GB1120068A - Improvements in or relating to reservoirs for liquid pressure master cylinders - Google Patents

Abstract

1,120,068. Hydraulic brakes; brake iridicators; clutch control. AUTOMOTIVE PRODUCTS CO. Ltd. 29 Nov., 1966 [29 Nov., 1965], No. 50601/65. Headings F2E, F2F and F2L. [Also in Division G1 A liquid reservoir 11 for a liquid pressure master cylinder 10 for controlling an hydraulic braking system is formed of a plastics material having a low light-transmitting capacity and having the greater part of its wall of such a thickness that the contents are not visible and the wall is reduced in thickness along a striplike zone 17 which extends in a vertical direction when the reservoir is in its operative position, the thickness of the zone being such that it is sufficiently transparent to permit the contents of the reservoir to be seen. The master cylinder 10 is mounted in a generally vertical direction and consists of a piston 19 which extends into a sleeve 18 formed in a recess in the lower part of the master cylinder barrel 10. Fluid for the master cylinder enters through a transverse passage 16, a passage in a rigid ring 24, an annular clearance space 32, a cut-away portion 33 in a sealing ring 22 and radial openings 28 in the piston 19, located in a recess 25 in the sleeve is a secondary sealing ring 26. Fluid pressurized in the chamber 23 is supplied via outlet passage 12 to the wheel brake cylinders of a vehicle braking system. Alternatively, the master cylinder may control the clutch of a motor vehicle.