Patent US3602936A successfully refreshed from Google Patents.
US3602936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary brush section
Assignee: United Rotary Brush Corp
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Filing: 1969-09-30
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Granted: 1971-09-07
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Expires: 1989-09-30
Abstract
Abstract A rotary brush section of the type mounted in suitable numbers on a central core to be driven thereby for heavy duty sweeping, such as street or industrial sweeping purposes. It comprises a split ring which receives and retains heavy radially extending bristles, and a connection for the split ring which not only serves as a connection but as a driving lug to be engaged by the core.
Inventors
- 👤 Arthur E Drumm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:16
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/003
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
A brush section comprising a split ring with adjacent ends and being of channel cross section opening outwardly and having bristles anchored therein and extending radially outwardly therefrom, said ring having an inner wall and outwardly extending sidewall flanges, a channel member connecting the ring ends together, said channel member being of outwardly opening channel cross section and slipped outwardly over the adjacent ends of the ring into straddling relationship thereto, said channel member having an inner wall and outwardly extending spaced sidewall flanges of substantial depth which overlap the adjacent sidewall flanges of the ring, shoulders on said channel member intermediate the depth of said sidewall flanges to engage the inner wall of said ring and to space the inner wall of said channel member substantially radially inwardly of said inner wall of said ring resulting in a driving lug portion extending radially inwardly from the ring a substantial distance, and means for attaching the sidewall flanges of the channel connecting member to the underlying sidewall flanges of the ring.
Claim 2
Dependent Claim
171 words
A brush section comprising a split ring with adjacent ends and being of channel cross section opening outwardly and having bristles anchored therein and extending radially outwardly therefrom, said ring having an inner wall and outwardly extending sidewall flanges, a channel member connecting the ring ends together, said channel member being of outwardly opening channel cross section and slipped outwardly over the adjacent ends of the ring into straddling relationship thereto, said channel member having an inner wall and outwardly extending spaced sidewall flanges of substantial depth which overlap the adjacent sidewall flanges of the ring, shoulders on said channel member intermediate the depth of said sidewall flanges to engage the inner wall of said ring and to space the inner wall of said channel member substantially radially inwardly of said inner wall of said ring resulting in a driving lug portion extending radially inwardly from the ring a substantial distance, and means for attaching the sidewall flanges of the channel connecting member to the underlying sidewall flanges of the ring.
Claim 3
Dependent Claim
17 words
Structure according to claim 1 in which said fastening means comprising interlocking portions between said overlapping flanges.
Claim 4
Dependent Claim
42 words
Structure according to claim 2 in which the connecting member has its outer wall turned outwardly over the ends of the flanges to provide outwardly disposed stop edges which serve as said shoulders for engaging the inner wall of the channel ring.
Claim 5
Dependent Claim
31 words
Structure according to claim 3 in which the outer edges of the flanges of said connecting member are provided with tongues bent around the adjacent outer edges of said ring flanges.
Claim 6
Dependent Claim
34 words
Structure according to claim 3 in which the inner wall of said connecting member and the outer edges of said flanges of the connecting member are curved concentrically with the curvature of the ring.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |