Hydraulic brake booster
CA 1072152 A · Owner: Bendix Corporation (The) · Inventors: Runkle, Dean E.; Brown, Arthur K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic brake booster includes a spool valve within a housing for communicating fluid pressure into a chamber for urging a piston in a direction actuating a master cylinder, thereby effecting a brake application. The communication between an inlet passage and the chamber is regulated by a land on the spool valve cooperating with a corresponding land on the housing. In order to prevent particles which are carried in the pressurized fluid from wedging in the interface between the land and the corresponding housing land, an additional land is provided on the spool valve. The additional land cooperates with another land on the housing to form a small clearance therebetween so that large …
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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.