Radial pump
CA 2106201 A1 · Owner: Joosse, Wiecher J. H. · Inventors: Joosse, Wiecher J. H.; Schermers, Albertus C.; Groen, Wijnand F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Radial pump with a rotary shaft (4) on which an eccentric (6) is fitted. A sleeve (8) to which a plurality of pistons (12) is connected is fitted rotatably on the eccentric (6). The connection between the sleeve (8) and the pistons (12) is achieved by a part made of elastically deformable material (9) which is fitted around the sleeve (8). A controlled opening and closing movement of the pistons is thus obtained through rotation of the pump shaft (4). More than one series of pistons can be fitted around the shaft.
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 April 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2014.
- 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.