Patent US4419784A successfully refreshed from Google Patents.
US4419784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable brush vacuum cleaner
Assignee: Individual
•
Filing: 1981-06-05
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Granted: 1983-12-13
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Expires: 2001-06-05
Abstract
Abstract A portable brush vacuum cleaner includes a casing enclosing an electric motor for a suction fan. The casing also encloses at least one roller cleaning brush driven by a speed reduction gear. A brush housing is connected to a dust collector provided above the roller brush. The brush housing is also connected with the suction side of the fan through a suction channel. In a divided space above the roller brush an additional suction chamber is provided which is partially formed by baffle elements. The additional suction chamber extends about the whole length of the brush or brushes and opens into the suction channel leading to the dust-collector.
Inventors
- 👤 Franz Lex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:53
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0411; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26; A47L9/0461; A47L9/0488
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A handheld vacuum for removing dust from an object comprising: a casing; an electric motor disposed within said casing; suction means connected to said electric motor for removing said dust; gear reduction means connected to said electric motor; at least one cylindrical cleaning brush connected to and driven via said gear reduction means; a dust collector provided on said casing; fluid inlet means formed in said dust collector; fluid outlet means formed in said dust collector communicating with said suction means; at least one suction channel fluidly communicating with said fluid inlet means; a brush housing separate from said dust container and disposed adjacent said at least one cylindrical cleaning brush and forming a suction chamber fluidly communicating with said at least one suction channel; and baffle means operatively associated with said brush housing and longitudinally disposed adjacent an upper portion of said at least one cylindrical cleaning brush, said baffle means defining a surface portion of said suction chamber for preventing said dust from returning to said object.
Claim 2
Dependent Claim
169 words
A handheld vacuum for removing dust from an object comprising: a casing; an electric motor disposed within said casing; suction means connected to said electric motor for removing said dust; gear reduction means connected to said electric motor; at least one cylindrical cleaning brush connected to and driven via said gear reduction means; a dust collector provided on said casing; fluid inlet means formed in said dust collector; fluid outlet means formed in said dust collector communicating with said suction means; at least one suction channel fluidly communicating with said fluid inlet means; a brush housing separate from said dust container and disposed adjacent said at least one cylindrical cleaning brush and forming a suction chamber fluidly communicating with said at least one suction channel; and baffle means operatively associated with said brush housing and longitudinally disposed adjacent an upper portion of said at least one cylindrical cleaning brush, said baffle means defining a surface portion of said suction chamber for preventing said dust from returning to said object.
Claim 3
Dependent Claim
20 words
The vacuum of claim 1 wherein said at least one suction channel comprises a first and a second suction channels.
Claim 4
Dependent Claim
86 words
The vacuum of claim 1 wherein said at least one cylindrical cleaning brush comprises a longitudinal axis and wherein said suction chamber comprises first and second end portions axially spaced adjacent said longitudinal axis of said at least one cylindrical cleaning brush and wherein said at least one suction channel is vertically disposed with respect to said longitudinal axis of said at least one cylindrical cleaning brush such that said at least one suction channel fluidly joins said suction chamber at said first end portion thereof.
Claim 5
Dependent Claim
45 words
The vacuum of claim 3 further comprising a detachable cover member connected to said dust collector adjacent said first axial end portion of said at least one cylindrical cleaning brush and wherein said at least one suction channel is provided within said detachable cover member.
Claim 6
Dependent Claim
23 words
The vacuum of claim 4 wherein said dust collector and said brush housing each further comprises connecting means for mutual detachable engagement therebetween.
Claim 7
Dependent Claim
16 words
The vacuum of claim 5 wherein said connecting means comprises means for forming a dovetail joint.
Claim 8
Dependent Claim
79 words
The vacuum of claim 5 wherein said at least one cylindrical cleaning brush is secured to and stored within said brush housing, and wherein said vacuum further comprises: a drive shaft coupled to said gear reduction means; and a brush shaft provided on said at least one cylindrical cleaning brush having engaging means for coupling with said drive shaft such that mutual engagement of said connecting means couples said brush shaft with said drive shaft via said engaging means.
Claim 9
Dependent Claim
62 words
The vacuum of claim 1 wherein said at least one cylindrical cleaning brush further comprises a first and a second cylindrical cleaning brush, said first and second cylindrical cleaning brushes being disposed in a mutually parallel relationship and wherein said baffle means is disposed adjacent an upper portion and a side portion of each of said first and second cylindrical cleaning brushes.
Claim 10
Dependent Claim
52 words
The vacuum of claim 8 further comprising a cross piece disposed between said first and second cylindrical cleaning brushes and extending from an upper portion of said brush housing to a lower portion of said brush housing so as to partition said suction chamber between said first and second cylindrical cleaning brushes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |