Patents by Inventor Derek M. J. Turner

Derek M. J. Turner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adjustable tool drive arrangement
    Patent number: 7815433
    Abstract: The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: October 19, 2010
    Assignee: TTI Turner Technology Instruments Inc.
    Inventors: Kevin John Bailey, Andrew Douglas Millson, Derek M. J. Turner, Jean Castonguay