US4776059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-cleaning apparatus
Assignee: Duepro AG
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Filing: 1988-02-03
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Granted: 1988-10-11
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Expires: 2008-02-03
Abstract
Abstract A vacuum-cleaning apparatus for cleaning furniture or the like, especially upholstered furniture, upholstered vehicle seats, etc. The apparatus is connected via a vacuum conduit to a vacuum-cleaning unit. A first vacuum nozzle is provided with a brush and includes a housing having an intake opening that leads to the vacuum conduit. A second vacuum nozzle is embodied as a gap-cleaning nozzle and is pivotable, relative to the first vacuum nozzle, out of an inoperative position into an operative position, and vice versa. An air duct is pivotably mounted in the housing. In the operative position of the gap-cleaning nozzle, the latter communicates via the air duct with the intake opening of the housing to provide flow communication from the gap-cleaning nozzle to the vacuum conduit.
Inventors
- 👤 Peter Worwag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:15
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0416
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
291 words
A vacuum-cleaning apparatus that is detachably connected to a vacuum-cleaning unit via a vacuum conduit, said apparatus comprising: a first vacuum nozzle, which is provided with a brush and includes a housing having a first intake opening therein that leads to said vacuum conduit, with said housing having a second intake opening on an outer portion thereof in the vicinity of said brush; a second vacuum nozzle, which is embodied as a gap-cleaning nozzle and is pivotably mounted on said housing in such a way as to be pivotable, relative to said first vacuum nozzle, out of an inoperative position into an operative position, and vice versa, with said second vacuum nozzle having two ends, one of which is provided with a third intake opening, and the other of which is provided with a first outlet opening; and an air duct that is pivotably mounted in said housing and has two ends, one of which is provided with an inlet opening, and the other of which is provided with a second outlet opening whereby in said operative position of said second vacuum nozzle, the latter communicates via said first outlet opening thereof with said inlet opening of said air duct, and said second outlet opening of said air duct is aligned with said first intake opening of said housing to establish flow communication from said third intake opening of said second vacuum nozzle to said vacuum conduit, whereas in said inoperative position of said second vacuum nozzle, said second outlet opening of said air duct is no longer aligned with said first intake opening of said housing, thereby establishing flow communication from said second intake opening of said housing to said first intake opening thereof, and hence to said vacuum conduit.
Claim 2
Dependent Claim
291 words
A vacuum-cleaning apparatus that is detachably connected to a vacuum-cleaning unit via a vacuum conduit, said apparatus comprising: a first vacuum nozzle, which is provided with a brush and includes a housing having a first intake opening therein that leads to said vacuum conduit, with said housing having a second intake opening on an outer portion thereof in the vicinity of said brush; a second vacuum nozzle, which is embodied as a gap-cleaning nozzle and is pivotably mounted on said housing in such a way as to be pivotable, relative to said first vacuum nozzle, out of an inoperative position into an operative position, and vice versa, with said second vacuum nozzle having two ends, one of which is provided with a third intake opening, and the other of which is provided with a first outlet opening; and an air duct that is pivotably mounted in said housing and has two ends, one of which is provided with an inlet opening, and the other of which is provided with a second outlet opening whereby in said operative position of said second vacuum nozzle, the latter communicates via said first outlet opening thereof with said inlet opening of said air duct, and said second outlet opening of said air duct is aligned with said first intake opening of said housing to establish flow communication from said third intake opening of said second vacuum nozzle to said vacuum conduit, whereas in said inoperative position of said second vacuum nozzle, said second outlet opening of said air duct is no longer aligned with said first intake opening of said housing, thereby establishing flow communication from said second intake opening of said housing to said first intake opening thereof, and hence to said vacuum conduit.
Claim 3
Dependent Claim
26 words
A vacuum-cleaning apparatus according to claim 1, in which said second vacuum nozzle, in its inoperative position, is disposed within an outer contour of said apparatus.
Claim 4
Dependent Claim
41 words
A vacuum-cleaning apparatus according to claim 1, in which said air duct is a two-part tube comprising a shorter tubular section that is provided with said inlet opening, and a longer tubular section that is provided with said second outlet opening.
Claim 5
Dependent Claim
28 words
A vacuum-cleaning apparatus according to claim 3, in which said air duct has a pivot axis that extends through approximately the center of said shorter tubular section thereof.
Claim 6
Dependent Claim
67 words
A vacuum-cleaning apparatus according to claim 3, which includes means for operatively connecting said second vacuum nozzle and said air duct in such a way that when said second vacuum nozzle is pivoted out of its inoperative position and into its operative position, said air duct is also pivoted, thereby establishing said communication with said first intake opening of said housing, and hence with said vacuum conduit.
Claim 7
Dependent Claim
35 words
A vacuum-cleaning apparatus according to claim 3, in which, in said operative position of said second vacuum nozzle, said first outlet opening of the latter is aligned with said inlet opening of said air duct.
Claim 8
Dependent Claim
100 words
A vacuum-cleaning apparatus according to claim 6, in which said shorter tubular section of said air duct has a free end that is remote from said longer tubular section and forms said inlet opening of said air duct; and in which said second vacuum nozzle is provided with a connection extension that is connected to said other end thereof and extends downwardly into said housing at approximately right angles to the remainder of said second vacuum nozzle, with said connection extension having a free end that is remote from said second vacuum nozzle and forms said first outlet opening thereof.
Claim 9
Dependent Claim
40 words
A vacuum-cleaning apparatus according to claim 1, in which, in said operative position of said second vacuum nozzle, at least a portion of all of the air that is being sucked into said apparatus flows through said second vacuum nozzle.
Claim 10
Dependent Claim
15 words
A vacuum-cleaning apparatus according to claim 1, in which said brush is a cylindrical brush.
Claim 11
Dependent Claim
28 words
A vacuum-cleaning apparatus according to claim 9, which includes an air turbine in said housing, with said brush being coupled to said air turbine via a belt drive.
Claim 12
Dependent Claim
27 words
A vacuum-cleaning apparatus according to claim 10, in which said air turbine is adapted to be driven by intake air that flows through said first vacuum nozzle.
Claim 13
Dependent Claim
40 words
A vacuum-cleaning apparatus according to claim 1, which includes means for selectively securing said second vacuum nozzle in its operative and inoperative positions to prevent accidental pivoting of said second vacuum nozzle out of a given one of these positions.
Claim 14
Dependent Claim
34 words
A vacuum-cleaning apparatus according to claim 12, in which said securing means is in the form of a locking mechanism for selectively arresting said second vacuum nozzle in said operative and inoperative positions thereof.
Claim 15
Dependent Claim
27 words
A vacuum-cleaning apparatus according to claim 13, in which said locking mechanism includes means for automatically arresting said second vacuum nozzle in said operative and inoperative positions.
Claim 16
Dependent Claim
36 words
A vacuum-cleaning apparatus according to claim 13, in which said locking mechanism is operatively interposed between said second vacuum nozzle and said air duct, and includes a lever, a pin, and at least one arresting recess.
Claim 17
Dependent Claim
23 words
A vacuum-cleaning apparatus according to claim 15, in which said lever is connected to said air duct to form a single structural component.
Claim 18
Dependent Claim
13 words
A vacuum-cleaning apparatus according to claim 16, in which said lever is resilient.
Claim 19
Dependent Claim
26 words
A vacuum-cleaning apparatus according to claim 17, in which said lever has an upper end, remote from said air duct, on which is disposed said pin.
Claim 20
Dependent Claim
57 words
A vacuum-cleaning apparatus according to claim 18, in which said second vacuum nozzle is provided with a first arresting recess and a second arresting recess; and in which said pin has an end, remote from said lever, that cooperates with said first and second arresting recesses in said operative and inoperative positions of said second vacuum nozzle.
Claim 21
Dependent Claim
45 words
A vacuum-cleaning apparatus according to claim 19, which includes a release mechanism, in the form of a push button, that projects upwardly beyond said housing and is adapted to make operative contact with said lever to release said second vacuum nozzle from an arrested position.
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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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |