Seal for a bi-parting door
CA 2276300 A1 · Owner: Kalempa, Walenty · Inventors: Drifka, Brian Norbert; Kalempa, Walenty
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door seal for use with a bi-parting door in which the door panels of the door have supplementary angled leading edges. One leading edge has a triangular, cross-section, while the other has a cross-section similar to a parallelogram. To, further the reliability of the door seal a plurality of magnets with , corresponding magnet attracting plates may be attached along the leading edges. Alternatively, both leading edges may have at least one magnet aligned with a magnet on the other edge. With the double magnet configuration the use of multi-pole , magnets, is necessary. The magnets also help reduce the bounce between the door panels which may be closed roughly, and increase the force …
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 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2021.
- 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.