Pressure operated dispenser with shipping seal
CA 2347703 A1 · Owner: Gross, Richard A. · Inventors: Gross, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispensing system (30) is provided for a container (42) having an opening (41). The dispensing system (30) includes a closure (40) with an elevator (82) that is disposed within the container opening (41) for movement between fully elevated and fully lowered position while the elevator is restrained from rotating. Elevator (82) has a seat (96) defining an inlet passage (100) and thread (104). A rotatable housing (70) mounted on container (42) at opening (41) and thread (120) engaged with the elevator thread (104). Housing (70) has a dispensing passage (134) and occlusion member (136). Occlusion member (136) sealingly engages the elevator seat (96) and prevents flow through elevator …
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, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2021.
- 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.