Anti-locking mechanism
AssigneeThe Budd Company
InventorsGeorge Mekosh, Jr., David O. Hulse
Life of this patent
Estimating the term…
Abstract
An anti-locking mechanism includes an assembly attached to move with a wheel of a vehicle. The assembly includes a spring biased inertia wheel movably mounted to a manifold. A valve connected to control the application of braking pressure is normally held closed when the inertia wheel and manifold are rotated at the same rate by the wheel. When the vehicle wheel is decelerated at an excessive rate, the inertia wheel overcomes the bias of the spring and continues to rotate about the manifold to open the valve and prevent braking pressure from being applied to the wheel.
Claims22
In combination with a source of pressure for actuating a brake for decelerating a vehicle wheel and means for selectively applying the pressure to the brake,
- control means for permitting or preventing said pressure from being applied to the brake when the wheel is decelerated beyond a predetermined limit comprising:
- (a) a first rotatable member adapted to be fixedly attached to and rotated with said wheel and adapted to control said source of pressure, said first rotatable member being a manifold having an opening therein disposed between said source of pressure and atmosphere,
- (b) a second rotatable member movably mounted to said first rotatable member, said second rotatable member being an inertia wheel disposed to rotate with said manifold and to continue to rotate relative to said manifold when said manifold is decelerated beyond a predetermined rate,
- (c) valve means responsive to the relative positions of said first and second members with respect to each other disposed to close or open to control the pressure applied to said brake, and stop means for normally driving said first and second members during normal movement of said wheel and for limiting relative movement of said members during deceleration, said stop means further restricting relative movement of said members after limited movement there between,
- (d) means for maintaining the relative positions of said first and second members during normal rotation of said wheel to maintain said valve means closed to permit pressure to be applied to said brake,
- (e) said first and second members being relatively rotated with respect to each other to open said valve means when said wheel is decelerated beyond said predetermined rate to prevent pressure from being applied to said brake and biasing means connected between said members urging said valve means closed,
- (f) manual means for changing the relative position of said first and second rotatable members for manually checking the operation of said control means, said manual means comprising means normally free of said first and second rotational members and including frictional means for contacting one of said members to permit said one member to be rotated with respect to the other member to open said valve when said manual means are operated.
In combination with a source of pressure for actuating a brake for decelerating a wheel on a vehicle,
- control means for permitting or preventing the application of said pressure to said brake of said wheel, comprising:
- (a) a rotatable manifold member attached to be rotated with said wheel and including an aperture between a chamber leading to a second source of pressure and atmosphere,
- (b) an inertia wheel movably mounted to said manifold member to rotate within predetermined limits thereon during acceleration and deceleration of said wheel,
- (c) valve means included in said inertia wheel to close or open said aperture leading from said chamber to atmosphere,
- (d) stop means connected between said inertia wheel and said manifold member to normally rotate said inertia wheel at the same rate of speed as said manifold member and to normally maintain said valve means in a closed condition,
- (e) said stop means being disposed to permit continued movement of said inertia wheel with respect to said manifold member when said wheel is decelerated beyond said predetermined limit to open said valve means thereby to permit the pressure from said second source of pressure to be relieved through the aperture in said manifold member to atmosphere to prevent said braking pressure from actuating said brake.
Dependencies are inferred from the claim text.