Road grader and scarifier
CA 1300878 C · Owner: Alguire, Robert · Inventors: Alguire, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-way spreader that is equipped to grade and scarify the surface of a road bed having a dump body that is tiltably mounted up the chassis of a motor vehicle so that the back of the dump body can be raised and lowered between a rest position against the chassis and an elevated position above the chassis. A frame is secured to the bottom of the dump body which is suspended behind the chassis. An elongated scraper blade is secured in the lower part of the frame and extends transversely to either side of the chassis. During grading operations the, weight of the dump body rests upon the blade as it is moved over the road bed.
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.