Patents by Inventor Howard E. Donahey

Howard E. Donahey 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: 5165501
    Abstract: A multiple use ladder support attachment (M.U.L.S.A.), for hollow rung ladders, designed to pivot and lock a pair of arms (with a support plate across one end) so as to offset and support a ladder top from a roof of any slope (pitch) or to pivot the support plate upward and support the ladder top a selectable distance from a vertical wall or to further pivot upward and place the support plate between the ladders rail tops and any fragile siding to protect the siding from damage.A pair of adjustable length pivotal upper arms connected to a pair of adjustable length pivotal lower arms. The upper arms control the distance from ladder to support plate while the lower arms control the angle of the upper arms (and support plate). The pivotal action allows a simple change from one support position to another.A second configuration uses an optional support plate to support the ladder top from the peak of a roof.In a third configuration, the M.U.L.S.A.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: November 24, 1992
    Inventor: Howard E. Donahey