. Actuation of the wire releasing means causes the wire released from two spaced brackets to slice through an accumulated snow load breaking the seal between the snow and the roof and resulting in the snow sliding off the roof.
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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.