US3241276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gypsum wallboard panels
Assignee: Big Horn Gypsum Co
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Filing: 1962-07-13
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Granted: 1966-03-22
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Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Norman W Vance
- 👤 Francis H Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
PANEL CEILING CONSTRUCTION, COMPRISING A SERIES OF CEILING JOISTS; GYPSUM WALLBOARD PANELS AFFIXED TO THE UNDERFACES OF SAID JOISTS IN CLOSE SIDE-BY-SIDE RELATIONSHIP, WITH ADJOINING EDGE FACES THEREOF PRESSED TIGHTLY TOGETHER AT LOCATIONS BETWEEN SAID JOISTS, THE UPPER EDGES OF SAID ADJOINING EDGE FACES BEING BEVELED TO FORM DOWNWARDLY TAPERED CHANNELS EXTENDING ALONG AND LEADING INTO THE RESPECTIVE INTERFACE ZONES BETWEEN SAID ADJOINING EDGE FACES; BACKING PIECES OVERLYING SAID PANELS AT AND BRIDGING THE LINES OF JOINDER BETWEEN ADJOINING PANELS; AND RIGIDLY SET ADHESIVE BONDING SAID BACKING PIECES TO THE UPPER SURFACES OF SAID PANELS, WITH PART OF SAID ADHESIVE DISPOSED IN SAID CHANNELS, THE LOWER SURFACES OF SAID PANELS BEING COVERED WITH SHEET MATERIAL GOOD QUALITY AS A FINISH FACING AND THE SAID UPPER SURFACES THEREOF BEING COVERED WITH SHEET MATERIAL OF RELATIVELY INFERIOR QUALITY AS A BACK FACING, THE LONGITUDINAL EDGES OF SAID LOWER SURFACES OF THE PANELS BEING RIGHT ANGULAR.
Claim 2
Dependent Claim
153 words
PANEL CEILING CONSTRUCTION, COMPRISING A SERIES OF CEILING JOISTS; GYPSUM WALLBOARD PANELS AFFIXED TO THE UNDERFACES OF SAID JOISTS IN CLOSE SIDE-BY-SIDE RELATIONSHIP, WITH ADJOINING EDGE FACES THEREOF PRESSED TIGHTLY TOGETHER AT LOCATIONS BETWEEN SAID JOISTS, THE UPPER EDGES OF SAID ADJOINING EDGE FACES BEING BEVELED TO FORM DOWNWARDLY TAPERED CHANNELS EXTENDING ALONG AND LEADING INTO THE RESPECTIVE INTERFACE ZONES BETWEEN SAID ADJOINING EDGE FACES; BACKING PIECES OVERLYING SAID PANELS AT AND BRIDGING THE LINES OF JOINDER BETWEEN ADJOINING PANELS; AND RIGIDLY SET ADHESIVE BONDING SAID BACKING PIECES TO THE UPPER SURFACES OF SAID PANELS, WITH PART OF SAID ADHESIVE DISPOSED IN SAID CHANNELS, THE LOWER SURFACES OF SAID PANELS BEING COVERED WITH SHEET MATERIAL GOOD QUALITY AS A FINISH FACING AND THE SAID UPPER SURFACES THEREOF BEING COVERED WITH SHEET MATERIAL OF RELATIVELY INFERIOR QUALITY AS A BACK FACING, THE LONGITUDINAL EDGES OF SAID LOWER SURFACES OF THE PANELS BEING RIGHT ANGULAR.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |