Patent US3965639A successfully refreshed from Google Patents.
US3965639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam-reinforced ceiling panels
Assignee: United States Gypsum Co
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Filing: 1975-02-03
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Granted: 1976-06-29
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Expires: 1995-02-03
Abstract
Abstract An extra-wide ceiling panel and ceiling constructed therefrom characterized by a reinforcing member extending along the back surface thereof, the member being generally flat with negligible vertical extension so as not to interfere with the stacking of such panels. Means are provided for further reinforcing the member with a beam characterized by extending generally perpendicular to the reinforcing member.
Inventors
- 👤 Edward J. Boarini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:59
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A reinforced ceiling panel comprising a generally flat sheet having a front surface, a back surface, and opposite edge surfaces; an elongate reinforcing member extending from one of said edge surfaces to the opposite edge surface between the remaining edge surfaces, said reinforcing member being secured along substantially its entire length flat against said back surface; and a beam member secured to said reinforcing member so as to project from said back surface, one of said reinforcing member and said beam member being provided with apertures and the other of said members being provided with outwardly extending connecting means for releasably engaging said apertures to connect said members together; whereby said beam member reinforces said sheet.
Claim 2
Dependent Claim
116 words
A reinforced ceiling panel comprising a generally flat sheet having a front surface, a back surface, and opposite edge surfaces; an elongate reinforcing member extending from one of said edge surfaces to the opposite edge surface between the remaining edge surfaces, said reinforcing member being secured along substantially its entire length flat against said back surface; and a beam member secured to said reinforcing member so as to project from said back surface, one of said reinforcing member and said beam member being provided with apertures and the other of said members being provided with outwardly extending connecting means for releasably engaging said apertures to connect said members together; whereby said beam member reinforces said sheet.
Claim 3
Dependent Claim
34 words
The panel as defined in claim 1, wherein said connecting means include teeth projecting from the beam member along one edge thereof, of a size and spacing respectively corresponding to that of said apertures.
Claim 4
Dependent Claim
41 words
The panel as defined in claim 1, and further including means projecting from at least one side of said beam at one edge thereof for resisting rotation of said beam out of a plane which is perpendicular to said reinforcing member.
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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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |