Patent US2644780A successfully refreshed from Google Patents.
US2644780A
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US
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Method of forming fluffed filamentary masses and article produced thereby
Assignee: Johns Manville Corp
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Filing: 1949-01-11
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Granted: 1953-07-07
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Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Simkins
- 👤 Richard N Jasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:19
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/075; D; D04; D04H; D04H3/00; D04H3/02; D04H3/05; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T156/1052; Y10T156/1059; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24083; Y10T428/24355; Y10T428/24802; Y10T428/24926
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
THE METHOD COMPRISING FORMING A MAT OF A PLURALITY OF LAYERS OF FILAMENTS, WITH THE FILAMENTS EXTENDING GENERALLY TRANSVERSELY OF THE MAT AND WITH THE FILAMENTS OF ADJACENT LAYERS CROSSING AT ACUTE ANGLES, DRAWING THE MAT IN A DIRECTION AT RIGHT ANGLES TO THE GENERAL LAY OF THE FILAMENTS TO EXPAND THE MAT, APPLYING A MINOR PROPORTION OF AN UNSET BINDER TO THE MAT BETWEEN THE TIME THAT THE MAT IS PARTLY FORMED AND THE TIME WHEN IT HAS BEEN PARTLY EXPANDED, CONTINUING THE DRAWING THE MAT WET WITH SUCH BINDER ON IT UNTIL THE LAYERS OF THE MAT ASSUME A CORRUGATED OR UNDULATORY FROM, APPLYING ADDITIONAL UNSET BINDER TO THE MAT AND SETTING THE BINDER.
Claim 2
Independent Claim
116 words
THE METHOD COMPRISING FORMING A MAT OF A PLURALITY OF LAYERS OF FILAMENTS, WITH THE FILAMENTS EXTENDING GENERALLY TRANSVERSELY OF THE MAT AND WITH THE FILAMENTS OF ADJACENT LAYERS CROSSING AT ACUTE ANGLES, DRAWING THE MAT IN A DIRECTION AT RIGHT ANGLES TO THE GENERAL LAY OF THE FILAMENTS TO EXPAND THE MAT, APPLYING A MINOR PROPORTION OF AN UNSET BINDER TO THE MAT BETWEEN THE TIME THAT THE MAT IS PARTLY FORMED AND THE TIME WHEN IT HAS BEEN PARTLY EXPANDED, CONTINUING THE DRAWING THE MAT WET WITH SUCH BINDER ON IT UNTIL THE LAYERS OF THE MAT ASSUME A CORRUGATED OR UNDULATORY FROM, APPLYING ADDITIONAL UNSET BINDER TO THE MAT AND SETTING THE BINDER.
Claim 3
Dependent Claim
104 words
A PRODUCT COMPRISING A PLURALITY OF SUPERPOSED LAYERS OF GLASS FILAMENTS, WITH THE FILAMENTS OF ADJACENT LAYERS IN CROSSING RELATIONSHIP, THE LAYERS LYING SUBSTANTIALLY PARALLEL TO ONE ANOTHER AND EACH LAYER BEING APPROXIMATELY UNIFORM, CONTIGUOUS UNDULATIONS PROJECTING ABOVE AND BELOW THE MEDIAN PLANE OF THE LAYER AND EXTENDING AT AN ANGLE TO THE FILAMENT DIRECTIONS, SUPERPOSED LAYERS BEING TIED TOGETHER BY A MULTIPLICITY OF INTERCONNECTING FILAMENTS, A BINDER BONDING SAID FILAMENTS INTO A SUBSTANTIALLY UNITARY BODY, WITH THE CONCENTRATION OF BINDER BEING GREATER AT THE TOP OF SUCH PRODUCT THAN AT THE BOTTOM WHEREBY THE TOP SURFACE OF THE STRUCTURE IS STIFFENED AGAINST COLLAPSE.
Claim 4
Dependent Claim
104 words
A PRODUCT COMPRISING A PLURALITY OF SUPERPOSED LAYERS OF GLASS FILAMENTS, WITH THE FILAMENTS OF ADJACENT LAYERS IN CROSSING RELATIONSHIP, THE LAYERS LYING SUBSTANTIALLY PARALLEL TO ONE ANOTHER AND EACH LAYER BEING APPROXIMATELY UNIFORM, CONTIGUOUS UNDULATIONS PROJECTING ABOVE AND BELOW THE MEDIAN PLANE OF THE LAYER AND EXTENDING AT AN ANGLE TO THE FILAMENT DIRECTIONS, SUPERPOSED LAYERS BEING TIED TOGETHER BY A MULTIPLICITY OF INTERCONNECTING FILAMENTS, A BINDER BONDING SAID FILAMENTS INTO A SUBSTANTIALLY UNITARY BODY, WITH THE CONCENTRATION OF BINDER BEING GREATER AT THE TOP OF SUCH PRODUCT THAN AT THE BOTTOM WHEREBY THE TOP SURFACE OF THE STRUCTURE IS STIFFENED AGAINST COLLAPSE.
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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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |