Patent US3877902A successfully refreshed from Google Patents.
US3877902A
Expired / Lapsed
US
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Floor surface treating apparatus
Assignee: Electrolux AB
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Filing: 1973-11-29
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Granted: 1975-04-15
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Expires: 1993-11-29
Abstract
Abstract A floor surface treating device having a container with a motor fan unit and a cyclone separator on one side thereof and a filter on the other side thereof. The container is provided with an inlet for the reception of dust-laden air or liquid. The inlet opening to the motor fan unit for the air flowing from the air outlet of the cyclone separator is in the form of a channel extending downwardly and toward the interior of the container whereby the liquid which may be entrained with the air can be removed from the air stream before it enters the motor fan unit. A tilting device for the container is provided and an arrangement for the inlet tubular piece is supplied for latching a suction conduit thereto.
Inventors
- 👤 Bolik Anders Gottfrid Eriksson
- 👤 Milos Vukotic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:32
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; A47L7/00; A47L7/0004; A47L7/0019; A47L7/0023; A47L7/0038; A47L7/0042; A47L9/00; A47L9/10; A47L9/16; A47L9/1608; A47L9/165; A47L9/1658; A47L9/1666; A47L9/22; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dustladen air or liquid, a discharge opening for clean air, a lower part for collecting separated dust or separated liquid, a generally vertically disposed cyclone separation 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 filter in said container, means mounting said filter above said separator and said motor-fan unit, said separator having an outlet, and a conduit system means including pipe means extending through said filter for transporting air from the separator through said outlet and said pipe means and through said filter to the inlet opening of said motor-fan unit and subsequently to said discharge opening for clean air, and conduit system means further constituting a passageway located between said filter and said inlet opening to the motor-fan unit, said passageway having a laterally extending portion located below said motor-fan and in which liquid is collected and substantially all the air passing through said filter moves therethrough and changes direction of movement to pass through said motor-fan unit.
Claim 2
Dependent Claim
193 words
A floor surface treating apparatus comprising a container having an upper part provided with an inlet opening for dustladen air or liquid, a discharge opening for clean air, a lower part for collecting separated dust or separated liquid, a generally vertically disposed cyclone separation 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 filter in said container, means mounting said filter above said separator and said motor-fan unit, said separator having an outlet, and a conduit system means including pipe means extending through said filter for transporting air from the separator through said outlet and said pipe means and through said filter to the inlet opening of said motor-fan unit and subsequently to said discharge opening for clean air, and conduit system means further constituting a passageway located between said filter and said inlet opening to the motor-fan unit, said passageway having a laterally extending portion located below said motor-fan and in which liquid is collected and substantially all the air passing through said filter moves therethrough and changes direction of movement to pass through said motor-fan unit.
Claim 3
Dependent Claim
36 words
A floor surface treating apparatus as set forth in claim 1 wherein said passageway includes a portion in the form of a pipe positioned under said filter and being arranged generally parallel to said pipe means.
Claim 4
Dependent Claim
37 words
A floor surface treating apparatus as set forth in claim 2 wherein said pipe is provided with a plate at the bottom end thereof, said plate being the ceiling of said laterally extending portion of the passageway.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |