Portable traffic barricade with warning signal lamp
CA 1058589 A · Owner: Pass, Sidney M. · Inventors: Pass, Sidney M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable barricade for use at school crossings and the like, has, a frame mounted on wheels or similar transporter devices and is provided, with at least one lamp assembly for warning parties approaching the barricade of the presence of a potentially hazardous condition. Attached to the frame is a brake which permits selective retention of the barricade in a desired position in a crosswalk or similar location for a predetermined length of time Once the need for the barricade at the particular location has ended the brake, may be easily released and the frame moved to another location.
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 July 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 17, 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.