Foam spray nozzle assembly for trigger sprayer
CA 2179107 C · Owner: Spathias, Adonis · Inventors: Dobbs, Douglas B.; Spathias, Adonis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manually actuated liquid sprayer has a ported element selectively movable between a retracted position and an extended position at which the element lies in the path of the spray plume for mitigating the spray. The element has a cylinder with a smooth inner wall defining a turbulence chamber coaxial with the discharge orifice of the nozzle cap to which the element is mounted. A transversely extending perforate wall is located in the cylinder and has an open, port of a size greater than that of the discharge orifice and being coaxial therewith. The element is movable relative to the nozzle cap between the retracted position at which the liquid spray passes through the open port without …
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 13, 1996 and granted January 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2018.
- 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.