Patents by Inventor Harold J. Eldred

Harold J. Eldred 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: 5725070
    Abstract: Disclosed herein is an apparatus for facilitating vertical entry into a confined entry space such as a manhole. The apparatus includes a trailer-type base, a support frame formed on the base for supporting a hoisting device, and stabilizing posts for stabilizing the support frame. The apparatus preferably also includes a barricade mounted on the base for preventing accidental entry into an area beneath the support frame, and can include a support arm for vertically transporting a weight over an edge. The apparatus provides for convenient entry into a manhole by a worker while preventing accidental entry by a pedestrian, and also can be used for raising and/or lowering persons and/or objects over the edge of a wall, cliff, or pit.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: March 10, 1998
    Inventor: Harold J. Eldred