Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2008-05-13
2008-05-13
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
Reexamination Certificate
active
07370390
ABSTRACT:
A pivot connection for connecting the wand of a vacuum cleaner hose to a vacuum cleaner nozzle of the type having an exhaust aperture through which air is drawn into a vacuum hose. A three-sided curved duct extends upwardly from a top surface of the nozzle, the duct having a transverse generally rectangular cross section with a curved front wall and contiguous laterally opposed side walls. The front wall and side walls have lower portions surrounding the exhaust aperture on three sides, upper ends defining a generally rectangular open end disposed in an angular plane with respect to a vertical axis, and interior surfaces forming an arcuate extension of the exhaust aperture. A hose connector member is pivotally mounted on the nozzle and has an elongate tubular portion with a generally rectangular flange at a lower end sized and shaped to engage the interior surfaces of the duct in a sliding air-sealing relation, and a central longitudinal bore dimensioned to receive and frictionally engage a tubular wand attached to one end of a vacuum hose. The hose connector is pivotal in a vertical plane about a horizontal axis between a lowermost position and an uppermost position relative to the nozzle and the duct.
REFERENCES:
patent: 4091496 (1978-05-01), Desrosiers et al.
patent: 4564972 (1986-01-01), Varin
patent: 0353546 (1989-07-01), None
Redding David A
Roddy Kenneth A.
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