Universal internal core lifter apparatus
CA 2048218 C · Owner: D & L Incorporated · Inventors: Starkey, Glenn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a mold having a pair mold halves for molding plastic parts, there is provided an internal core lifter that has one end attached to an ejector system of a mold and that has an opposite end used to mold and eject the plastic part. A universal internal cone lifter is provided that reduces the number of custom core lifter designs and inventories because it can be cut to the desired length and pivoted to the desired angle. The one end of the core lifter blade both pivots and translates because it is mounted by a curved dovetail connection on a universal coupling that translates along a support. A linear dovetail sliding connection on the universal coupling slidably mounts the universal …
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 July 31, 1991 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2013.
- 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.