Patent US3874017A successfully refreshed from Google Patents.
US3874017A
Expired / Lapsed
US
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Rotary brush assembly
Assignee: Superior Brush Co
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Filing: 1973-07-18
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Granted: 1975-04-01
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Expires: 1993-07-18
Abstract
Abstract A roll for a rotary brush assembly characterized by a one-piece construction of good strength and rigidity including radially spaced coaxial inner and outer walls, ribs between the walls along the length of the roll, and slots in the outer wall for mounting brush and beater elements.
Inventors
- 👤 Russell H R Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/005; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
A rotary brush assembly comprising a rigid, one-piece extruded, molded, or cast roll including as an integral structure inner and outer radially spaced coaxial walls and a plurality of circularly spaced ribs extending lengthwise of said roll between said walls, said outer wall having slot means formed therein, and brush strip means carried in said slot means.
Claim 2
Dependent Claim
57 words
A rotary brush assembly comprising a rigid, one-piece extruded, molded, or cast roll including as an integral structure inner and outer radially spaced coaxial walls and a plurality of circularly spaced ribs extending lengthwise of said roll between said walls, said outer wall having slot means formed therein, and brush strip means carried in said slot means.
Claim 3
Dependent Claim
40 words
A brush assembly as claimed in claim 1 in which portions of said outer wall converge radially inwardly to form a belt pulley located between the ends of said roll, said outer wall portions being integral with said inner wall.
Claim 4
Dependent Claim
32 words
A brush assembly as claimed in claim 1 in which said outer wall has at leAst one slot, and in which said brush means comprises a brush strip seated in said slot.
Claim 5
Dependent Claim
22 words
A brush assembly as claimed in claim 1 wherein said slots extend uninterrupted from one end of said roll to the other.
Claim 6
Dependent Claim
124 words
A rotary brush assembly comprising a rigid, one-piece roll including as an integral structure inner and outer radially spaced coaxial walls, a plurality of circularly spaced ribs extending lengthwise of said roll between said walls, said outer wall having portions converging radially inwardly to form a belt pulley between the ends of said roll, said outer wall portions being integral with said inner wall, a first pair of helical slots in said outer wall extending from one end of said roll and terminating adjacent said belt pulley, and a second pair of helical slots in said outer wall extending from the other end of said roll and terminating adjacent said belt pulley; and brush strip means and beater element means carried in said slots.
Claim 7
Dependent Claim
124 words
A rotary brush assembly comprising a rigid, one-piece roll including as an integral structure inner and outer radially spaced coaxial walls, a plurality of circularly spaced ribs extending lengthwise of said roll between said walls, said outer wall having portions converging radially inwardly to form a belt pulley between the ends of said roll, said outer wall portions being integral with said inner wall, a first pair of helical slots in said outer wall extending from one end of said roll and terminating adjacent said belt pulley, and a second pair of helical slots in said outer wall extending from the other end of said roll and terminating adjacent said belt pulley; and brush strip means and beater element means carried in said slots.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |