Highway barrier transporter
CA 2111664 C · Owner: Horton, Fred · Inventors: Horton, Fred; Denman, Owen S.; Quittner, John P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transporter for a length of highway barriers includes a series of barrier transporting units each, having at least one pair of wheels positioned to straddle a length of highway barriers, at least one engaging device configured to engage one of the barriers and at, least one lifting device coupled to the engaging device to lift the engaging device and the engaged barriers. Articulating couplings interconnect axially adjacent transporting units to form a train configured to straddle the length of highway barriers such as the train can be moved over a length of highway barriers to be transported. The transporter includes a leveling system that maintains each of the transporting units level …
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 16, 1993 and granted November 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2015.
- 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.