Low capacity pump with enhanced compatibility
CA 2347140 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 plastic body (1) defining a metering chamber (10) provided at one first end of a ball (5) valve (11) for intake of liquid product from a reservoir and at a second end with an exhaust valve (12) borne by the inner portion of an axially mobile spray tube (2) by co-operating with a helical spring (3) mounted coaxial around said spray tube (2) outer portion provided with a lateral flange (21) against which one first end (31) of said spring (3) provides wedging support. The invention is characterised in that the body (1) and the ball (5) are made from a transparent or at least translucent plastic material.
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 October 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 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.