Piling rake
CA 1136851 A · Owner: Cazes, Lyle C. · Inventors: Cazes, Lyle C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cazes 5, PILING RAKE, ABSTRACT OF THE DISCLOSURE A rake for use with tractors has a blade connectable to a tractor and a plurality of teeth extending from the bottom of the blade. The teeth are pivotally connected to permit movement of the teeth away from objects encountered when the tractor moves. Fluid piston and cylinder combinations interconnect the teeth with the blade so movement of the teeth displaces pressurized fluid within the piston and cylinder combinations. The pressurized fluid reverses the pivotal movement when the teeth clear the objects.
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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- 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.