Raisable-curtain goods-handling door with improved lateral sealing
CA 2097991 A1 · Owner: Kraeutler, Bernard · Inventors: Kraeutler, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A raisable flexible curtain door for closing a doorbay, the door including two lateral uprights each having a slideway that forms a constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being subjected to a traction force directed towards the inside of the door-bay said, relief being sufficiently flexible to be able …
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 June 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2015.
- 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.