Patents by Inventor Jeffrey W. Eisner

Jeffrey W. Eisner 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).

  • Tool for removing mandrel mounted disks
    Patent number: 4491041
    Abstract: A base supported tool having a holder with one jaw of the holder slidably carrying a screwdriver. The remaining jaw is recessed to receive the mandrel of a powered handpiece. A plate on the jaw is also recessed and has flats to engage flats on the mandrel to hold the latter against rotation during removal of a mandrel screw. A pin supports the plate for limited rocking motion to facilitate mandrel entry into the recess. The holder may pivot also for the purpose of mandrel entry into the plate recess.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: January 1, 1985
    Inventor: Jeffrey W. Eisner
  • Dental dowel pin placement apparatus
    Patent number: 4243389
    Abstract: A dowel pin holder having an elongate base horizontally positionable within a dental impression. A guide for installation of the base is temporarily positionable above the specific tooth impression and guides the inserted base into precise position above the tooth impression. A dowel pin holder is positionable along the elongate base as is a slidable indicator for the dowel pin holder.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: January 6, 1981
    Inventor: Jeffrey W. Eisner