Patents by Inventor John Haddock

John Haddock 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).

  • Alarming plumbing screen
    Patent number: 7096516
    Abstract: A plumbing screen is provided having an annular seal that is adapted to fittingly conform to the internal surface of a toilet drain. The annular seal circumscribes a central screen that provides free fluid communication down the toilet drain but provides physical impingement for obstructions. At least one contact switch is located in the outer seal wall and controls an annunciator module that will provide an audible alarm upon removing the contact between the switch and the toilet sidewall. This audible alarm will indicate tampering with or removal of the screen.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: August 29, 2006
    Inventors: Allen Moore, Jr., John Haddock
  • Chalk holder and scuff gauging device
    Patent number: 5046728
    Abstract: A chalking and scuffing device for use on a pool or billiard cue is described. The device includes in combination a plate member having a serrated scuffing surface on a portion of one face and a chalk holder having a magnetic base for detachably securing to the plate member. The device also includes a means for securing it onto the clothing of the user.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: September 10, 1991
    Inventor: John Haddock