| 摘要 |
<p>875,823. Semi-conductor devices; mounting terminals. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 21, 1959 [Sept. 25, 1958], No. 32019/59. Classes 37 and 38 (1). A semi-conductor unit 21, Fig. 1, e.g. a diode or transistor, is hermetically sealed within an envelope member 11 by a lead member 23, electrically connected to unit 21 through a contact spring 27, and a gasket member 29 of insulating material such as glass or glass reinforced resin which engages sloping support surfaces 17, 25 of the envelope member 11 and the lead member 23 respectively, and is held in position thereon by clamping means formed by the deformation of the rim 19 of the envelope member and by the shearing away and bending over of an annular part 28 of the lead member, the gasket member and the clamping means finally being covered with a coating 31 of insulating material such as a siloxane resin, an epoxy resin of the type described in Specification 794,541, or a material made from powder glass. The contact surfaces of the lead member 23, the spring 27, and the unit 21 may be tin plated, and the unit may be surrounded by an insulating washer. The external surface of the envelope member 13 may be threaded, or a threaded protrusion may be provided on its base. Fig. 3 shows an embodiment in which the support surfaces of the envelope member and the lead member which engage the gasket member 29 are formed by ledges 41, 43. An insulating washer may be placed between the gasket member and the ledges. The clamping portion 28 of lead member 23 is deformed over the gasket member 29, before or after its insertion into the envelope, by a cylindrical die 51 which comprises a cutting edge 55 for shearing the lead member. A second die 53 deforms the edge 19 of the envelope on to the gasket.</p> |
