Patents by Inventor Henry R. Hardy

Henry R. Hardy 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).

  • Patent number: 5878471
    Abstract: A dental press apparatus for removing and installing a dental handpiece bearings includes a press having a frame having a base with a plurality of apertures therethrough for supporting a dental handpiece thereon and a push plate supported on the frame for pushing against items placed on the press. A spindle ram is attached to the push plate for removing the spindle in a dental handpiece turbine positioned on the base. A bearing ram is attached to the push plate for attaching a bearing to the dental handpiece turbine positioned on the base. A parts tray having an angled surface is removeably supported on the frame below the base for catching a turbine spindle passing through said base aperture after being removed from a dental handpiece turbine, so that a dental handpiece turbine bearing can be rapidly removed and replaced in press. The press includes a removable turbine chuck protector for the spindle ram. The frame has a plurality of suction cups and a drawer built thereinto to hold parts therein.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: March 9, 1999
    Inventor: Henry R. Hardy
  • Patent number: 5519928
    Abstract: A dental press apparatus for removing and installing a dental handpiece component includes a press having a frame and a driving member supported on the frame for pushing against items placed on the press. A jig is mounted in the press frame and has a base for supporting a dental handpiece thereon and has a push plate located above the base plate and slidably mounted for sliding towards the base plate responsive to actuation of the press to move the driving member against the push plate. The first ram member attaches to the jig push plate for removing a dental handpiece member and a second ram member is attached to the push plate and is used to install a bearing onto the dental handpiece turbine. The jig base plate and push plate are held together with rods having coil springs thereover and attached to the base plate and having the push plate sliding on the rod.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: May 28, 1996
    Inventor: Henry R. Hardy
  • Patent number: D361337
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: August 15, 1995
    Inventor: Henry R. Hardy
  • Patent number: D397123
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: August 18, 1998
    Inventor: Henry R. Hardy
  • Patent number: D426837
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: June 20, 2000
    Inventor: Henry R. Hardy