US3829344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing nonwoven floor coverings
Assignee: DSO TEXTIL
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Filing: 1973-03-02
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Granted: 1974-08-13
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Expires: 1993-03-02
Abstract
Abstract A machine for making nonwoven floor coverings. A felt layer is rammed into grooves, formed in a drum, by a "flying" ramming tool moving a follow each groove, the ramming tool being driven by crank mechanism, the guide of this mechanism being a connecting rod hinged parallelogram. The drum is continuously turned over by two opposite cogs rigidly connected with the ramming tool by a frame which moves therewith. The felt with the folds on the drum is adhered by a binding substance, which is cured or dried on the drum surface.
Inventors
- 👤 V Kostov
- 👤 J Aroyo
- 👤 L Dachev
- 👤 R Vasilev
- 👤 S Julev
- 👤 M Milkov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
D; D04; D04H; D04H11/00; D04H11/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016; Y10T156/1025; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529; Y10T74/1553; Y10T74/1555
Claims Analysis
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |