Patents by Inventor Marvin H. Wardell

Marvin H. Wardell 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: 5020722
    Abstract: A mounting and placement system for the periodic and manual placement of one or more sprinkler heads around a yard or other area that needs periodic watering, said sprinkler heads being advantageously made in accordance with conventional designs. A shank or spike depends from the body of such water sprinklers, said spike being downwardly tapered to a point. A plurality of generally tubular anchor members are sized and configured to telescopically receive the spike of the sprinkler. The lower end of the anchor member is squeezed together to form a more narrow, bladelike shape to foster entry into the ground. To ensure that the top of the anchor member is not damaged by any axial blows as it is being driven into the ground, an impact-resistant plug may be temporarily placed in the open top of the anchor member. But the lower end is left partially open so that rain water and the like may drain from the anchor member.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: June 4, 1991
    Inventor: Marvin H. Wardell