Gas separation: processes – Filtering
Reexamination Certificate
2005-04-05
2005-04-05
Hopkins, Robert A. (Department: 1724)
Gas separation: processes
Filtering
C055S429000, C055S486000, C055S503000, C055SDIG003, C096S415000, C095S287000
Reexamination Certificate
active
06875255
ABSTRACT:
A removable dirt separation system for a vacuum cleaner is disclosed. The dirt separation system includes a dirt cup having a number of outer walls having a first portion defined by a filter assembly and a second portion with a first translucent panel to allow viewing material which accumulates within the dirt cup. The dirt cup further includes a top opening allow emptying of the dirt cup and an inlet in fluid communication with a suction nozzle of the vacuum cleaner. The dirt separation system further includes a lid for sealing the upper opening of the dirt cup. The dirt separation system yet further include a dirt duct for routing air which exits the filter assembly to an exit opening of the dirt separation system. A method of operating a removable dirt separation system for a vacuum cleaner is also disclosed.
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Alford William G.
Balzer Jerry L.
Bilek Greg A.
Garisto Joseph A.
Kumpf David C.
Hopkins Robert A.
Lowe A. Burgess
Morrison John W.
The Hoover Company
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