Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
1999-04-27
2001-01-30
Moore, Chris K. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S323000, C015S326000
Reexamination Certificate
active
06178591
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to cleaning devices, and in particular, to a vacuum cleaner module for positioning in a window wherein components of the module that are under positive pressure are outdoors and components of the module that are under vacuum are indoors.
BACKGROUND OF THE INVENTION
Conventional vacuum cleaners are designed to satisfy many requirements. Some ofthe more significant requirements include convenience, weight, cleaning thoroughness, appearance, and cost.
Unfortunately, these vacuum cleaners are extremely noisy and generate considerable afterdust that escapes through the filter pores and causes headaches and sinus infections in some individuals. Moreover, conventional vacuum cleaners require undesirable cleaning or replacement of the collector bags or tanks and are awkward, relatively heavy and often expensive.
Serious efforts have been made to address some of these problems, particularly by introducing multiple filters, electrostatic filters and the like to deal with afterdust. This has undesirably increased the size, cost and power requirements of these vacuum cleaners, without completely solving the afterdust problem or resolving the other problems. Additionally, the larger and heavier vacuum cleaners include self-propelling mechanisms which add to the cost and size of the vacuum cleaner.
Accordingly, there is a continuing need for a vacuum cleaner which effectively addresses the above problems.
SUMMARY OF THE INVENTION
A vacuum cleaner module comprising vacuum blower means and a support assembly for positioning in an opening defined between a movable window and a corresponding window sill of a building. The support assembly mounts the blower means outside the building adjacent to the movable window and the window sill when the support assembly is positioned in the opening.
Some embodiments of the vacuum cleaner further comprise dust separation means communicating with the vacuum blower means for reducing emission of dust from the vacuum blower means. The dust separation means can include vacuum blower outlet noise suppression means for reducing noise emitted from the vacuum blower means.
Other embodiments of the vacuum cleaner module further comprise suction noise attenuation means for attenuating suction noise generated by the vacuum blower means.
REFERENCES:
patent: 2270579 (1942-01-01), Chamberlin et al.
patent: 2595752 (1952-05-01), Batts
patent: 2635278 (1953-04-01), Belknap
patent: 3505791 (1970-04-01), Breslin
patent: 3705437 (1972-12-01), Rukavina, Jr. et al.
patent: 4222318 (1980-09-01), Patton et al.
patent: 4267618 (1981-05-01), Cuscovitch
patent: 5382136 (1995-01-01), Wang
Buchanan & Ingersoll PC
Moore Chris K.
Plevy Arthur L.
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