Patents by Inventor William E. Jackman

William E. Jackman 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: 5025120
    Abstract: An insert for a hydro pole switch is disclosed. The insert has a rod member extending the length of a hydro pole and terminating at a handle. The rod member is formed from spaced inline rod portions with adjacent end portions separated by a predetermined spacing. The insert has an element formed from electrically insulating material having a first flange mounted on each end thereof; a pair of coupling members are provided for engagement with the first flanges and each are attachable with a corresponding end portion, whereby the insert enables the handle to be electrically isolated from its associated switchgear in a simple and economic manner.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: June 18, 1991
    Inventor: William E. Jackman