Hydraulic brake booster with cam and lever ratio changer

Details Hydraulic brake booster with cam and lever ratio changer Hydraulic brake booster with cam and lever ratio changer

B - Operations, Transporting

60

T

303/74

B60T 13/14 (2006.01)

Patent

CA 1279351

HYDRAULIC BRAKE BOOSTER WITH CAM AND LEVER RATIO CHANGER ABSTRACT OF THE DISCLOSURE The brake booster (12) includes a housing (30) with at least one piston (38) disposed in a bore (32) between a pressure chamber (42) and a work chamber (76). The piston (38)is disposed adjacent a valve housing (79) containing therein a valve assembly (80) and the valve assembly (80) is connected to an input assembly (72) at an end of the valve housing (79). The piston (38) includes a cam surface (78) engaged by a lever (17), the lever (17) abutting an actuator part (81) biased by a resilient spring (83) toward the lever (17). Actuation of the booster (12) effects a greater displacement of the piston (38) than the input assembly (72) and valve hous- ing (79) because of the engagement of the lever with the cam surface (78) of the piston (38).

521861

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