发明名称 Watch drive
摘要 A watch drive has an electric stepping motor and other drive elements supported between opposite drive plates. A tubular center bearing is mounted on one of the drive plates and carries a watch hand shaft to which motion is transmitted from the stepping motor by way of an intermediate gear which is mounted on an intermediate gear shaft supported in a bearing projection extending from a mounting collar of the tubular center bearing. The bearing projection is disposed adjacent a cut-out area of the drive plate which cut-out area is sufficiently large to permit insertion of the small drive elements between the drive plates during assembly of the watch drive and to provide for the small size of the watch drive.
申请公布号 US4652142(A) 申请公布日期 1987.03.24
申请号 US19860849720 申请日期 1986.04.09
申请人 PFORZHEIMER UHREN-ROHWERKE PORTA GMBH 发明人 RUPPRECHT, GERHARD
分类号 G04B31/00;(IPC1-7):G04B29/00 主分类号 G04B31/00
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