Crawler apparatus for vehicle
CA 2188103 C · Owner: Kitano, Masanori · Inventors: Kitano, Masanori; Shibasaki, Syunichi; Katsuta, Yuij
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A crawler apparatus, or crawler unit, which replaces a vehicle's wheel is disclosed. The crawler includes a drive wheel, a pair of front driven wheels, a pair of rear driven wheels, pairs of intermediate driven wheels and an endless, belt. The belt is wound about the wheels and defines a triangular shape. The drive wheel rotates the belt to move the vehicle. Stopper units are provided at the front and rear sides of the crawler to restrict the forward and rearward pivoting of the crawler about its drive wheel. The drive wheel is supported by a main frame. A sub frame is pivotally supported by the main frame by way of rubber bushings. This structure enables the sub frame to be inclined in 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 October 17, 1996 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2018.
- 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.