Master cylinder

Details Master cylinder Master cylinder

B - Operations, Transporting

60

T

303/83

B60T 11/16 (2006.01) B60T 11/22 (2006.01) B60T 17/22 (2006.01) G01F 23/74 (2006.01) G01L 19/12 (2006.01) H01H 35/38 (2006.01) H01H 36/00 (2006.01)

Patent

CA 2004775

ABSTRACT A master cylinder having a housing with a first bore therein for retaining a pair of pistons which move in response to an input force and develop fluid pressure to effect a brake application. A second bore in the housing carries a differential area piston connected to the pressure chambers. A reed switch retained in the housing is aligned with a first magnet located on a float in a reservoir and a second magnet is attached to the differential area piston. A ferromagnetic shield located between the reed switch and second magnet has first and second openings located in a plane on either side of the reed switch. Should a failure occur in either pressure chamber, the differential area piston moves to allow magnetic field to pass through the openings in the shield and activate the reed switch to develop a warning signal and inform an operator of a failure mode condition in the master cylinder.

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