Truck mounted rotating broom system
CA 2438936 C · Owner: Stewart & Stevenson Llc · Inventors: Teague, Timothy Dwayne; Rush, John Conaway, Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotating broom system to be installed on the front of a self-propelled vehicle such as a truck used for the high speed sweeping and removal of snow or debris from paved surfaces such as airport runways assembly has two major components: a rotating broom drive assembly and a support structure. The rotating broom assembly is connected to the support structure using a non-rigid connection.
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 August 29, 2003 and granted May 17, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2025.
- 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.