1
Gary B Young: Broom assisted pick-up head. Tymco, Diller Ramik & Wight PC, August 6, 1996: US05542148 (98 worldwide citation)

A pick-up head is formed by a housing which defines a broom chamber rearward of an associated air pressure chamber and its associated blast orifice. The broom is rotated in a direction to impel debris from a surface in the same direction as air emitted from the blast orifice toward an associated air ...


2
Gary B Young: Broom assisted pick-up head. Tymco, Diller Ramik & Wight PC, October 1, 1996: US05560065 (7 worldwide citation)

A pick-up head is formed by a housing which defines a broom chamber rearward of an associated air pressure chamber and its associated blast orifice. The broom is rotated in a direction to impel debris from a surface in the same direction as air emitted from the blast orifice toward an associated air ...


3
Gary B Young: Broom assisted pick-up head. Tymco, Diller Ramik & Wight P C, October 15, 1996: US05564147 (2 worldwide citation)

A pick-up head is formed by a housing which defines a broom chamber rearward of an associated air pressure chamber and its associated blast orifice. The broom is rotated in a direction to impel debris from a surface in the same direction as air emitted from the blast orifice toward an associated air ...



Click the thumbnails below to visualize the patent trend.