Patents by Inventor Leonid I. Maizenberg

Leonid I. Maizenberg 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).

  • Ball type bur gripping mechanism for dental handpiece
    Patent number: 4575338
    Abstract: A dental handpiece head having a bur-gripping mechanism which includes a spring-loaded ball carrier urged by the spring into operative engagement with a tapered ramp which in turn forces the several balls into clamping engagement with the shank of a dental bur positioned in the central bore of the ball carrier. The balls bite into the shank providing positive engagement. Downward force applied to the ball carrier against the spring, by a cam lever or by a pushbutton, releases the engagement.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: March 11, 1986
    Assignee: Sybron Corporation
    Inventor: Leonid I. Maizenberg
  • Lever actuated chuck mechanism for dental handpiece
    Patent number: 4536157
    Abstract: In a dental handpiece, a drawback bur chuck actuable to open by a cam lever mounted atop the handpiece head and acting axially downward on the chuck against a spring which urges the chuck upward into clamping engagement with a bur shank when the cam lever is in its closed position. The cam lever is rotatable on the axis of the chuck to a position to suit the convenience of the user. The chuck is removable for cleaning and positive means are provided to prevent over travel of the chuck to thereby prevent its permanent deformation.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: August 20, 1985
    Assignee: Sybron Corporation
    Inventor: Leonid I. Maizenberg