Concealed type venetian blind lifting control mechanism
CA 2368336 A1 · Owner: Chung, Yung-Chen · Inventors: Chung, Yung-Chen; Cheng Chen, Chin; Hsu, Ya-Wei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A concealed type Venetian blind lifting control mechanism is constructed to include a lift cord roll-up unit the, lift cord roll-up unit including a transmission shaft two lift, cord roll-up members synchronously rotated with the transmission shaft to roll up/let off the lift cords of the Venetian blind, and two stop members fixedly mounted on the transmission shaft, and a lift cord lock adapted to lock the transmission shaft. The lift cord lock includes a second stop member, two stop rods moved with the second stop member relative to the stop members of the lift cord roll-up unit to lock/unlock the transmission shaft, and spring member which, supports the second stop member in the …
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 January 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2024.
- 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.