Patent US3325859A successfully refreshed from Google Patents.
US3325859A
Expired / Lapsed
US
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Apparatus for making rigid mineral fiber panels
Assignee: Celotex Corp
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Filing: 1961-12-04
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Granted: 1967-06-20
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/34; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/06; B29C43/00; B29C43/006; B29C43/32; B29C43/44; B29C43/48; B29C67/00; B29C67/24; B29C67/248; B29C67/249; B30B5/00; B30B5/04; B30B5/06; B29C35/045; B29K; B29K2709/00; B29K2709/08; B29K2709/12; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10S425/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN APPARATUS FOR MANUFACTURING A RIGID PANEL COMPRISING AN OVEN, CONVEYER MEANS EXTENDING INTO SAID OVEN FOR INTRODUCING A MAT OF INOROGANIC FIBER AND THERMOSETTING RESIN UNIFORMLY DISPERSED THROUGHOUT SAID MAT INTO SAID OVEN, PRESS MENAS FOR COMPACTING SAID MAT TO LESS THAN ITS ORIGINAL THICKNESS, SAID PRESS MEANS INCLUDING A PAIR OF GROUPS OF INTER/ LOCKED PLATENS, SAID PAIR OF GROUPS BEING MOUNTED AND ARRANGED SO THAT THE FACING SURFACES OF SAID GROUPS OF PLATENS ARE MAINTAINED IN SPACED PARALLEL HORIZONTAL PLANES, AND A PAIR OF WIRE SCREENS FORMING A PART OF SAID CONVEYOR MEANS, EACH OF SAID SCREENS BEING MOUNTED SO AS TO OVERLIE A RESPECTIVE ONE OF SAID PLANES FORMED BY SAID GROUPS OF PLATENS, AND IN WHICH EACH OF SAID SCREENS IS COARSER THAN 30 X 30 MESH AND FINER THAN 4 X 4 MESH.
Claim 2
Independent Claim
139 words
AN APPARATUS FOR MANUFACTURING A RIGID PANEL COMPRISING AN OVEN, CONVEYER MEANS EXTENDING INTO SAID OVEN FOR INTRODUCING A MAT OF INOROGANIC FIBER AND THERMOSETTING RESIN UNIFORMLY DISPERSED THROUGHOUT SAID MAT INTO SAID OVEN, PRESS MENAS FOR COMPACTING SAID MAT TO LESS THAN ITS ORIGINAL THICKNESS, SAID PRESS MEANS INCLUDING A PAIR OF GROUPS OF INTER/ LOCKED PLATENS, SAID PAIR OF GROUPS BEING MOUNTED AND ARRANGED SO THAT THE FACING SURFACES OF SAID GROUPS OF PLATENS ARE MAINTAINED IN SPACED PARALLEL HORIZONTAL PLANES, AND A PAIR OF WIRE SCREENS FORMING A PART OF SAID CONVEYOR MEANS, EACH OF SAID SCREENS BEING MOUNTED SO AS TO OVERLIE A RESPECTIVE ONE OF SAID PLANES FORMED BY SAID GROUPS OF PLATENS, AND IN WHICH EACH OF SAID SCREENS IS COARSER THAN 30 X 30 MESH AND FINER THAN 4 X 4 MESH.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |