Patents by Inventor Leonard Rothstein

Leonard Rothstein 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).

  • Fiber filling system
    Patent number: 4664160
    Abstract: A fiber filling system features a picking device for separating clumped fiber, that feeds to an air and fiber circulation chamber. The circulation chamber aerates and fluffs the separated fiber into a fibrous billow, which is then discharged to a stuffing chute. A stuffable article, such as a toy, pillow, or furniture cushion casing is attached to the chute and is filled with the fibrous billow in a metered amount.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: May 12, 1987
    Assignee: Ormont Corporation
    Inventors: Leonard Rothstein, Bernard Brown