Child resistant closure energy planes
CA 1289517 C · Owner: Wilson, Woodrow S. · Inventors: La Vange, Donald; Wilson, Woodrow S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A child resistant dispensing closure of the type having a cap and a spout mounted thereon for rotation about a substantially horizontal axis. The upper surface of the cap is provided with a pattern of ribs. The upper surface of the spout is provided with a plurality of ribs each of which has a distinct energy plane. All but one of the energy planes fails to allow sufficient purchase on their respective ribs and fails to produce the proper force vector required in order to initiate rotation of the spout when a manual force is applied to the latter energy planes. Only one of the energy planes is adapted so as to allow sufficient purchase and to produce the proper force vector required in …
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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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 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.