Patents by Inventor Joseph C. Sindelar

Joseph C. Sindelar 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: 4171116
    Abstract: An adjustable and collapsible easel having a plurality inner and outer telescoping leg sections. The upper ends of the outer leg sections are connected to a common connecting member for articulated movement between fully spread and fully folded positions. The outer ends of a plurality of foldable brace members are connected to respective ones of the outer leg sections and the inner ends of the brace members are connected to a common fitting. The brace members reinforce and hold the legs in an operative, spread position. Cam surfaces on the outer ends of the brace members engage and prevent telescoping movement of the inner leg sections relative to the outer leg sections when the legs are in either fully spread or fully folded positions. The length of the legs and locking of the same in their operative, fully spread position is effected by depressing the fitting which interconnects the inner ends of the brace members.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: October 16, 1979
    Assignee: Beckley-Cardy Company
    Inventors: George E. Carver, Joseph C. Sindelar