Patents by Inventor John W. Dulin

John W. Dulin 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).

  • Adjustable wheel assembly for pool vacuums
    Patent number: 5249324
    Abstract: An adjustable wheel assembly for varying the height of a pool vacuum head above the bottom surface of a pool includes a wheel mounted rotatably on an axle which is in turn mounted on a pair of axle mounts to the body of the vacuum head. The axle mounts themselves are also rotatably mounted between a pair of spaced arm members. The axle is mounted spaced away from the axis of rotation of the axle mounts in a manner to vary the vertical position of the axle with respect to the body as the axle mounts are rotated. A cooperating tab and notch arrangement secures the axle mounts into a selected position to prevent rotation of the axle mounts during normal use of the pool cleaning apparatus.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: October 5, 1993
    Assignee: A. J. Giammanco & Associates, Inc.
    Inventors: Angelo J. Giammanco, John W. Dulin