Patent US3995346A successfully refreshed from Google Patents.
US3995346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary brush
Assignee: POWER BRUSH Inc
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Filing: 1975-04-04
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Granted: 1976-12-07
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Expires: 1995-04-04
Abstract
Abstract This invention is concerned with a superior rotary brush wherein an elongated brush member is coiled in a helical fashion around a central shaft or cylinder which incorporates a plurality of projections on its outer periphery. The elongated brush member is bent around the projections of said shaft or cylinder in such a fashion that its inner periphery is non-arcuate. The inner periphery of said elongated brush member forms a plurality of cords which generally circumscribe the central shaft or cylinder. In use the inner periphery of the elongated brush member engages the projections as are contained on the central shaft or cylinder in such a manner that movement of the elongated brush member in relation to central shaft or cylinder is prevented. The subject invention is particularly advantageous in that the forces which result from the engagement of the brush filament of the elongated brush member with a work piece are transmitted directly to the elongated shaft or cylinder and not to the fasteners whereby said elongated brush member is attached to said elongated shaft or cylinder.
Inventors
- 👤 John E. Grogan
- 👤 Gerard A. Parseghian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:01
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; A46B3/00; A46B3/08; A46B3/10; A46B3/14
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
103 words
A rotary brush comprising a central unitary cylinder, which is an extrusion, having a plurality of outwardly extending integral projections and an elongated brush member, having a channel-shaped backing, which is bent, biased, and wound around the projections of said central unitary cylinder, to such a degree that the backing of said elongated brush member, bites into and inwardly deforms said projections, the backing of said elongated brush member being non-arcuate in relation to the circumference of said projection and harder than said outwardly extending projections, wherein movement of the elongated brush member parallel to the axis of said unitary cylinder is prevented.
Claim 2
Dependent Claim
103 words
A rotary brush comprising a central unitary cylinder, which is an extrusion, having a plurality of outwardly extending integral projections and an elongated brush member, having a channel-shaped backing, which is bent, biased, and wound around the projections of said central unitary cylinder, to such a degree that the backing of said elongated brush member, bites into and inwardly deforms said projections, the backing of said elongated brush member being non-arcuate in relation to the circumference of said projection and harder than said outwardly extending projections, wherein movement of the elongated brush member parallel to the axis of said unitary cylinder is prevented.
Claim 3
Dependent Claim
23 words
The rotary brush of claim 1 wherein said elongated brush member comprises a U-shaped brush backing in which is positioned a filament member.
Claim 4
Dependent Claim
21 words
The rotary brush of claim 1 wherein said elongated brush member is wound around said central shaft in a helical fashion.
Claim 5
Dependent Claim
21 words
The rotary brush of claim 2 wherein said elongated brush member is wound around said central shaft in a helical fashion.
Claim 6
Dependent Claim
36 words
The rotary brush of claim 1 wherein said elongated brush member is wound around said central shaft in a helical fashion the sides of said elongated brush member being in an abutting relationship with each other.
Claim 7
Dependent Claim
36 words
The rotary brush of claim 2 wherein said elongated brush member is wound around said central shaft in a helical fashion the sides of said elongated brush member being in an abutting relationship with each other.
Claim 8
Dependent Claim
37 words
The rotary brush of claim 1 wherein said elongated brush member is wound around said central shaft in a helical fashion the sides of said elongated brush member being in a spaced apart relationship with each other.
Claim 9
Dependent Claim
37 words
The rotary brush of claim 2 wherein said elongated brush member is wound around said central shaft in a helical fashion the sides of said elongated brush member being in a spaced apart relationship with each other.
Claim 10
Dependent Claim
15 words
The rotary brush of claim 1 wherein said projections incorporate at least one deformable section.
Claim 11
Dependent Claim
15 words
The rotary brush of claim 2 wherein said projections incorporate at least one deformable section.
Claim 12
Dependent Claim
77 words
The rotary brush of claim 2 wherein said central cylinder incorporates six T-shaped projections having rounded edges; said rotary brush being further provided with a plate member which is adopted to fit between opposing pairs of said T-shaped projections, said elongated brush member being secured to said central cylinder by a fastener which biases said elongated brush member against the outer edge of said T-shaped projections and said plate member against the underside of said T-shaped projections.
Claim 13
Dependent Claim
137 words
A rotary brush comprising a central unitary cylinder, which is an extrusion, having a plurality of outwardly extending integral projections and an elongated brush member, having a channel-shaped backing, which is bent, biased, and wound around the projections of said central unitary cylinder, to such a degree that the backing of said elongated brush member, bites into and inwardly deforms said projections, the backing of said elongated brush member being non-arcuate in relation to the circumference of said projection and harder than said outwardly extending projections, wherein movement of the elongated brush member parallel to the axis of said unitary cylinder is prevented, wherein the ratio of H/C is less than 2, where H is the height of said channel-shaped backing and C is the length of the non-arcuate portion of said brush backing between said projections.
Claim 14
Dependent Claim
137 words
A rotary brush comprising a central unitary cylinder, which is an extrusion, having a plurality of outwardly extending integral projections and an elongated brush member, having a channel-shaped backing, which is bent, biased, and wound around the projections of said central unitary cylinder, to such a degree that the backing of said elongated brush member, bites into and inwardly deforms said projections, the backing of said elongated brush member being non-arcuate in relation to the circumference of said projection and harder than said outwardly extending projections, wherein movement of the elongated brush member parallel to the axis of said unitary cylinder is prevented, wherein the ratio of H/C is less than 2, where H is the height of said channel-shaped backing and C is the length of the non-arcuate portion of said brush backing between said projections.
Claim 15
Dependent Claim
17 words
The rotary brush of claim 12 wherein the ratio of H/C is from about 1.0 to 2.0.
Claim 16
Dependent Claim
17 words
The rotary brush of claim 12 wherein the ratio of H/C is from about 1.0 to 1.5.
Claim 17
Dependent Claim
13 words
The rotary brush of claim 12 wherein the ratio of H/C is 1.4.
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) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |