Curtain bottom tensioning assembly
CA 2212628 C · Owner: Rite-Hite Corporation · Inventors: Schulte, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A curtain bottom tensioning assembly comprised primarily of a resilient member (50) extending across the bottom of the door (10). The resilient member (50) is directly or indirectly coupled to a guide extension (100) extending beyond the leading edge of the door (10) and engaging vertical guide members (20 30) , to guide the door (10) in a vertical plane. The guide extensions (100) also engage the vertical guide members (20, 30) to restrict the guide extensions (100) from moving horizontally toward the curtain (10). The coupling between these horizontally restricted guide extensions (100) and the resilient member (50) places a tension on the resilient member (50). The resilient …
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 February 8, 1996 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2018.
- 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.