Patents Assigned to Nakanishi Dental Mgf. Co., Ltd.
  • Dental handpiece having rotatable contact member
    Patent number: 5518398
    Abstract: A dental handpiece contains a tool for dental treatment operation, tool holding members for detachably and rotatably holding the tool, tool detachment members for abutting against the tool holding members to detach the tool from the tool holding members, and rotatable contact members capable of being point-contacted with the tool holding members. The rotatable contact members when contacted with the tool holding members is rotatable with the tool holding members.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: May 21, 1996
    Assignee: Nakanishi Dental Mgf. Co., Ltd.
    Inventors: Eiichi Nakanishi, Sosaku Kawata, Yuichi Shibata