Load-responsive linking device for vehicle brake pressure regulators
AssigneeWABCO Westinghouse GmbH
InventorErich Reinecke
Life of this patent
Estimating the term…
Abstract
A vehicle load responsive linking device for controlling operation of a brake pressure regulator in effecting supply of pressurized fluid to the brake system at a pressure commensurate with the prevailing vehicle load, and including a fulcrumed lever for actuating the brake pressure regulator according to a resultant force of a pair of opposing spring forces exerted thereon by respective tensionally opposingly disposed springs having adjacent ends secured to the lever and the opposite ends secured to sprung and unsprung portions, respectively, of the vehicle, the distance between the sprung and unsprung portions, as determined by the vehicle load, determining the tension of the springs, which tension acts to dampen and isolate axle vibrations from the pressure regulator device.
Claims8
A vehicle load-responsive linking device for use with a vehicle brake pressure regulator operable to a supply disposition for effecting supply of brake actuating fluid, said linking device being operably disposed between a sprung portion and an unsprung portion of the vehicle, on which the brake pressure regulator is mounted, and an unsprung portion of the vehicle and comprising:
- a. a fulcrum lever having one end pivotally supported in a bearing carried on the brake pressure regulator;
- b. a primary spring having one end connected to said sprung portion and the other end connected to said lever at an axial point between said one end and a free end of the lever for exerting a first force thereon in one direction normal to the axis of the lever;
- c. a secondary spring having one end connected to said unsprung portion of the vehicle and the other end connected to said lever at said axial point thereof for exerting a second force thereon in an opposite direction relative to said one direction, said first force being variable according to the distance between the sprung and unsprung portions of the vehicle, according to vehicle load;
- d. a piston rod having one end extending out of the brake pressure regulator, and against which piston rod end said one end of said lever is biased into abutting contact by said first force of the primary spring, said piston rod being axially movable in a direction corresponding to said opposite direction for effecting operation of the brake pressure regulator to said supply disposition and consequent corresponding angular displacement of said lever;
- and characterized by:
- e. a stop member carried on a bracket portion on the brake pressure regulator, said stop member being abuttingly engageable by said free end of said lever for limiting said angular displacement thereof and, therefore, said axial movement of said piston rod to an amount coinciding with said operation of the brake pressure regulator to said supply disposition.
Dependencies are inferred from the claim text.