Patents by Inventor Alonzo N. Zaugg

Alonzo N. Zaugg 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: 4074792
    Abstract: A strong lightweight hanging scaffold for four or more workmen with heavy materials has a wide range of adjustability adapting it for a variety of uses on many types of one and two story buildings including buildings with gable ends. The scaffold features strong top and bottom truss arms or beams which are vertically adjustable on end vertical ladder-type frames. A sturdy walkway of box form has a non-slip metal walking surface and may be employed in both level and inclined positions while resting on the bottom truss arms. Top spiked engaging bars of the upper truss arms have swiveled connections therewith so as to be compatible with various roof contours. The lower truss arms have extension bars with feet adapted for stable engagement with building walls.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: February 21, 1978
    Inventors: Alonzo N. Zaugg, Richard W. Ellis