Patents by Inventor Randall L. Forbrook

Randall L. Forbrook 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).

  • Patent number: 5240435
    Abstract: An apparatus for protecting an operator or maintenance person from electrical shock when working near power distribution facilities. The device is characterized by easily snapping off for access to the electrical circuitry and easily snapping on again to afford the desired protection. The shield is transparent providing the operator with visual access to the electrical circuitry at all times, even when the protective device is in place. The apparatus contains a transparent insulative plate attached to a suitable number of insulative clips. In the preferred mode, these clips are positioned to snap onto cartridge type fuses in a multiphase fuse panel. When snapped in place, the clips hold the transparent insulative plate between the electrical circuitry and the operator or maintenance person. Test points are drilled through the transparent insulative plate at appropriate locations to provide for the insertion of test probes when the protective device is in place.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: August 31, 1993
    Assignee: Progressive Systems, Inc.
    Inventor: Randall L. Forbrook