US4429430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner beater brush structure
Assignee: Panasonic Corp of North America
•
Filing: 1982-01-11
•
Granted: 1984-02-07
•
Expires: 2002-01-11
Abstract
Abstract A vacuum cleaner beater brush structure having a dowel roller provided with a sprocket for cooperation with a cog belt. The brush structure is elongated for providing a wide cleaning action. A portion of the brush is disposed outboard of the cog belt sprocket. The beater brush includes a novel arrangement of brush and beater bar strips carried in mounting channels in the dowel portion thereof. The end brush assembly is mounted to the dowel by mounting structure which further clamps the cog belt sprocket to one end of the dowel.
Inventors
- 👤 John B. Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0455; A47L9/0427; A47L9/0444
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
48 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 2
Dependent Claim
48 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 3
Dependent Claim
44 words
The vacuum cleaner beater brush structure of claim 1 wherein said sprocket comprises a molded toothed element and a retainer flange element retained between said toothed element and said one end of the dowel for retaining the cog belt in alignment with said teeth.
Claim 4
Dependent Claim
34 words
The vacuum cleaner beater brush structure of claim 1 wherein said means for securing the carrier comprises threaded means extended through the carrier and sprocket and threaded to said one end of the dowel.
Claim 5
Dependent Claim
19 words
The vacuum cleaner beater brush structure of claim 1 wherein said carrier is further provided with a beater element.
Claim 6
Dependent Claim
26 words
The vacuum cleaner beater brush structure of claim 1 wherein said sprocket and carrier are provided with coaxial annular shoulders for maintaining a coaxial disposition thereof.
Claim 7
Dependent Claim
33 words
The vacuum cleaner beater brush structure of claim 1 wherein said sprocket defines an integral retainer flange intermediate said teeth and said carrier for retaining the cog belt in alignment with said teeth.
Claim 8
Dependent Claim
26 words
The vacuum cleaner beater brush structure of claim 1 wherein said dowel is provided with an axle shaft projecting through said sprocket and into said carrier.
Claim 9
Dependent Claim
49 words
The vacuum cleaner beater brush structure of claim 1 further including a bearing axially outwardly of said carrier, and said dowel is provided with an axle shaft projecting through said sprocket, said carrier, and into said bearing for journaling the brush structure at said one end of the dowel.
Claim 10
Dependent Claim
103 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a cylindrical carrier; means for mounting the carrier for rotation about the cylindrical axis thereof; a first brush tuft projecting radially from a first circumferential portion of the carrier; a second brush tuft projecting radially from a second circumferentially spaced portion of the carrier; a beater element projecting radially from a third circumferential portion of the carrier intermediate said brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 11
Dependent Claim
103 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a cylindrical carrier; means for mounting the carrier for rotation about the cylindrical axis thereof; a first brush tuft projecting radially from a first circumferential portion of the carrier; a second brush tuft projecting radially from a second circumferentially spaced portion of the carrier; a beater element projecting radially from a third circumferential portion of the carrier intermediate said brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 12
Dependent Claim
23 words
The end brush structure of claim 9 wherein said means for mounting the carrier comprises means for mounting the carrier about an axle.
Claim 13
Dependent Claim
14 words
The end brush structure of claim 9 wherein said tufts are spaced approximately 120°.
Claim 14
Dependent Claim
16 words
The end brush structure of claim 9 wherein said tufts and beater element are equiangularly spaced.
Claim 15
Dependent Claim
18 words
The end brush structure of claim 9 wherein said tufts and beater element are equiangularly spaced 120° apart.
Claim 16
Dependent Claim
17 words
The end brush structure of claim 9 wherein said beater element is formed integrally with said carrier.
Claim 17
Dependent Claim
28 words
The end brush structure of claim 9 wherein each of said tufts comprises a plurality of bristles arranged along a helical line on the circumference of the carrier.
Claim 18
Dependent Claim
38 words
The end brush structure of claim 9 wherein each of said tufts comprises a plurality of bristles arranged along a helical line on the circumference of the carrier at an angle of approximately 7° to an axial plane.
Claim 19
Dependent Claim
48 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for retaining the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 20
Dependent Claim
48 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for retaining the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 21
Dependent Claim
28 words
The vacuum cleaner beater brush structure of claim 17 wherein one of said dowel and carrier has a length a small fraction of that of the other thereof.
Claim 22
Dependent Claim
47 words
A vacuum cleaner beater brush structure comprising: a pair of cylindrical elements each having brush tufts projecting radially therefrom; a sprocket adapted to be driven by a cog belt; and means for clamping the sprocket coaxially between said cylindrical elements, said sprocket comprising two axially abutted elements.
Claim 23
Dependent Claim
47 words
A vacuum cleaner beater brush structure comprising: a pair of cylindrical elements each having brush tufts projecting radially therefrom; a sprocket adapted to be driven by a cog belt; and means for clamping the sprocket coaxially between said cylindrical elements, said sprocket comprising two axially abutted elements.
Claim 24
Dependent Claim
32 words
The vacuum cleaner beater brush structure of claim 19 wherein said axially abutted elements cooperatively define axially spaced belt guide flanges and an annular drive tooth array axially intermediate said spaced flanges.
Claim 25
Dependent Claim
50 words
The vacuum cleaner beater brush structure of claim 19 wherein said axially abutted elements cooperatively define axially spaced belt guide flanges and an annular drive tooth array axially intermediate said spaced flanges, one of said flanges and said drive tooth array being formed integrally with one of said abutted elements.
Claim 26
Dependent Claim
70 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; means for securing the carrier to one end of the dowel with said sprocket retained therebetween; an axle extending from said dowel through said secured sprocket and into said carrier; and bearing means journaling the axle within said carrier.
Claim 27
Dependent Claim
70 words
A vacuum cleaner beater brush structure comprising: a dowel carrying a beater brush; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; means for securing the carrier to one end of the dowel with said sprocket retained therebetween; an axle extending from said dowel through said secured sprocket and into said carrier; and bearing means journaling the axle within said carrier.
Claim 28
Dependent Claim
31 words
The vacuum cleaner brush structure of claim 22 wherein there is an axle extending from each end of said dowel and there are bearing means for journaling each of said axles.
Claim 29
Dependent Claim
25 words
The vacuum cleaner brush structure of claim 22 wherein said bearing means includes tab means for mounting said brush structure to a vacuum cleaner base.
Claim 30
Dependent Claim
25 words
The vacuum cleaner structure of claim 24 wherein said tab means comprises a pair of tabs mounted on diametrically opposed portions of said bearing means.
Claim 31
Dependent Claim
24 words
The vacuum cleaner structure of claim 25 wherein said tab means includes projecting portions to lock said bearing means to a vacuum cleaner base.
Claim 32
Dependent Claim
64 words
A vacuum cleaner agitator structure comprising: a dowel carrying a beater brush element and a beater bar element; a magnet carried by said dowel beneath one of said elements; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 33
Dependent Claim
64 words
A vacuum cleaner agitator structure comprising: a dowel carrying a beater brush element and a beater bar element; a magnet carried by said dowel beneath one of said elements; a sprocket having teeth adapted to be driven by a cog belt; a carrier provided with brush tufts; and means for securing the carrier to one end of the dowel with said sprocket retained therebetween.
Claim 34
Dependent Claim
21 words
A vacuum cleaner agitator structure as claimed in claim 27 wherein said magnet is disposed inwardly of said beater bar element.
References Cited (Backward Citations)
US1742375A
Cited
US1743954A
Cited
US1914834A
Cited
US1900885A
Cited
US2140651A
Cited
GB516291A
Cited
US2753583A
Cited
US3608333A
Cited
US3737937A
Cited
US4355436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |