Patents by Inventor John P. Haydu

John P. Haydu 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).

  • Top-adjusting leveling foot
    Patent number: 8684324
    Abstract: A top-adjusting leveling foot for installation on the leg of an object has an adjustment knob, an adjustment knob base with a bottom cavity and a non-circular passage extending axially through the center of the adjustment knob base, a threaded bushing with a top annular flange held within the bottom cavity of the adjustment knob base, and a drive stud assembly including a foot and a drive bar that has a lower threaded portion for engaging a partially threaded interior passage of the threaded bushing, and an upper bar portion sized and configured for engagement with the non-circular passage through the adjustment knob base. Rotation of the adjustment knob in a first direction axially advances the drive bar and lowers the foot and rotation of the adjustment knob in the opposite direction axially retracts the drive bar and raises the foot.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: April 1, 2014
    Inventors: John P. Haydu, Earl H. Covert
  • TOP-ADJUSTING LEVELING FOOT
    Publication number: 20130048805
    Abstract: A top-adjusting leveling foot for installation on the leg of an object has an adjustment knob, an adjustment knob base with a bottom cavity and a non-circular passage extending axially through the center of the adjustment knob base, a threaded bushing with a top annular flange held within the bottom cavity of the adjustment knob base, and a drive stud assembly including a foot and a drive bar that has a lower threaded portion for engaging a partially threaded interior passage of the threaded bushing, and an upper bar portion sized and configured for engagement with the non-circular passage through the adjustment knob base. Rotation of the adjustment knob in a first direction axially advances the drive bar and lowers the foot and rotation of the adjustment knob in the opposite direction axially retracts the drive bar and raises the foot.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 28, 2013
    Inventors: John P. Haydu, Earl H. Covert
  • Extended thumb grip on an ultra sonic dental scaler
    Patent number: D536451
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: February 6, 2007
    Inventor: John P. Haydu