Hand-held dispenser with automatic venting
CA 1291086 C · Owner: Stull, Gene · Inventors: Stull, Gene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A hand-held dispenser for a flowable product in-, cluding a container having a neck portion at its top and a cap body having a discharge opening and a base portion cooperable with the neck portion of the container to mount the cap body thereon. The base and neck portions have cooperable automatic pressure-relief valving means which are responsive to increased gas pressure in the container, for venting a limited quantity of gas when the container is in its upright position thereby, to prevent possible explosion of the container and spillage or splattering of its contents. In one form there, is a first annular sealing surface on one portion and a cooperable annular sealing surface …
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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.