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Expired Canadian patentCanada

Crusher unit for use in a mobile crushing system

CA 1309701 C · Owner: Thus, Heinrich Wilhelm · Inventors: Thus, Heinrich Wilhelm

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A crusher unit is part of a mobile crushing system which may also include one or more endless conveyors if required. The crusher unit has a substructure (1) that can be set down on the ground (14), a crusher (4), and a housing (9) for the control and supply devices that are needed. Transmission of vibrations from the crusher (4) to the housing (9) is avoided by disposing the housing (9) on a frame (8) which in, operation, is deposited on the ground (14). However if the, substructure (1) is lifted, as when the crusher unit is transported from one location to another the frame is, supported on the substructure. _ ~ _

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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

  • Granted November 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
  • 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 27, 1988
GrantedNovember 3, 1992
Term endedNovember 3, 2009
Patent numberCA 1309701 C
Classification (IPC)B02C2/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedOct 27, 1988Patent grantedNov 3, 1992Term endedNov 3, 2009

Sources & verification

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