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Patent US6457052B1 successfully refreshed from Google Patents.
US3107382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush strip for power-driven brush
Assignee: PPG Industries Inc
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Filing: 1961-10-27
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Granted: 1963-10-22
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Tilgner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:53
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49908; Y10T29/49915
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A BRUSH STRIP COMPRISING A CHANNEL BACKING ELEMENT HAVING IMPERFORATE SIDE WALLS AND A WEB PORTION INTERCONNECTING THE SIDE WALLS, SAID SIDE WALLS HAVING SUBSTANTIALLY CONTINUOUS, LONGITUDINALLY EXTENDING RIBS FORMED THEREIN, HAIRPIN SHAPED FILL MATERIAL HAVING THE BIGHT PORTIONS THEREOF DISPOSED BETWEEN THE SIDE WALLS, A LOCKING CORE DISPOSED WITHIN THE BIGHT PORTIONS OF THE FILL MATERIAL AND HAVING LATERALLY EXTENDING TEETH ENGAGING THE RIBS WHEREBY TO HOLD THE LOCKING CORE WITHIN THE CHANNEL BACKING ELEMENT.
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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |