Patent US3657052A successfully refreshed from Google Patents.
US3657052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing nonwoven carpets
Assignee: Makropatent Trust
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Filing: 1969-04-28
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Granted: 1972-04-18
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Expires: 1989-04-28
Abstract
Abstract Device for the production of nonwoven carpets wherein two folding blades are each connected to a system of oscillating levers, whereby each system is controlled by a set of cams in such a way that one folding blade is temporarily maintained in its lowest position whilst the second folding blade starts a downward movement and deviates the set of threads.
Inventors
- 👤 Alfons Debonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:48
CPC Classifications
D; D04; D04H; D04H11/00; D04H11/04; D06; D06N; D06N3/00; D06N3/007; D06N3/0072; D06N7/00; D06N7/0063; D06N7/0068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A device for producing a nonwoven carpet made from two backing layers coated with glue and fed into a well and a set of threads between the loops, said device comprising, in combination, folding blades acting alternately upon the set of threads to forM loops between the layers, rods, each folding blade being fixed to the free end of a rod, levers, each rod being pivotally connected at its other end to a lever, shafts, said levers being fixed to said shafts, bearings supporting said shafts for rotation, other levers pivotally connected with said rods intermediate their lengths, third levers pivotally connected with said other levers, bearings supporting said third levers, rods connected with said shafts for imparting angular displacements to the shafts, cams actuating said rods, and means actuating said cams to maintain one folding blade temporarily in its lowermost position while a second folding blade starts its downward movement and deviates the set of threads.
Claim 2
Independent Claim
157 words
A device for producing a nonwoven carpet made from two backing layers coated with glue and fed into a well and a set of threads between the loops, said device comprising, in combination, folding blades acting alternately upon the set of threads to forM loops between the layers, rods, each folding blade being fixed to the free end of a rod, levers, each rod being pivotally connected at its other end to a lever, shafts, said levers being fixed to said shafts, bearings supporting said shafts for rotation, other levers pivotally connected with said rods intermediate their lengths, third levers pivotally connected with said other levers, bearings supporting said third levers, rods connected with said shafts for imparting angular displacements to the shafts, cams actuating said rods, and means actuating said cams to maintain one folding blade temporarily in its lowermost position while a second folding blade starts its downward movement and deviates the set of threads.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |