Abstract: A disc brake assembly for a vehicle having a caliper mounted to a non-rotating structure of the vehicle and a housing mounted to a rotating structure of the vehicle fixedly connected to a rotor within the housing. A pressure plate and a pair of annular brake discs on each side of the rotor and extending parallel to the rotor are disposed within the housing and mounted to the caliper for axial movement into the pressure plate. At least one annular brake disc is axially moveable by a hydraulically or pneumatically urged annular piston disposed in caliper.

Abstract: A blood sample incubation device to maintain a blood sample or the like at a fixed temperature receives a test tube bearing the sample in a flexible, elastic, eversible finger-like sleeve which surrounds the test tube and grips the exterior surface of the test tube completely about its outer surface. The sleeve is mounted within a well formed in a heater block and the well contains a heat conductive fluid. In operation, the tube or cuvet filled with the sample is inserted into the sleeve which is surrounded by the fluid within the well so that heat may pass from the block through the fluid to the test tube and blood sample. When the test tube is removed, it draws the sleeve with it to cause the sleeve to evert and protrude upwardly from the heater block to a position in which the sleeve is ready to receive the next test tube.