Patents by Inventor Sandra F. Butler

Sandra F. Butler 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: 4998699
    Abstract: A bootie is provided for an office chair that has legs mounted on a shaft and rollers attached to the legs. The bootie has a top member and a skirt. The top member defines an opening for the chair shaft to pass through. The top member extends from the shaft along the leg. The skirt is connected to the top member and extends downwardly toward the wheel. The skirt is spaced from the bottom of the wheel a preselected distance. The skirt and top member form a cavity in which the chair legs and rollers fit to insulate the users shoes from contact with the rollers.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: March 12, 1991
    Inventor: Sandra F. Butler