US3870486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor surface treating apparatus
Assignee: Electrolux AB
•
Filing: 1973-09-19
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Granted: 1975-03-11
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Expires: 1993-09-19
Abstract
Abstract A floor surface treating apparatus having multistage dust and liquid separation and in which the apparatus is provided with an upper part having an inlet for dust-laden air or liquid, and a discharge opening for clean air. A cyclone separator and a motor fan unit are mounted substantially centrally in the apparatus. The separated dust as well as the separated liquid is collected in the lower part of the apparatus from the cyclone separator, and the air outlet in the cyclone separator communicates with the clean air outlet through a filter and the motor fan unit of the apparatus.
Inventors
- 👤 Bolik Anders Gottfrid Eriksson
- 👤 Erik Karl Gustav Johansson
- 👤 Milos Vukotic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:29
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0004; A47L7/0042; A47L7/0019; A47L7/0023; A47L7/0028; A47L7/0038; A47L9/00; A47L9/0081; A47L9/10; A47L9/12; A47L9/122; A47L9/16; A47L9/1658; A47L9/1666; A47L9/22; Y; Y10; Y10S; Y10S55/00; Y10S55/03; Y10S55/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
200 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dust-laden air or liquid and discharge opening for clean air and a lower part foR collecting separated dust or separated liquid, a generally vertically disposed cyclone separator in said container operatively connected to said inlet opening, at least one motor-fan unit in said container for moving air through said container, a relatively flat filter extending substantially across the entire width of the upper part of said container, means supporting said filter above both said separator and said motor-fan unit; said support means comprise means forming a housing around said filter; and said housing having an air inlet above said filter and air outlet below said filter, and said support means further forms a passageway from said separator to the inlet of said housing whereby air leaving said separator follows said passageway to the inlet of said housing and then flows through said filter and said housings outlet to the inlet of said motor-fan unit and subsequently to said discharge opening for clean air, and said separator being provided with a dust and liquid outlet communicating with said lower part of said container.
Claim 2
Dependent Claim
200 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dust-laden air or liquid and discharge opening for clean air and a lower part foR collecting separated dust or separated liquid, a generally vertically disposed cyclone separator in said container operatively connected to said inlet opening, at least one motor-fan unit in said container for moving air through said container, a relatively flat filter extending substantially across the entire width of the upper part of said container, means supporting said filter above both said separator and said motor-fan unit; said support means comprise means forming a housing around said filter; and said housing having an air inlet above said filter and air outlet below said filter, and said support means further forms a passageway from said separator to the inlet of said housing whereby air leaving said separator follows said passageway to the inlet of said housing and then flows through said filter and said housings outlet to the inlet of said motor-fan unit and subsequently to said discharge opening for clean air, and said separator being provided with a dust and liquid outlet communicating with said lower part of said container.
Claim 3
Dependent Claim
200 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dustladen air or liquid and discharge opening for clean air and a lower part foR collecting separated dust or separated liquid, a generally vertically disposed cyclone separator in said container operatively connected to said inlet opening, at least one motorfan unit in said container for moving air through said container, a relatively flat filter extending substantially across the entire width of the upper part of said container, means supporting said filter above both said separator and said motorfan unit; said support means comprise means forming a housing around said filter; and said housing having an air inlet above said filter and air outlet below said filter, and said support means further forms a passageway from said separator to the inlet of said housing whereby air leaving said separator follows said passageway to the inlet of said housing and then flows through said filter and said housings outlet to the inlet of said motorfan unit and subsequently to said discharge opening for clean air, and said separator being provided with a dust and liquid outlet communicating with said lower part of said container.
Claim 4
Dependent Claim
200 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dustladen air or liquid and discharge opening for clean air and a lower part foR collecting separated dust or separated liquid, a generally vertically disposed cyclone separator in said container operatively connected to said inlet opening, at least one motorfan unit in said container for moving air through said container, a relatively flat filter extending substantially across the entire width of the upper part of said container, means supporting said filter above both said separator and said motorfan unit; said support means comprise means forming a housing around said filter; and said housing having an air inlet above said filter and air outlet below said filter, and said support means further forms a passageway from said separator to the inlet of said housing whereby air leaving said separator follows said passageway to the inlet of said housing and then flows through said filter and said housings outlet to the inlet of said motorfan unit and subsequently to said discharge opening for clean air, and said separator being provided with a dust and liquid outlet communicating with said lower part of said container.
Claim 5
Dependent Claim
49 words
The apparatus as claimed in claim 1 wherein said supporting means comprising a substantially funnel-shaped intermediate wall, the upper peripheral edge of which supports said filter, and the lower part of said intermediate wall being provided with said opening that communicates with the inlet opening of said motor-fan unit.
Claim 6
Dependent Claim
35 words
The apparatus as claimed in claim 1 further comprising a sound absorber structure arranged in the upper part of said housing container between the exhaust opening of said motor fan unit and said discharge opening.
Claim 7
Dependent Claim
21 words
The apparatus as claimed in claim 1 further comprising a liquid level sensor in the lower part of said housing container.
Claim 8
Dependent Claim
23 words
The apparatus as claimed in claim 1 wherein said filter comprises a plurality of superposed layers of inorganic material forming an integrated structure.
Claim 9
Dependent Claim
13 words
The apparatus as claimed in claim 5 wherein said filter material is fiberglass.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |