Bulk lubricant delivery unit
CA 2183189 C · Owner: Freeman, Lewis Gene · Inventors: Freeman, Lewis Gene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bulk lubricant delivery unit for delivering lubricant to the die cavity or shot sleeve of a die casting apparatus includes a transfer member in the form of a linear transfer plunger or slide that acts to transfer controlled amounts of lubricant from a loading chamber to a delivery chamber for delivery by air pressure to the casting apparatus. Various embodiments of delivery units are included arranged in three groups having similar characteristics including the charge control means and the form of the transfer plunger. Various arrangements of die casting apparatus with a lubricant delivery unit for delivering lubricant into selected locations of a die casting machine are also included.
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 August 13, 1996 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2018.
- 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.