Liquid injection system for sprayers
CA 2307660 A1 · Owner: Maynard, Ray A. Ii · Inventors: Womac, Alvin R.; Maynard, Ray A. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a system for direct injection of chemicals or other additives in a liquid solution into a spray nozzle (35). The injection system of the present invention may be mounted adjacent or in , close proximity, to the spray nozzles of a sprayer. The present invention comprises a variable speed/stroke diaphragm pump (12) capable of providing a double pumping action such that a liquid solution may be continuously pumped at a controllable rate to one or more spray nozzles (35) of a sprayer.
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 20, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 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.