Patents by Inventor Bradley Sheldon

Bradley Sheldon 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).

  • Three prong plug with ground safety cutout
    Patent number: 7513782
    Abstract: A three-prong electrical plug includes a replaceable ground prong and circuitry inside the plug to preclude its functioning without the ground prong.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: April 7, 2009
    Assignee: Sure Ground L.L.C.
    Inventors: Bradley Sheldon, Walter M. Sheldon, Brad Davis, Trevor Sheldon
  • Portable filament dispenser
    Patent number: 6098911
    Abstract: A portable filament dispenser made of clear polycarbonate includes two hollow clam shell-like halves that are complementarily mated together. A spool of fine wire filament is rotatably positioned on a spindle in the hollow interior of the dispenser. The filament passes through a wiper near the front of the dispenser and exits through an orifice at the distal end of a hollow cone. The filament spool is sandwiched between two felt pads and positioned below a freely depressible button mounted through an aperture in the top clam shell half. As the filament is wound out through the orifice in the cone, the pressure of a single digit, i.e., a thumb, will maintain the filament at a desired tension while winding same between posts or around posts in a grid.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: August 8, 2000
    Inventor: Bradley Sheldon