Scraping element, piston and arrangement for emptying a bag-like envelope containing a pasty liquid
CA 2281636 A1 · Owner: Liardon, Olivier · Inventors: Liardon, Olivier; Sanga, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arrangement for emptying a bag-like envelope (11) containing a pasty liquid (12) consists substantially of a rigid housing (13) for the envelope and an axially movable piston (10) for compressing the envelope (11) and for discharging the liquid (12) through a discharge opening (14) in the housing. The piston comprises on its outer edge (15) at least one scraping element (16) which is movable between an insertion position (I) and a scraping position , (S). In the insertion position (I) the scraping edge (17) of the scraping element (16) is spaced from the inner surface (19) of the housing (13). In the scraping position (S), the scraping edge (17) is pressed against the inner …
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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 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2020.
- 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
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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.