Dispensing device and a bathroom organizer incorporating same
CA 2081484 A1 · Owner: Ruck, Wolf E. · Inventors: Ruck, Wolf E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A viscous material dispenser (for liquid soap and the like) comprises a piston (216) in fluid communication with an air chamber (214). Depressing the piston (216) increases the pressure in the air chamber (214) and this pressurized air is conducted through a duct (230) to a reservoir (232). Depressing the piston (216) also opens a nozzle (241) leading from the bottom of the reservoir (232). In one embodiment the duct (230) terminates in a portion which turns back on the remainder of the duct (241) which portion incorporates a one-way non-return valve (286) so that the pressure in the reservoir (232) may be built up with consecutive strokes of the piston (216) due to the non-return valve …
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 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2013.
- 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.