| 摘要 |
1,225,335. Disc brakes. CARBORUNDUM CO. 16 June, 1969 [9 Aug., 1968], No. 30375/69. Heading F2E. A disc brake comprises at least one friction disc having an inner annular frictional member 21 with an aperture therein and an outer peripheral confining member 20 of metal, the member 21 being of carbon which is in compression at least when torque forces are applied during use. The disc may have an inner ring-like member of metal. As shown, the brake comprises discs 1, 2 respectively slidably keyed on a wheel hub (not shown) and a torque tube 12 secured to a torque plate 11 about the periphery of which are located hydraulic cylinders 15 having therein pistons 16 which urge a pressure plate 8 towards a thrust plate 6 whereby the discs are compressed together. The plates 6, 8 may have friction pads 10, 9 attached thereto. Spring means 17 attached to the plates 11, 8 retract the pressure plate 8 on completion of braking. The carbon member 21 may include non-carbon additives and consist of a reinforced carbon body formed from a plurality of carbon fibres or fabrics bonded by a carbon binder and derived from carbonization of carbonizable fibrous materials such as cellulosic fibres or fabrics. The member 20 may be shrunk on to the member 21 or the member 20 may be in the form of a split and hinged ring the open ends of which are secured together by bolting or welding and the ring being press-fitted about the member 21. Although the junction between the members may be circular, preferably, the junction is scalloped or irregular. |
