发明名称 Multi-pitch screw, multi-pitch nut, feed screw device using the screw and nut, and method of producing the nut
摘要 A flat portion 12 a and a slope portion 12 b are provided on a thread 12 of a multi-pitch screw 10 alternately. The flat portion and the slope portion are provided on the thread of a multi-pitch nut which fastens with this. Consequently, a screw and a nut capable of preventing loosening securely by step are achieved. This enables comfortable and quick feeding and when a torque from a driving source is interrupted, step-like self-lock is activated.
申请公布号 US2005141983(A1) 申请公布日期 2005.06.30
申请号 US20040508773 申请日期 2004.09.22
申请人 FUJII HIROSHI;SUGIYAMA KATSUHIRO;MITSUKUCHI MASASHI;KATAYAMA KENICHI;MORIGUCHI YOSHINORI 发明人 FUJII HIROSHI;SUGIYAMA KATSUHIRO;MITSUKUCHI MASASHI;KATAYAMA KENICHI;MORIGUCHI YOSHINORI
分类号 F16B33/02;F16B39/30;F16H25/24;(IPC1-7):F16B39/30 主分类号 F16B33/02
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