US3083756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Board-forming machine
Assignee: United States Gypsum Co
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Filing: 1959-03-30
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Granted: 1963-04-02
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Page John
- 👤 Robert E Mccleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:32
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/0092; D; D21; D21F; D21F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
A MACHINE FOR FORMING BOARD HAVING A GYPSUM CORE, AND BOTTOM AND TOP LAMINAE OF FIBROUS MATERIAL, SAID MACHINE COMPRISING A CONTINUOUS BOARD-FORMING FIRST SECTION AND A BOARD-CONVEYING SECOND SECTION ADJACENT SAID FIRST SECTION FOR EFFECTING CONTINUOUS REMOVAL OF BOARD FROM SAID FORMING SECTION; SAID FORMING SECTION COMPRISING A BED PLATE, AN ELONGATED ELEMENT SPACED ABOVE SAID PLATE, THE PERIPHERY OF SAID ELEMENT BEING ARCUATE AND COOPERATING WITH SAID PLATE TO FORM AN ELONGATED NARROW PASSAGEWAY THE LENGTH OF SAID ELEMENT, THE PORTION OF SAID PLATE DISPOSED BENEATH SAID ELEMENT AND FORMING SAID PASSAGEWAY BEING RETRACTABLE RELATIVE TO THE REMAINDER OF SAID PLATE; MEANS MOUNTING SAID PORTION OF SAID PLATE FOR SELECTIVE RETRACTION FROM SAID ELEMENT; MEANS FOR FEEDING THE BOTTOM LAMINA OVER SAID BED PLATE AND THROUGH SAID PASSAGEWAY IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE AXIS OF SAID ELEMENT; MEANS FOR DEPOSITING A CALCINED GYPSUM SLURRY ON THE BOTTOM LAMINA AT THE ENTRANCE TO SAID PASSAGEWAY; AND MEANS COOPERATING WITH SAID ELEMENT FOR FEEDING THE TOP LAMINA THROUGH SAID PASSAGEWAY WHEREBY A GYPSUM CORE OF PREDETERMINED THICKNESS IS FORMED BETWEEN THE LAMINAE; SAID SECOND SECTION COMPRISING ELONGATED MOVABLE MEANS HAVING A RECEIVING END THEREOF ADJACENT THE PASSAGEWAYFORMING PERIPHERAL SEGMENT OF SAID ELEMENT, SAID RECEIVING END BEING DISPOSED IN SUBSTANTIALLY COPLANAR RELATION WITH SAID BED PLATE,
Claim 2
Dependent Claim
217 words
A MACHINE FOR FORMING BOARD HAVING A GYPSUM CORE, AND BOTTOM AND TOP LAMINAE OF FIBROUS MATERIAL, SAID MACHINE COMPRISING A CONTINUOUS BOARD-FORMING FIRST SECTION AND A BOARD-CONVEYING SECOND SECTION ADJACENT SAID FIRST SECTION FOR EFFECTING CONTINUOUS REMOVAL OF BOARD FROM SAID FORMING SECTION; SAID FORMING SECTION COMPRISING A BED PLATE, AN ELONGATED ELEMENT SPACED ABOVE SAID PLATE, THE PERIPHERY OF SAID ELEMENT BEING ARCUATE AND COOPERATING WITH SAID PLATE TO FORM AN ELONGATED NARROW PASSAGEWAY THE LENGTH OF SAID ELEMENT, THE PORTION OF SAID PLATE DISPOSED BENEATH SAID ELEMENT AND FORMING SAID PASSAGEWAY BEING RETRACTABLE RELATIVE TO THE REMAINDER OF SAID PLATE; MEANS MOUNTING SAID PORTION OF SAID PLATE FOR SELECTIVE RETRACTION FROM SAID ELEMENT; MEANS FOR FEEDING THE BOTTOM LAMINA OVER SAID BED PLATE AND THROUGH SAID PASSAGEWAY IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE AXIS OF SAID ELEMENT; MEANS FOR DEPOSITING A CALCINED GYPSUM SLURRY ON THE BOTTOM LAMINA AT THE ENTRANCE TO SAID PASSAGEWAY; AND MEANS COOPERATING WITH SAID ELEMENT FOR FEEDING THE TOP LAMINA THROUGH SAID PASSAGEWAY WHEREBY A GYPSUM CORE OF PREDETERMINED THICKNESS IS FORMED BETWEEN THE LAMINAE; SAID SECOND SECTION COMPRISING ELONGATED MOVABLE MEANS HAVING A RECEIVING END THEREOF ADJACENT THE PASSAGEWAYFORMING PERIPHERAL SEGMENT OF SAID ELEMENT, SAID RECEIVING END BEING DISPOSED IN SUBSTANTIALLY COPLANAR RELATION WITH SAID BED PLATE,
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |