Combined service brake and spring brake cylinder
CA 2579180 C · Owner: Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh · Inventors: Savagner, Nicolas; Fantazi, Alain; Maille, Thierry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a combined service brake and spring brake cylinder for the braking system of a motor vehicle, in particular for utility vehicles comprising service and spring brake pistons guided inside a casing which is common for two brake cylinders wherein the, spring brake piston is loaded by at least one storage spring and has an external diameter greater than that of the service brake piston. According to said invention the spring brake piston is embodied in the form of an annular piston and at least a part of the rod thereof is constructed in the form of a piston tube which surrounds the service brake piston and forms an external radical running and sealing surface therefor.
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 August 31, 2005 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.