B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/73
B60T 8/26 (2006.01)
Patent
CA 1086358
ABSTRACT OF THE DISCLOSURE A load-responsive pressure reducing valve assembly for hydraulic brake systems to be interposed between a brake master cylinder and the rear wheel brake cylinders of a wheeled vehicle. The valve assembly includes a fluid pressure proportioning valve which restricts the flow of fluid from the master cylinder to the brake slave cylinders during a predetermined range of increasing fluid pressure supplied therefrom to the brake slave cylinders. The valve assembly also includes a deceleration sensing valve having a spherical inertia- responsive member that is responsive to a predetermined rate of vehicle deceleration to travel a predetermined distance up an incline to close off the supply of hydraulic fluid to a control chamber wherein the fluid pressure acts on a portion of the aforesaid proportioning valve, thus setting the reduction starting pressure of the fluid pressure proportioning valve. A deceleration control is provided in the valve assembly and is responsive to a predetermined range of increasing hydraulic fluid pressure supplied from the vehicle brake master cylinder to steepen or increase the angle of inclination of the incline to optimize the front and rear wheel braking power distribution in correspondence with the load shift which occurs as a result of the vehicle braking operation under any given load condition on the vehicle. 1.
280197
Macrae & Co.
Sumitomo Electric Industries Ltd.
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