Patent US3745734A successfully refreshed from Google Patents.
US3745734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint construction for ceiling panels
Assignee: Armstrong World Industries Inc
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Filing: 1971-06-16
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Granted: 1973-07-17
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Expires: 1991-06-16
Abstract
Abstract An improved joint structure for a strip concealing means which covers fasteners that hold a ceiling panel in position. Angled grooves are provided in a ceiling board for receiving a strip. Between the angled grooves, staples are placed to fasten the board in position, and the strip is placed in the grooves to conceal the staples.
Inventors
- 👤 J Davey
- 👤 C Gilbo
- 👤 N Johnson
- 👤 T Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:03
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/02; E04F19/06; E04F19/062; E04B; E04B9/00; E04B9/22; E04B9/24; E04B9/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A surface panel assembly comprising a panel having parallel front and rear wall surfaces and having a region into which staples may be passed to fasten the surface panel to an underlying support structure, a recessed area in the board structure on either side of the region to receive the staples, each of the recess areas having a groove which extends parallel with the groove on the opposite side of the area to receive staples and partly under the surface of the front wall surface, the planes of the two groove structures are not coextensive and, if extended, the planes would extend into the area above the region to receive the staples, said planes of the two groove structures extend at an angle of approximately 13* from the plane of the region receiving the staples and the front wall structure of the panel assembly, and a strip with flanges positioned in each of the groove structures and a center portion which overlies the area which receives staples.
Claim 2
Dependent Claim
167 words
A surface panel assembly comprising a panel having parallel front and rear wall surfaces and having a region into which staples may be passed to fasten the surface panel to an underlying support structure, a recessed area in the board structure on either side of the region to receive the staples, each of the recess areas having a groove which extends parallel with the groove on the opposite side of the area to receive staples and partly under the surface of the front wall surface, the planes of the two groove structures are not coextensive and, if extended, the planes would extend into the area above the region to receive the staples, said planes of the two groove structures extend at an angle of approximately 13* from the plane of the region receiving the staples and the front wall structure of the panel assembly, and a strip with flanges positioned in each of the groove structures and a center portion which overlies the area which receives staples.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |