Improvement to a pump body and method for making same
CA 2299520 A1 · Owner: Bougamont, Jean-Louis · Inventors: Bougamont, Jean-Louis; Dumont, Pierre; Lompech, Herve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a pump comprising in particular a substantially cylindrical single-piece body (1) provided in its lower part, with an intake , conduit (11) for the product and a valve consisting of a cavity (10) containing an element (2) capable of moving between a down stop (12b) corresponding to the closure of said intake conduit (11) and an up stop (12a) corresponding to the opening of said conduit (11). The invention is characterised in that the up stop (12a) is formed by at least one inner discontinuous projection (120) whereof the transverse dimension (X) measured in the cavity (10) is at least equal to 20 % of the greatest dimension of the mobile element (2).
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 July 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 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
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.