Patent US3017947A successfully refreshed from Google Patents.
US3017947A
Expired / Lapsed
US
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Acoustical material and method of making the same
Assignee: Armstrong World Industries Inc
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Filing: 1957-06-18
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Granted: 1962-01-23
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:30
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; D; D21; D21J; D21J1/00; E04B2001/8245; E04B2001/8457; E04B2001/8476; E04B2001/848; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD OF PRODUCING SOUND ABSORBING MATERIAL, THE STEPS COMPRISING FORMING A WATER-LAID MAT OF FIBROUS MATERIAL WITH SUITABLE BINDER CONSTITUENTS, DRYING SAID MAT TO FORM A SHEET OF INTERTWINED FIBERS HAVING SOUND ABSORBING INTERSTICES THROUGHOUT AND HAVING A RELATIVELY SMOOTH IMPERVIOUS SURFACE, COATING ONE FLAT SURFACE OF SAID SHEET WITH A DARK DYE, URGING A PLURALITY OF IRREGULARLY SHAPED ELONGATED PROJECTIONS INTO ENGAGEMENT WITH THE DYED SURFACE OF SAID SHEET TO PUSH CERTAIN AREAS OF SAID SURFACE INTO THE BODY OF THE SHEET EXPOSING SOUND ABSORBING INTERSTICES IN THE INTERIOR OF THE SHEET AND FORMING IRREGULARLY SHAPED ELONGATED OPENINGS ON THE SURFACE OF SAID SHEET, AND SIMULTANEOUS WITH THE FORCING OF THE IRREGULARLY SHAPED ELONGATED PROJECTIONS INTO THE SURFACE OF THE SHEET EMBOSSING A PATTERN ON THE BACK OF SAID SHEET.
Claim 2
Independent Claim
132 words
A METHOD OF PRODUCING SOUND ABSORBING MATERIAL, THE STEPS COMPRISING FORMING A WATER-LAID MAT OF FIBROUS MATERIAL WITH SUITABLE BINDER CONSTITUENTS, DRYING SAID MAT TO FORM A SHEET OF INTERTWINED FIBERS HAVING SOUND ABSORBING INTERSTICES THROUGHOUT AND HAVING A RELATIVELY SMOOTH IMPERVIOUS SURFACE, COATING ONE FLAT SURFACE OF SAID SHEET WITH A DARK DYE, URGING A PLURALITY OF IRREGULARLY SHAPED ELONGATED PROJECTIONS INTO ENGAGEMENT WITH THE DYED SURFACE OF SAID SHEET TO PUSH CERTAIN AREAS OF SAID SURFACE INTO THE BODY OF THE SHEET EXPOSING SOUND ABSORBING INTERSTICES IN THE INTERIOR OF THE SHEET AND FORMING IRREGULARLY SHAPED ELONGATED OPENINGS ON THE SURFACE OF SAID SHEET, AND SIMULTANEOUS WITH THE FORCING OF THE IRREGULARLY SHAPED ELONGATED PROJECTIONS INTO THE SURFACE OF THE SHEET EMBOSSING A PATTERN ON THE BACK OF SAID SHEET.
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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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |