Patents by Inventor Bobbie G. Calmes

Bobbie G. Calmes 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: 4714224
    Abstract: A collapsible easel for artists and the like to support flexible or rigid drawing surfaces in various modes of operation comprising a composite outer leg unit joined co-axially to a similar composite inner leg unit that are pivotal from a collapsed co-planar position to extended operative positions within quadrant arcs, each having an upper and lower horizontal member and each a pair of parallel main legs which house correspondingly co-extendible auxiliary legs and individually extendible leveling legs which have releasable locking means providing height and leveling adjustment thereto, a stabilizer bar pivotally interconnected to one lower horizontal member extended in perpendicular alignment therefrom slidably and pivotally engaged to the other lower horizontal member having a releasable locking means to support the extended positions of the composite leg units, a translatable counter pivotal structure slidably and pivotally engaged perpendicularly to the upper horizontal member of the composite inner leg u
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: December 22, 1987
    Inventor: Bobbie G. Calmes