Patents by Inventor David L. Ballard

David L. Ballard 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).

  • Outdoor Light Fixture Apparatuses and Methods For Locating and Identifying Markers of Interest
    Publication number: 20130155663
    Abstract: Apparatuses and methods described herein may allow markers of interest to be located and identified according to an industry and item of interest. In one embodiment, an outdoor light fixture apparatus comprises a housing comprising a mounting surface and a top surface, a solar panel affixed to the top surface of the housing, a mounting mechanism affixed to the mounting surface, and a rechargeable battery positioned within the housing.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 20, 2013
    Inventor: David L. Ballard
  • Golf club head with removable insert
    Patent number: 6224496
    Abstract: A golf club for imparting a desired spin to a golf ball. The golf club includes a club head having a cavity formed in its club face for securing a removable insert. The insert includes a striking face with a preferred frictional surface for imparting spin to a golf ball.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: May 1, 2001
    Assignee: The Spin Doctor, Ltd.
    Inventors: Michael L. Rowland, David L. Ballard
  • Removable adhesive backed pads for golf club striking surfaces
    Patent number: 5690561
    Abstract: A two-sided removable pad for use on a golf club having a substantially planar club face surface for striking a golf ball. A ball contact surface having a plurality of ridges effects the rotation of a struck golf ball. An adhesive on a second side of the pad for application to the club face. The pad is easily removably adhered to the club face surface.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: November 25, 1997
    Assignee: The Spin Doctor, Ltd.
    Inventors: Michael L. Rowland, David L. Ballard
  • Removable adhesive backed pads for golf club striking surfaces
    Patent number: 5688190
    Abstract: A device for use on a golf club having a substantially planer club face surface for striking a golf ball. The device is a two-sided removable pad having a ball contact surface on a first side which includes a plurality of ribs to impart back spin to a struck golf ball. Each rib has a multitude of peaks and valleys, each said valley connecting to an adjacent peak by an inclined surface and to another adjacent peak by a horizontal surface. The pad has an adhesive coating on a second side for temporary application to the golf club surface.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: November 18, 1997
    Assignee: The Spin Doctor, Ltd.
    Inventors: Michael L. Rowland, David L. Ballard