A goods-handling door having improved sealing
CA 2244750 A1 · Owner: Nergeco · Inventors: Kraeutler, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An industrial door comprising a movable screen (3) for sealing or opening an aperture wherein said screen is advantageously vertically raisable and has two vertical edges (3D 3G) defining the screen width (L) and being engageable with respective guides (1 2). The bottom, wall of each guide has a horizontal cross-section defining a first or moving area where the spacing (E) between the bottom walls of the guides is greater than the width (L) of the screen and at least one second or sealing area where the spacing (E) between the bottom walls of the guides is smaller than the width (L) of the screen. When the screen is moved its edges do not rub against the guides. When the screen is lowered, …
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 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2019.
- 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.