Draw bar for a motor grader
CA 1049779 A · Owner: Caterpillar Tractor Co. · Inventors: Cole, Carroll R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Motor graders have a longitudinal main frame which carries a circle mounting bar that pivots on a horizontal axis at a connecting end and that has a carrying portion remote from its connecting end. A circle rotates on a vertical axis on the mounting bar carrying portion, and a grader blade is mounted on the circle. The present improved circle mounting bar is a boxlike beam with internal vertical webs, and the beam increases in width from its connecting end toward a carrying portion of box-like cross section which is a separate part integrally welded to the beam. The shape of the beam in plan is intermediate between an isosceles triangle with its apex at the connecting end and a parabola …
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 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.