G - Physics
11
B
352/24.2
G11B 15/28 (2006.01)
Patent
CA 1096038
ABSTRACT OF THE DISCLOSURE The present invention is an improved capstan which is used in n magnetic tape transport system, to accelerate a length of magnetic tape The capstan includes a cylindrical post, adapted to be connected to a drive shaft of a capstan motor in a magnetic tape transport system, a pair of discs, each of which has a set of outer holes disposed adjacent to and distributed about its periphery and a set of inner holes disposed adjacent to and distributed about its central axis, coupled together by the cylindrical post disposed about their central axes. The capstan also includes a first set of cylindrical posts, coupling the inner holes of one disc to the inner holes of the other disc, and a second set of cylindrical posts, coupling some of the outer holes of one disc to some of the outer holes of the other disc. The capstan further includes a cylindrical tape band, which has a set of grooves running concentrically with the discs and the other edges of which are joined to the peripheries of the discs The capstan is formed by a two step process of plating a platen in the shape of the capstan with a metal, such as nickel, and then dissolving or etching away the platen in a selected solution. The resulting capstan not only has a relatively large diameter with c low moment of inertia, but also a low mass without sacrificing its structural strength.
291504
Glaeser George Jr.
O'neill Daniel R.
Painter Alan
Smart & Biggar
Telex Computer Products Inc.
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