US3253291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary brush
Assignee: Osborn Manufacturing Corp
•
Filing: 1964-04-28
•
Granted: 1966-05-31
•
Expires: 1984-04-28
Abstract
No abstract record available.
Inventors
- 👤 Brooks E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:40
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A POWER DRIVEN ROTARY BRUSH SECTION COMPRISING AN ANNULAR CHANNELFORM SHEET METAL BRUSH BACK OF GENERAL U-SHAPE CROSS-SECTION OPENING RADIALLY OUTWARDLY, A RETAINING RIND WITHIN SAID BACK, A LAYER OF BRUSH MATERIAL FOLDED ABOUT SAID RING AND TIGHTLY SECURED IN SAID BACK BY SAID RING WITH SUCH BRUSH MATERIAL EXTENDING RADIALLY OUTWARDLY THEREFROM, AN INTEGRAL FLANGE ON SAID BACK FORMED OF FOLDED SHEET METAL EXTENDING RADIALLY INWARDLY THEREOF TO RIGIDIFY SAID BACK, AND A PLURALITY OF OPENINGS IN SAID FLANGE ADAPTED TO RECEIVE MEANS THEREIN TO SECURE A PLURALITY OF BRUSH SECTIONS INTO A BRUSH ASSEMBLY.
Claim 2
Dependent Claim
96 words
A POWER DRIVEN ROTARY BRUSH SECTION COMPRISING AN ANNULAR CHANNELFORM SHEET METAL BRUSH BACK OF GENERAL U-SHAPE CROSS-SECTION OPENING RADIALLY OUTWARDLY, A RETAINING RIND WITHIN SAID BACK, A LAYER OF BRUSH MATERIAL FOLDED ABOUT SAID RING AND TIGHTLY SECURED IN SAID BACK BY SAID RING WITH SUCH BRUSH MATERIAL EXTENDING RADIALLY OUTWARDLY THEREFROM, AN INTEGRAL FLANGE ON SAID BACK FORMED OF FOLDED SHEET METAL EXTENDING RADIALLY INWARDLY THEREOF TO RIGIDIFY SAID BACK, AND A PLURALITY OF OPENINGS IN SAID FLANGE ADAPTED TO RECEIVE MEANS THEREIN TO SECURE A PLURALITY OF BRUSH SECTIONS INTO A BRUSH ASSEMBLY.
Claim 3
Independent Claim
90 words
A METHOD OF MAKING AN ANNULAR ROTARY BRUSH COMPRISING FORMING A SHEET METAL CYLINDER HAVING A RADIALLY INWARD EXTENDING FLANGE NORMAL TO THE AXIS OF ROTATION OF THE BRUSH, AXIALLY APPLYING A BRUSH MATERIAL RETAINING RING ABOUT SAID CYLINDER WITH BRUSH MATERIAL UNIFORMLY INTERPOSED BETWEEN SAID RING AND CYLINDER IN A PRESS-FITTED RELATIONSHIP WITH SAID RING BEING AXIALLY LOCATED ABOUT SAID CYLINDER IN THE SAME RADIAL PLANE AS SAID FLANGE, AND SUBSEQUENTLY FORMING SAID CYLINDER INTO CHANNEL SHAPE THEREBY TIGHTLY PACKING SAID BRUSH MATERIAL BETWEEN SAID RING AND SAID CHANNEL.
Claim 4
Independent Claim
90 words
A METHOD OF MAKING AN ANNULAR ROTARY BRUSH COMPRISING FORMING A SHEET METAL CYLINDER HAVING A RADIALLY INWARD EXTENDING FLANGE NORMAL TO THE AXIS OF ROTATION OF THE BRUSH, AXIALLY APPLYING A BRUSH MATERIAL RETAINING RING ABOUT SAID CYLINDER WITH BRUSH MATERIAL UNIFORMLY INTERPOSED BETWEEN SAID RING AND CYLINDER IN A PRESS-FITTED RELATIONSHIP WITH SAID RING BEING AXIALLY LOCATED ABOUT SAID CYLINDER IN THE SAME RADIAL PLANE AS SAID FLANGE, AND SUBSEQUENTLY FORMING SAID CYLINDER INTO CHANNEL SHAPE THEREBY TIGHTLY PACKING SAID BRUSH MATERIAL BETWEEN SAID RING AND SAID CHANNEL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |