发明名称 Variable speed transmission for portable winch
摘要 The driving tension of a drive belt is maintained by axial force components applied to a pair of adjustable diameter pulleys about which the drive belt is entrained. A spring force is divided into such force components under control of relative torque loadings applied to the pulleys through drive shafts thereby also establishing a drive ratio that is automatically varied by relative adjustment of the pulley diameters.
申请公布号 US4566872(A) 申请公布日期 1986.01.28
申请号 US19840619309 申请日期 1984.06.08
申请人 BROCKELSBY, NORMAN D. 发明人 BROCKELSBY, NORMAN D.
分类号 F16H61/662;(IPC1-7):F16H7/08 主分类号 F16H61/662
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