Patents by Inventor Robert B. Gates

Robert B. Gates 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: 4016955
    Abstract: The invention comprising a ladder formed into two sections with one section mounted at its end to the other section and with the other section overlapping so that the sections may be straightened out and used as a straight ladder or folded into a step ladder. Locking means are provided to lock the ladder sections when folded into a step ladder. A paint carrier plate having a center opening so that the paint carrier plate may be slipped over the top of the step ladder and slid downward to rest on the locking means. The paint carrier plate also has a pair of fixed hooks and a pair of pivotally mounted hooks with the hooks being attachable to the rungs of the ladder to attach the paint carrier plate at different heights on the rungs of the ladder.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: April 12, 1977
    Inventor: Robert B. Gates