Invention Grant
US08172572B2 Dental tool displacement apparatus with slow rotational motion 失效
具有缓慢旋转运动的牙科刀具位移装置

  • Patent Title: Dental tool displacement apparatus with slow rotational motion
  • Patent Title (中): 具有缓慢旋转运动的牙科刀具位移装置
  • Application No.: US12545883
    Application Date: 2009-08-24
  • Publication No.: US08172572B2
    Publication Date: 2012-05-08
  • Inventor: Raphael Hof
  • Applicant: Raphael Hof
  • Applicant Address: IL Ra'anana
  • Assignee: Redent-Nova Ltd.
  • Current Assignee: Redent-Nova Ltd.
  • Current Assignee Address: IL Ra'anana
  • Agent Mark M Friedman
  • Main IPC: A61C1/02
  • IPC: A61C1/02 A61C1/07
Dental tool displacement apparatus with slow rotational motion
Abstract:
A dental tool displacement apparatus for use with a motorized power handle to displace a dental tool includes a tool holder having a receptacle for receiving the dental tool, and a drive arrangement. The drive arrangement defines a transmission from the motorized power handle to the tool holder such that the tool holder undergoes reciprocating motion parallel to the tool axis at a first frequency of oscillations per minute and rotates about the tool axis at a second frequency of rotations per minute. In some cases, the two types of motion are generated by an eccentric drive pin engaging an annular slot which has gear teeth along one side, thereby generating an angular rotation step of the tool holder during each reciprocating stroke. In some cases, the first frequency is at least one order of magnitude greater than the second frequency.
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