Gas separation – Flexible or collapsible bag type – Spaced interior inflow path or with means modifying gas flow...
Patent
1984-04-30
1985-04-30
Nozick, Bernard
Gas separation
Flexible or collapsible bag type
Spaced interior inflow path or with means modifying gas flow...
55374, 55381, 55473, 383904, B01D 4602
Patent
active
045142009
ABSTRACT:
A floor care appliance having a filter bag with an inlet chamber accessed by an inlet aperture, and a quiescent storage chamber connected to the inlet chamber by an opening adjacent the top thereof. The filter bag is formed of filter sheet material as an elongate tubular member having the opposite ends folded and sealed to define an air impermeable seal. An inlet aperture extends into the interior of the tubular member adjacent one end thereof and the tubular member is folded upon itself spaced from the other end thereof with confronting portions of the tubular member being sealed together and including an opening adjacent the fold between the confronting portions to maintain an open air path from the inlet aperture to the other end of the filter bag. The inlet aperture is located so as to create an air flow in the inlet chamber which is curved adjacent the opening between the confronting portions of the tubular member, so that the heavier dirt particles are encouraged to flow through this opening to the storage chamber thus formed for the dirt particles outside of the air flow for the floor care appliance.
REFERENCES:
patent: 3297233 (1967-01-01), Meyerhoefer
patent: 3350857 (1967-11-01), Fesco
patent: 3370405 (1968-02-01), Fesco
patent: 3426510 (1969-02-01), Schaaf
patent: 3491522 (1970-01-01), Fesco
patent: 3619989 (1971-11-01), Howard et al.
patent: 4381192 (1983-04-01), Grimard
Laing Gordon E.
Sumerau William R.
Bell Edward L.
Nozick Bernard
Schmidt Edward P.
Smith Robert E.
The Singer Company
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