Vehicle brake actuators
CA 1088003 A · Owner: Girling Midland Ross Air Actuation Limited · Inventors: Basnett, Michael N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An actuator for a vehicle wheel brake comprises a cylinder divided by a piston into two separate chambers, and a spring located in one of the chambers and arranged to bias the piston. In one aspect a one-way valve is provided which permits the flow of air from within the chamber containing the spring to atmosphere, but prevents the flow of air into that chamber through the valve. In another aspect the gas within that chamber has a pressure greater than atmospheric pressure when the chamber has its smallest volume.
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
- Granted October 21, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 1997.
- 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.