Patents by Inventor Louis A. Rotola, Jr.

Louis A. Rotola, Jr. 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).

  • Vacuum cleaner upper hose assembly
    Patent number: 4856139
    Abstract: An upper hose assembly for an upright vacuum cleaner is arranged with external threads at one end for connection into the dirt collecting portion intake duct while the other end of the hose has mounted thereon a connector which allows for a snap-fit connection/disconnection from the fan discharge port of the vacuum cleaner. The connector is designed to provide a retrofit adaptation to an existing vacuum cleaner.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: August 15, 1989
    Assignee: Ryobi Motor Products Corp.
    Inventors: James A. Matthews, Louis A. Rotola, Jr.
  • Dirt drawer latch for vacuum cleaner
    Patent number: 4705547
    Abstract: A latch device for a filter bag supporting tray comprising a plurality of latch bolts operatively interrelated to move together so that blockage of any latch bolt will result in prevention of any other bolt from entering its latch recess, and only secure fully latched constraint of the tray is possible.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: November 10, 1987
    Assignee: The Singer Company
    Inventors: Louis A. Rotola, Jr., Gordon E. Laing
  • Upright vacuum cleaner
    Patent number: D296487
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: June 28, 1988
    Assignee: The Singer Company
    Inventors: Stephen R. Burns, Louis A. Rotola, Jr.