US3584328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Streetsweeper brush
Assignee: FAB FIBRE CO
•
Filing: 1969-12-02
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Granted: 1971-06-15
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Expires: 1989-12-02
Abstract
Abstract IN A STREETSWEEPER BRUSH, HAVING A POWER ROTATED CORE, ONE OR MORE ELONGATED HOLLOW TUBULAR INFLATABLE FLEXIBLE MANDRELS MOUNTED ON AND ALONG SAID CORE, AND ONE OR MORE BRISTLE MAT ASSEMBLIES OF SLEEVE FORM MOUNTED ON SAID MANDRELS, PRESSURIZING AND EXPANSION OF SAID MANDRELS AFFIXING SAID MANDRELS TO THE CORE AND TO SAID BRISTLE MAT ASSEMBLIES, THE BRISTLE MAT ASSEMBLY INCLUDING AN ELONGATED STRIP OF PLASTIC MATERIAL, HAVING A SERIES OF PARALLEL ROWS OF SPACED BRISTLE BUNDLES OF PLASTIC MATERIAL, THE BRISTLE EXTENDING DOWN INTO SAID STRIP AT RIGHT ANGLES THERETO AND IMBEDDED AND BONDED THERETO.
Inventors
- 👤 Leo Lechene
- 👤 John Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:26
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |