Crossing arm assembly
CA 2214485 A1 · Owner: Lamparter, Ronald C. · Inventors: Lamparter, Ronald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A school bus is equipped with a crossing arm mechanism that is mounted on the front bumper at the passenger side. The mechanism includes a crossing arm assembly that is pivoted between a retracted (stored) position adjacent the front bumper and an extended (operative) position where the crossing arm assembly extends outwardly of the bus bumper in a perpendicular fashion to control pedestrian traffic. The crossing arm assembly includes a plastic bracket that is pivotally attached to an actuating mechanism and a cantilever beam that is attached to the bracket at one end. The bracket has two vertically spaced pivot arms and a beam mounting portion that supports the cantilever beam. The …
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 September 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2019.
- 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.