Patent Yard Sign in
Expired Canadian patentCanada

Sod harvester and method for rolling sod with grass side out

CA 1266686 C · Owner: Brouwer Gerardus J. · Inventors: Zwambag, Henry; Brouwer Gerardus J.

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

TITLE: SOD HARVESTER AND METHOD FOR, ROLLING SOD WITH GRASS SIDE OUT (Divisional), ABSTRACT OF THE DISCLOSURE A sod harvester in which sod is cut, conveyed upwardly, and then travels downwardly over a floppy conveyor and falls into a roll forming enclosure formed by a bottom conveyor and a vertical conveyor. The floppy conveyor swings downwardly at the start of roll forming to, reduce the free fall of the sod, and swings upwardly as the roll grows. When the roll is formed the bottom con-, veyor is unlatched and tilts downwardly to discharge the roll, at the same time pulling into cocked position a core tube injector arm. When the roll discharges the, bottom conveyor snaps upwardly, …

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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
  • 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 28, 1985
GrantedMarch 13, 1990
Term endedMarch 13, 2007
Patent numberCA 1266686 C
Classification (IPC)E21C49/04 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedOct 28, 1985Patent grantedMarch 13, 1990Term endedMarch 13, 2007

Sources & verification

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