Liquid dispensing pump
CA 1305950 C · 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 liquid dispensing pump in the form of a trigger sprayer includes a thimble-shaped valving element containing inlet and outlet valves, and located within a cylindrical portion of the pump body. In one embodiment a pressure, accumulation chamber is defined between the pump body and the valving element, and a pump piston operates within the valving element and defines therewith a pump chamber in open communication with the accumulation chamber via spaced flexible and extendable straps which interconnect the inlet and outlet valves for permitting a portion of the valving element to move axially into a discharge valve opening position. Vent valving is effected by either the pump piston or the …
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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
- 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.