Crawler gear assembly
CA 2218367 C · Owner: Mattel, Inc. · Inventors: Fritzinger, Daniel D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A child's riding vehicle employing a unique and novel gear assembly and engagement structure includes a frame (12) having plural wheels and a gear , assembly (40) fixed on the frame which includes an output gear (54) nonrotatably connected to at least one of the vehicle's wheels. A motor (66) on the frame is mounted on an arm (68) which is movable between an engaged position (A) and a disengaged position (B) and a segment gear (62) mounted on , the frame adjacent the gear assembly engages the motor's pinion (66a) and defines a path between the engaged and disengaged position. Unique and novel gear tooth profiles are employed in both the gear assembly and the engagement structure to …
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 14, 1995 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2017.
- 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.