Brake device with controlled brittle zone

PCT No. PCT/FR97/02234 Sec. 371 Date Dec. 16, 1997 Sec. 102(e) Date Dec. 16, 1997 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/38070 PCT Pub. Date Sep. 3, 1998A brake device having a master cylinder (1) connected to a pneumatic booster (2). The pneumatic booster (2) having a rigid casing (3) in which a...

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Bibliographic Details
Main Authors ULYSSE VERBO, CEDRIC LEBOISNE
Format Patent
LanguageEnglish
Published 16.04.2003
Edition7
Subjects
ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL
BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BYMECHANICAL FEATURES ONLY
CONTROLLING
PERFORMING OPERATIONS
PHYSICS
PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES
REGULATING
TRANSPORTING
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
VEHICLES IN GENERAL
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Summary:PCT No. PCT/FR97/02234 Sec. 371 Date Dec. 16, 1997 Sec. 102(e) Date Dec. 16, 1997 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/38070 PCT Pub. Date Sep. 3, 1998A brake device having a master cylinder (1) connected to a pneumatic booster (2). The pneumatic booster (2) having a rigid casing (3) in which a partition (4) moves to delimit a front chamber (5) from a rear chamber (6). The casing (3) has a front shell (31) which is secured to the master cylinder (1) to form a first wall for the front chamber (5) and a rear shell (32) which forms a second wall for the rear chamber (32). In order to increase the absorption of kinetic energy in the event of an impact force being applied to the front shell (31), the front shell (31) has a peripheral member (311) secured to the rear shell (32) and a central member (312) secured to the master cylinder (1). The peripheral member (311) has a larger relative diameter (D1) than the diameter (D2) for the central member (312). The peripheral member (311) and the central member (312) are connected together in an annular overlap region (313) in a manner such that in at least the overlap region (313) the peripheral part is located in an axial direction closer to the master cylinder (1). In response to a predetermined frontal or oblique impact force being applied to the front shell (31), the connection in the overlap region (313) separates to absorb kinetic energy and prevent such impact force from being transmitted to an operator.
Bibliography:Application Number: CN19971081596