Method and apparatus for calibrating a multiple port pump
CA 2102625 C · Owner: Ennesser, Robert E. Iii · Inventors: Ennesser, Robert E. Iii; Pardinas, Guillermo P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for calibrating a multiple port metering pump includes a graduated scale (152) mounted on the head (10) of the pump and an indicator (200) mounted on the body (12) of the pump whereby the angular orientation of a plurality of radially extending, sequentially spaced outlet ports (94 96) may be adjusted relative to the pump piston (52) to calibrate and balance the flow of fluid therethrough.
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, 1992 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 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.