US3158668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for mat forming
Assignee: Individual
•
Filing: 1960-12-19
•
Granted: 1964-11-24
•
Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Earl A N Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF FORMING A COMPACTED MAT FROM FINELYDIVIDED FIBERS COMPRISING THE STEPS OF FORMING FROM SUCH FIBERS A NON-COMPACTED FIRST MAT OF SUBSTANTIALLY UNIFORM DEPTH, CONTINUOUSLY DISINTERGRATING SUCCESSIVE PORTIONS OF SAID MAT INTO SUBSTANTIALLY INDIVIDUAL FIBERS AND REFORMING SUCH FIBERS INTO A RELATIVELY COMPACTED MAT BY CONTINUOUSLY ENTRAINING THEM IN A DOWNWARDLY DIRECTED HIGH VELOCITY FLUID JET EMITTED FROM AN ORIFICE AT AN INITIAL VELOCITY OF AT LEAST ABOUT 7500 F.P.M. AND HAVING A REDUCED PRESSURE ZONE AT ITS VENA CONTRACTA BY INTRODUCING SUCH FIBERS INTO AIR FLOWING TOWARD SAID REDUCED PRESSURE ZONE OF SAID HIGH VELOCITY JET THENCE PASSING SAID FLUID JET THROUGH A HORIZONTAL FLUID-PERVIOUS SURFACE ADAPTED TO RETAIN THE FIBERS ON ITS SURFACE.
Claim 2
Independent Claim
117 words
THE METHOD OF FORMING A COMPACTED MAT FROM FINELYDIVIDED FIBERS COMPRISING THE STEPS OF FORMING FROM SUCH FIBERS A NON-COMPACTED FIRST MAT OF SUBSTANTIALLY UNIFORM DEPTH, CONTINUOUSLY DISINTERGRATING SUCCESSIVE PORTIONS OF SAID MAT INTO SUBSTANTIALLY INDIVIDUAL FIBERS AND REFORMING SUCH FIBERS INTO A RELATIVELY COMPACTED MAT BY CONTINUOUSLY ENTRAINING THEM IN A DOWNWARDLY DIRECTED HIGH VELOCITY FLUID JET EMITTED FROM AN ORIFICE AT AN INITIAL VELOCITY OF AT LEAST ABOUT 7500 F.P.M. AND HAVING A REDUCED PRESSURE ZONE AT ITS VENA CONTRACTA BY INTRODUCING SUCH FIBERS INTO AIR FLOWING TOWARD SAID REDUCED PRESSURE ZONE OF SAID HIGH VELOCITY JET THENCE PASSING SAID FLUID JET THROUGH A HORIZONTAL FLUID-PERVIOUS SURFACE ADAPTED TO RETAIN THE FIBERS ON ITS SURFACE.
References Cited (Backward Citations)
CA583391A
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CA583442A
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US2152901A
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US2447161A
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US2979105A
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |