Automatic air feeding mechanism for pneumatic tires, and pneumatic tire connecting device
CA 2475334 A1 · Owner: Nakano, Hirofumi · Inventors: Nakano, Hirofumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic air feeding mechanism for pneumatic tires that is capable of automatically feeding air into a pneumatic tire by rotation of the pneumatic tire with respect to the axle when the air pressure in the pneumatic tire becomes lower than a predetermined value. It comprises an axle (101) and a , wheel main body rotatable with respect to the axle (101). Further the wheel , main body is provided with an automatic air feeding mechanism (1). The automatic air feeding mechanism (1) comprises a constant pressure holding section (2) and a compression section (3). The constant pressure holding section (2) holds the air at a constant pressure all the time and is ventilably connected to a …
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 April 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2024.
- 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.