A brake cylinder unit
CA 2394941 A1 · Owner: Asano, Yoshio · Inventors: Asano, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a brake cylinder unit wherein both the normal brake and the spring brake that is used as a parking brake, etc. can act, and in addition wherein it is possible to shorten the axial direction length. In a brake cylinder unit (1) wherein both the normalservice brake means (2) and the spring brake means (3) can act, there is provided a clutch means (4) that links the rod (111) and the second piston (21) when the pressure fluid ceases to act on the second action chamber (24) of the spring brake means (3) and the, first piston (11) starts to move towards to the rod (111). This clutch, means (4) comprises a screw (31) that is provided on the rod (111), a nut member (32) that is provided …
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 July 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.