Air disc brake for a road vehicle
AssigneeMei Brakes Limited
InventorsPaul Roberts, Jonathan Jackson, Adrian Kinder
Life of this patent
Estimating the term…
Abstract
An air disc brake for a road vehicle is proposed, having a mechanism for causing retraction of the brake pads when the brakes are no longer applied, to avoid parasitic drag caused by continued contact of the brake pads against the brake disc. The proposed mechanism includes a pin located in a fixed position relative to one brake pad, and extending through an aperture in the other brake pad. A coil spring is supported on the pin, and pushes the brake pads apart. Where the pin extends through the aperture the extent of the pin provides an indication of the wear state of the pads and disc, which is visible through apertures in the wheel rim.
Claims19
A sliding caliper air disc brake comprising:
- a brake disc;
- a brake carrier;
- a brake caliper slidably mounted on the brake carrier;
- a first brake pad assembly slidably mounted to the brake carrier on an inboard side of the brake disc, and a second brake pad assembly slidably mounted to the brake carrier on an outboard side of the brake disc, each brake pad assembly including a support plate and a friction material fixed to the support plate;
- at least one pin marked with at least one marking for indicating a wear state of the brake pads, the pin being located in a fixed position relative to the first brake pad assembly, and extending towards and being slidable through an aperture in the second brake pad assembly, and a spring supported on the pin for urging the first brake pad assembly away from the second brake pad assembly.
A sliding caliper air disc brake comprising:
- a brake disc;
- a brake carrier;
- a brake caliper slidably mounted on the brake carrier;
- a first brake pad assembly slidably mounted to the brake carrier on an inboard side of the brake disc, and a second brake pad assembly slidably mounted to the brake carrier on an outboard side of the brake disc, each brake pad assembly including a support plate and a friction material fixed to the support plate;
- at least one pin, the pin being located in a fixed position relative to the first brake pad assembly, and extending towards and being slidable through an aperture in the second brake pad assembly, and a spring supported on the pin for urging the first brake pad assembly away from the second brake pad assembly, in which a location clip is provided, the location clip including an apertured portion which surrounds the pin, at a point along the pin which is between the two brake pad assemblies, and in which the location clip is fixed to the brake carrier.
Dependencies are inferred from the claim text.