Manual container mounted pump
CA 1053622 A · Owner: Corsette, Douglas F. · Inventors: Corsette, Douglas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispensing pump of the type in which the outlet valve will open and will remain open only when the pumping pressure is maintained above a predetermined minimum. The pump cylinder in which-the pump piston reciprocates con-, stitutes a unitary part of the outlet valve and also communicates freely with expansible, contractable pressure accumulation chamber, defined in part by the outlet valve and in part by the stationary pump housing. The pump piston and the outlet valve of the unit are movable independently of each other, while the stationary outlet or discharge passage for the pump is placed in communication with the pressure accumulation chamber only when the pressure within that chamber …
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
- Granted May 1, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 1996.
- 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.