Road planer control system
CA 1266109 C · Owner: Baldwin, Donald C. · Inventors: Baldwin, Donald C.; Loy, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A road planer machine having a housing containing a rotating planer drum and having access doors in the housing for maintenance and inspection of the cutting equipment which includes detectors for determining when the access doors are not in their normally closed positions and for disabling the propulsion system of the planer machine as well as the drum rotating system so that the machine can neither move nor the drum rotate if any of the access closure doors are not in their normally closed position.
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 February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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.
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.