Patents by Inventor Tzvetanka Balabanova

Tzvetanka Balabanova 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: 4493492
    Abstract: The present invention relates to a foldable multifunctional carriage, particularly for use in performing cleaning and maintenance tasks in hospitals, of the type comprising rollers on which are mounted a rigid portion and a foldable framework which can be placed either in an operative unfolded position or in an inoperative folded position.The carriage is characterized in that said rigid portion consists of a chassis (2) horizontally resting on said rollers (3), and in that said framework (1) has a pair of arms (4, 5) pivotally mounted on a front portion of said chassis (2), a U-shaped frame (7) being pivotally mounted between said pair of arms so as to form a strut adapted to abut against a stop (12) integrally formed with said chassis (2) to secure said framework (1) in its unfolded position, said pair of arms (4, 5) carrying, therebetween, if desired, one or more support members (8, 36, 37) for articles or utensils to be carried on the carriage.
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: January 15, 1985
    Inventor: Tzvetanka Balabanova