Arcuate impact plate and comminuting machine with arcuate impact plate
CA 2120689 C · Owner: Doppstadt Calbe Gmbh · Inventors: Doppstadt, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The comminuting machine includes a housing provided with a rotary impact mechanism. A conveyor conveys infed material to the rotary impact mechanism which cooperates with an arcuate impact plate in disintegrating the infed material. The comminuted material is discharged through a discharge opening of the housing. On an inner side of the arcuate impact plate parallel rows of teeth extend transversely to the rotational direction of the rotary impact mechanism. The teeth rows are transversely and lengthwisely offset from each other. The individual teeth protrude in opposition to the rotational direction and decrease in height in the rotational direction. The arcuate impact plate extends …
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 April 6, 1994 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 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.