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公开(公告)号：US20170035530A1
公开(公告)日：2017-02-09
申请号：US15333890
申请日：2016-10-25
Applicant: J. MORITA MFG. CORP.
Inventor： Hitoshi TANAKA , Shozo NAKAYAMA
CPC classification number: A61C1/185 , A61B17/00 , A61B17/32002 , A61C1/06 , A61C1/12 , Y10T74/19679
Abstract: A medical or dental handpiece has a grip. The grip includes first to third rotation shafts. The first and second shafts are connected through a first gear mechanism and the second and third shafts are connected through a second gear mechanism so that a rotation is transmitted from the first shaft through the first gear mechanism to the second shaft and then from the second shaft through the second gear mechanism to the third shaft. The first or second gear mechanism has an internal gear secured on one shaft and an external gear secured on the other shaft, the internal and the external gears being engaged with each other. The external gear is substantially enclosed within a cylindrical plane extending along a peripheral edge of the internal gear.
Abstract translation: 医疗或牙科手机具有抓地力。 手柄包括第一至第三旋转轴。 第一轴和第二轴通过第一齿轮机构连接，第二和第三轴通过第二齿轮机构连接，使得旋转从第一轴通过第一齿轮机构传递到第二轴，然后从第二轴 通过第二齿轮机构到第三轴。 第一或第二齿轮机构具有固定在一个轴上的内齿轮和固定在另一轴上的外齿轮，内齿轮和外齿轮彼此接合。 外齿轮基本上封闭在沿着内齿轮周边延伸的圆柱面内。
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公开(公告)号：US20220361981A1
公开(公告)日：2022-11-17
申请号：US17765713
申请日：2020-08-21
Applicant: J. MORITA MFG. CORP.
Inventor： Hitoshi TANAKA , Tomoya MURATA , Shozo NAKAYAMA
Abstract: Provided is a dental handpiece capable of rotating a cutting tool at a high speed as compared with a conventional dental handpiece. A dental handpiece including coupling portion, a body, and a neck to be held by a used and a head connected to them, wherein the head includes a tool rotating mechanism that holds a cutting tool for treating a region to be treated, rotates based on rotation of a drive unit that is rotationally driven, and rotates the cutting tool, and the tool rotating mechanism has a rotation speed of at least 5.5 times or more a rotation speed of the drive unit.
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