Caliper disk brake having easily removable linings

Claim 1

A disk brake for braking the rotation of a disk means, comprising a primary housing slidably mounted on a fixed foot at one side of the disk means, a brake piston disposed in a fluid powder chamber in the primary housing, a secondary plate disposed at an opposite disk means side, spacers of uniform cross-section interposed between the primary housing and secondary plate around the periphery of the disk means in spaced apart relation, the spacers being separable from the primary housing and from the secondary plate, bolts centered on a bolt circle of given radius extending at least partly through the primary housing, completely through the spacer means and at least partly through the secondary plate to join the primary housing, the spacer means and the secondary plate in a rigid unit, the separable spacers having a length sufficient to space apart the primary housing and the secondary plate sufficiently to accommodate therebetween any combination of brake pads having a predetermined total thickness and a disk means of predetermined thickness the fluid power chamber being oriented to actively force the piston toward one disk means side and reactively force the primary housing away from the disk to draw the rigidly connected secondary plate toward the opposite disk side, a plurality of unthreaded cylindrical pins of smooth circular cross-sectional shape extending across the disk means between the primary housing and secondary plate and mounted in holes of circular cross-section for quick sliding withdrawal therefrom at positions radially outside the disk means periphery but substantially on the bolt circle and circumferentially outside the spacers and bolts, a first brake pad interposed between the primary housing piston and one side of the disk means, a second brake pad interposed between the secondary housing and the opposite side of the disk means, both brake pads being provided with ears extending radially outwardly of the bolt circle and defining arcuate, opposed opensided recesses opening outwardly away from said pads and said spacers to permit removal of the brake pads from the brake when a single pin is withdrawn from the housing and the brake pads, nonear body portions of the pads being located radially inwardly of the bolt circle for contact with the brake disk means.