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Expired Canadian patentCanada

Endless-type gear

CA 1079777 A · Owner: O And K Orenstein And Koppel Aktiengesellschaft · Inventors: Alpers, Gunther; Bentz, Helmut

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

The disclosure describes a Caterpillar?type gear for vehicles with self-contained drive, in particular for hydro baggers, which comprises a driving drum a roller wheel for, guiding the endless chain and chain links connected with, each other by means of pins. In the longitudinal central plane of the driving drum, cam-type teeth are arranged which are provided with straight surfaces on the sides turned to each other. The external periphery of driving drum is provided on both sides of the teeth, with rims for chain links. The cam-type teeth are arranged on the periphery of rim provided on both its sides with inclined planes for guiding the chain links. Chain drive plates of chain links which …

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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 June 17, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 17, 1980
Term endedJune 17, 1997
Patent numberCA 1079777 A
Classification (IPC)B62D55/08 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 17, 1980Term endedJune 17, 1997

Sources & verification

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