Patent Yard Sign in
Expired Canadian patentCanada

Hauling and cutting plant

CA 1137123 A · Owner: Halbach & Braun · Inventors: Braun, Ernst

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 hauling and cutting assembly of the type having a conveyor trough and a scraper chain conveyor bridging the conveyor trough includes a roller member radially mounted for rotation on the end of a bearing pin which supports a sprocket wheel and a guide member operatively connected to the conveyor trough overlaps the roller member to provide radial support therefor.

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

  • Granted December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 19, 1980
GrantedDecember 7, 1982
Term endedDecember 7, 1999
Patent numberCA 1137123 A
Classification (IPC)E21C25/28 +2 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedSep 19, 1980Patent grantedDec 7, 1982Term endedDec 7, 1999

Sources & verification

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