Apparatus and method for finishing a blow molding
CA 2104671 C · Owner: Dunlap, Richard L. · Inventors: Dunlap, Richard L.; Sanford, Edward L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus (30) and a method for finishing a blow molding (24) is disclosed as in including a rotary head (42) on which a knife holder (44) is provided for mounting a first knife (46) for radial movement with respect to the rotational axis (A). A second knife holder (44) is mounted in a diametrically opposite relationship to the first knife holder and actuated so as to maintain a balanced realtionship during rotation of the rotary head. An actuating mechanism (48) actuates the knife holders (44) to move the knife (46) held by the first knife holder (44) radially inward with respect to the rotational axis (A) during rotation of the head (42) to cut the blow molding received thereby and …
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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
- Filed March 2, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 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.
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.