Dispensing package for a viscous product with a reusable pumping mechanism
CA 2068898 A1 · Owner: Krishna, Raj · Inventors: Krishna, Raj; Harris, Kurt N.; Fillmore, William E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispensing package (14, 114, 214) which is made up of a reusable pumping head portion (16 116, 216), and a body portion (18, 118 218) to which the head, portion is removably attached. The pumping action is initiated by the reciprocation of an annular reciprocable dosing piston (30, 130, 230) which may be a part of the body portion (30, 130) or a part of the head portion (230). The reciprocation of the dosing piston is initiated by the arcuate movement of a pumping lever (40) that is carried by the head portion. The pumping lever is biased by a spring (46) to return to its original position at the conclusion of a pumping cycle. Striping can be accomplished by providing the dosing piston …
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 May 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.