Dry solids materials feeder with vibratory mechanism and a method of vibrating various component parts of the feeder
CA 2111230 C · Owner: Acrison, Inc. · Inventors: Ricciardi, Ronald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A volumetric dry solids, materials feeder comprises a supply hopper (12), a feed trough, (26) disposed below the hopper and an auger (28) disposed in the, feed trough (26) to feed out the material. The trough (26) is , anchored to a vibration base (32) on which is mounted a vibratory, mechanism (56). A vibration transfer spring (36) connects the, vibration base (32) to a bracket (38) secured to the hopper (12). Upon activation the vibratory, mechanism (56) vibrates the vibration base (32) and thus, the, trough (26) at a predetermined frequency, while the spring (36), transfers the vibration to the hopper (12). The spring (36) lessens, the amplitude of the transferred vibration 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 April 27, 1992 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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
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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.