Patents by Inventor James L. Grosh

James L. Grosh 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: 3974599
    Abstract: An underground reinforced plastic enclosure comprising a vertically and circumferentially stiffened body. The body is made of a fiberglass polyester resin and the stiffeners are of a reinforced plastic mortar. The body is suitable for surrounding a transformer or an oil switch used in underground utilities. On the body is seated a top cap made of reinforced plastic mortar. The top cap is formed with a central opening. Seated on the top cap is a reinforced plastic mortar cover plate or a metal grate. Depending from the top cap is a fiberglass polyester resin baffle and tamper shield. The body seats on a base of reinforced plastic mortar. A grade adjustment skirt also depends from the top cap outwardly from the baffle and tamper shield.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: August 17, 1976
    Assignee: Indian Head Inc.
    Inventor: James L. Grosh