Vibrating hoola-hopper
CA 2134602 C · Owner: King, Alan M. · Inventors: King, Alan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible hopper made of rubber or other suitable flexible material which is driven by a motor through an eccentric drive so as to cause the hopper and a drive auger to vibrate to more readily dispense product in the hopper. One or more flexible fingers are attached to the auger and are flexed as the auger rotates so as to further improve the flow characteristics of the materials in the hopper.
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 October 28, 1994 and granted October 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2016.
- 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.