Portable traffic light
CA 2328517 A1 · Owner: Wws Leasing · Inventors: Brinkman, Gordon E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roadwork safety unit mounts on the receiver hitch of a vehicle and connects to the conventional trailer lighting coupling. The unit includes a carrier for, carrying the usual equipment to a site where the safety unit is to be used for example, cones, picks, shovels, rakes and pole-mounted signage. The carrier also carries a, telescopically extendible standard supporting a light unit that includes a red stop light, and a flashing amber warning light. The lights may be operated by a traffic control, person also handling the pole-mounted signage. The unit is quickly and easily mounted on a vehicle for transport to a roadwork site and can be transported along, the road with moving …
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
- Filed December 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2022.
- 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.