Patent Yard Sign in
Expired Canadian patentCanada

Flywheel sickle drive mechanism

CA 1290154 C · Owner: Guinn, Ronald K. · Inventors: Guinn, Ronald K.

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

Abstract of the Disclosure An eccentric drive mechanism especially useful for a sickle assembly of a harvester or mower includes two shafts that are coupled to a wheel-like drive member such as a pulley, with one of the shafts being in offset relation to the other shaft and the central axis of the drive member. Each shaft presents inclined, flat wall portions in mutual interengagement, and releasable means are provided for bringing the wall sections into a position of wedging contact with each other and to the drive member in order to retain the rotative position of one of the shafts in a certain pre-, defined orientation relative to the rotative position of the other shaft and to the drive …

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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 18, 1988
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290154 C
Classification (IPC)A01D41/14 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedApril 18, 1988Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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