US3577507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tufting process for foamed plastic structures
Assignee: Millennium Petrochemicals Inc
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Filing: 1967-01-03
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Granted: 1971-05-04
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Expires: 1987-01-03
Abstract
Abstract A TUFTED PRODUCT SUCH AS A BLANKET OR RUG OR OTHER MATERIAL HAVING A RUG OR BLANKET LIKE STRUCTURE IS FORMED BY SHREDDING THE OUTER SURFACE OF AN ELONGATED FOAMED PLASTIC SHEET. IN THE SHREDDING PROCESS, THE FOAMED PLASTIC SHEET IS CARRIED OVER ROLLS HAVING WIRE BRISTLES EXTENDING FROM THEIR SURFACE WHICH STAB INTO THE SURFACE OF THE FOAMED SHEET AND SHRED THE SURFACE TO PRODUCE THE EFFECT OF A TUFTED OR NAPPED SURFACE. BOTH SIDES OF THE FOAMED SHEET ARE TUFTED BY THREADING THE SHEET ABOVE AND BELOW SEQUENTIALLY ARRANGED WIRE BRISTLE ROLLERS.
Inventors
- 👤 Herbert O Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
D; D04; D04H; D04H13/00; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0237; Y10T83/0244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |