| 摘要 |
A magnetic-tape-cassette apparatus provides a pulley (1, 21, 22) for a belt drive, particularly to a flywheel for a deck of the magnetic-tape-cassette apparatus. The pulley has a groove (10) at its circumferential edge (6, 7), in which groove a drive belt (11, 27) is engageable to drive the pulley. In order to manufacture such a pulley simply and cheaply, the pulley comprises a central disc (2) and a first (3) and a second (4) end disc. The first and the second end disc are shaped along their circumferences in such a manner that they form the groove in which the drive belt is engageable.
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