| 摘要 |
1,132,346. Brake friction elements; disc brakes. LAMBERT BRAKE CORP. 10 Dec., 1965 [21 April, 1965], No. 52584/65. Heading F2E. [Also in Division B3] In an aircraft disc brake having stator discs 12 and rotor discs 14 all of which are provided on both disc faces with friction elements, each friction element comprises a laminate formed by separately sintering an outer layer 52, Fig. 3, of a mixture of metallic and non- metallic material, e.g. including iron, ceramic and graphite particles, and an inner layer of metal, e.g. iron particles only, and then placing the layers together and again sintering to bond them, the resulting laminate being bonded to its base 46 (i.e. the associated disc 12 or 14), which is of beryllium or similar lightweight material of high heat conductivity, high specific heat and high melting point, by further heat treatment, through the intermediary of a thin layer of silver solder or brazing metal 56, the base 46 having an electrodeposited coating of silver 47 whereby application of light pressure and relatively gentle heat is sufficient to produce a secure bond. The friction elements are sector shaped, a number being distributed around both faces of each disc 12 or 14. The prepared discs are arranged conventionally to engage respectively splines on an axle sleeve 20 and ribs on a wheel 30. They are compressed between metal segments 24, also having friction elements 25 and secured to an axle flange 22, and a primary disc 42, having metal segments 44 with friction elements 45, by operation of a fluid-pressure device comprising either, as shown, a number of circumferentially arranged cylinders 38, which may be hydraulically or pneumatically operated or a combination of both, simultaneously or separately, or alternatively by an annular cylinder, the pistons or piston in either case bearing directly on the disc 42. Figs. 5-9 (not shown), illustrate the successive steps in moulding, sintering and finally soldering the disc/friction element assemblies. |
