Patent Yard Sign in
Expired Canadian patentCanada

Wearing element for comminuting machines with rotating knife head

CA 2285147 C · Owner: Pallmann Maschinenfabrik Gmbh & Co. Kg. · Inventors: Pallmann, Wilhelm

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A wearing element for a comminuting machine whose rotating knife head includes a support disc a support ring arranged coaxially to the support disc and knife carriers which are distributed uniformly over the circumference and are arranged axially between the support disc and the support ring. The wearing element is composed of a plate having a certain thickness and the shape of a ring sector. The plate covers the inner periphery of the outer side of the support ring and has in the area of the gap between two knife carriers an inclined surface extending over the thickness of the wearing element toward the support ring. A wearing lip for protecting the support ring is arranged so as to extend …

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 6, 1999 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 1999
GrantedDecember 30, 2003
Term endedOctober 6, 2019
Patent numberCA 2285147 C
Classification (IPC)B27L11/00

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedOct 6, 1999Patent grantedDec 30, 2003Term endedOct 6, 2019

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.