Cord control device for a venetian blind to control raising and lowering of the slats
CA 2299030 C · Owner: Huang, Tai-Long · Inventors: Huang, Tai-Long
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cord control device includes a mounting seat mounted removably in a horizontal top housing from which a plurality of horizontal slats are suspended downwardly one above another. A bottom rail is disposed below the slats. Each of two control cords passes through the top housing and through the slats and has a first end portion fastened to the bottom rail and a second end portion which extends out of the top housing. An elongated rack is disposed in a roller-mounting space in the mounting seat. A pair of stationary rollers are journalled in the roller- mounting space one above the other proximate to the elongated rack and are passed slidably over by the second end portions of the control …
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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
- Filed February 18, 2000 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2022.
- 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.