Multi-brake shoe means for a multi-braking surface braked assembly
AssigneeWestinghouse Air Brake Company
InventorQuentin T. Clemmons
Life of this patent
Estimating the term…
Abstract
This invention relates to a braking apparatus wherein the heat absorbing mass of a rotating braked element, such as a vehicle wheel, is increased by securing to, such as each wheel of the vehicle, a brake disc of such size as to constitute a heat sink capable of absorbing the heat generated by a pair of brake shoes when in braking engagement therewith, the periphery of the wheel forming a braking surface that is simultaneously engaged by a third brake shoe whereby the wheel constitutes a second heat sink capable of absorbing the heat generated by the third brake shoe.
Claims12
Multi-brake shoe means for transmitting braking forces to multi-braking surface formed at substantially right angles to each other on an element to be braked, said multi-brake shoe means comprising:
- a. a member movable toward and away from the multi-braking surfaces on the element to be braked,
- b. a plurality of braking elements each having a braking face via which a braking force is transmitted to a corresponding braking surface when moved into braking engagement therewith, and, wherein the improvement comprises:
- c. a single rigid means rockably mounted on said movable member and having said plurality of braking elements so rockably mounted on and carried by said means so as to enable said plurality of braking elements to transmit braking forces to their corresponding braking surfaces notwithstanding the rate of wear of certain of said braking elements exceeding the rate of wear of certain other of said braking elements.
In combination:
- a. a rotatable member to be braked constituting a mass that has formed thereon a plurality of braking surfaces, formed at substantially right angles to each other, wherein the improvement comprises:
- b. a plurality of braking elements, each effective to transmit brake horsepower to a corresponding one of said plurality of braking surfaces upon movement into braking engagement therewith, the mechanical energy of said braking horsepower being converted to heat energy that is stored in and dissipated from that portion of said mass of said rotatable member on which the corresponding braking surface is formed,
- c. a member movable toward and away from said rotatable member, and
- d. a single rigid means having a pivotal connection and carrying each of said plurality of braking elements and being so pivotally connected to said member that upon movement of said movable member toward said rotatable member each braking element is brought into braking engagement with its corresponding braking surface, said pivotal connections so cooperating with one another that an increase in the rate of wear of any of said plurality of braking elements relative to the rate of wear of the remainder of said plurality of braking elements is ineffective to reduce the braking horsepower transmitted by each braking element to its corresponding braking surface on the mass of said rotatable member.
Dependencies are inferred from the claim text.