Patents by Inventor Andrew Hal Walker

Andrew Hal Walker 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).

  • Alternatively slidable and stationary platform
    Patent number: 9220943
    Abstract: A portable platform is disclosed that may be switched from a sliding mode to a stationary mode and back again by retracting or extending pads from the underside of the device. The embodiments may be used for a variety of purposes, including moving heavy objects, and performing fitness routines.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: December 29, 2015
    Assignee: Andrew Hal Walker
    Inventor: Andrew Hal Walker
  • ALTERNATIVELY SLIDABLE AND STATIONARY PLATFORM
    Publication number: 20150111705
    Abstract: A portable platform is disclosed that may be switched from a sliding mode to a stationary mode and back again by retracting or extending pads from the underside of the device. The embodiments may be used for a variety of purposes, including moving heavy objects, and performing fitness routines.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Andrew Hal Walker