US2827668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for manufacturing fibrous structures
Assignee: Fibrofelt Corp
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Filing: 1953-07-07
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Granted: 1958-03-25
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Expires: 1973-07-07
Abstract
No abstract record available.
Inventors
- 👤 James D A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN THE DEPOSITION OF DRY FIBERS ENTRAINED IN AN AIR STREAM WHEREIN THE AIR STREAM AND ENTRAINED FIBERS ARE PASSED THROUGH A FELTING HEAD THROUGH OPENINGS TO A COLLECTING MEMBER IN THE FORMATION OF A FIBROUS STRUCTURE, THE METHOD OF SUBJECTING AT LEAST SOME OF THE SURFACES OF THE HEAD TO THE EFFECT OF THE INTERMITTENT APPLICATION OF JETS OF HIGH VELOCITY AIR SEPARATE AND APART FROM THE AIR STREAM ENTRAINING THE FIBERS FOR PREVENTING THE AGGREGATION OF FIBERS ON THE INTERIOR SURFACE OF THE FELTING HEAD ACTED UPOM BY THE JETS AND THE OPENINGS LEADING TO THE COLLECTING MEMBER.
Claim 2
Dependent Claim
100 words
IN THE DEPOSITION OF DRY FIBERS ENTRAINED IN AN AIR STREAM WHEREIN THE AIR STREAM AND ENTRAINED FIBERS ARE PASSED THROUGH A FELTING HEAD THROUGH OPENINGS TO A COLLECTING MEMBER IN THE FORMATION OF A FIBROUS STRUCTURE, THE METHOD OF SUBJECTING AT LEAST SOME OF THE SURFACES OF THE HEAD TO THE EFFECT OF THE INTERMITTENT APPLICATION OF JETS OF HIGH VELOCITY AIR SEPARATE AND APART FROM THE AIR STREAM ENTRAINING THE FIBERS FOR PREVENTING THE AGGREGATION OF FIBERS ON THE INTERIOR SURFACE OF THE FELTING HEAD ACTED UPOM BY THE JETS AND THE OPENINGS LEADING TO THE COLLECTING MEMBER.
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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |