Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Patent
1976-08-18
1978-01-24
Yasich, Daniel M.
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
15DIG339, 55DIG34, 116114AD, B01D 4604, G01L 1912
Patent
active
040701700
ABSTRACT:
A combination dust container or bag for a vacuum cleaner and a signal indicator for alerting the user to the replacement of the dust bag. The communication between the interior of the dust bag and the signal indicator includes an air pervious part integral with the dust bag. The signal indicator also communicates with the enclosed area between the exterior of the dust bag and the interior of the vacuum cleaner housing. Furthermore, the signal indicator has a member which is movable therein as a result of the pressure difference between the interior and exterior of the dust bag.
REFERENCES:
patent: 2325188 (1943-07-01), Lofgren
patent: 3119369 (1964-01-01), Harland et al.
patent: 3392906 (1968-07-01), Fesco
patent: 3587515 (1971-06-01), Anderson
patent: 3678882 (1972-07-01), Kinsella
patent: 4020784 (1977-03-01), Greene
Aktiebolaget Electrolux
Miller Alfred E.
Yasich Daniel M.
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