Roller blind mounting and rolling system
CA 1301052 C · Owner: Steeves, Christopher · Inventors: Steeves, Christopher
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a roller blind construction comprising a flexible blind which is windable for lowering and raising the blind. The blind has a downward weighting which increases as it is lowered and the construction further includes a counterbalancing coil spring which products an upward pull increasing in direct relation to and neutralizing the downward weighting without lifting the blind.
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.