Patent US4487586A successfully refreshed from Google Patents.
US4487586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Framed board with writing surface
Assignee: ALLIANCE EUROPE SA
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Filing: 1982-11-12
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Granted: 1984-12-11
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Expires: 2002-11-12
Abstract
Abstract A board intended to be used as a writing surface is provided with a frame and with a complementary border constituting one inseparable entity. The frame is continuous all around the periphery with a cross-section comprising three flanges. One flange is external to the other two, a second flange is equipped with a rim positioned behind the board and bearing against a foot formed on the complementary border, and the third flange bears against the front face of the board.
Inventors
- 👤 Jos Palmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
B; B43; B43L; B43L1/00; B43L1/02; A; A47; A47G; A47G1/00; A47G1/06; B43L5/00; B43L5/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
Apparatus comprising a board, a frame for said board, and a complementary border forming an inseparable entity with said board and frame, said board being intended to be used as writing surface, said frame being continuous all around the periphery of said board and being formed with at least two flanges disposed at an angle relative to each other, one of said flanges supporting one face of the board and the other flange being formed with an inwardly projecting rim, the complementary border having a U-section including two arms which bear against the other face of the board, one of said arms being formed with an outwardly projecting foot, said rim engaging said foot to lock said border to said frame, at least one of the flanges providing elasticity, so that the frame, after the board has been inserted therein, grips the board securely.
Claim 2
Dependent Claim
144 words
Apparatus comprising a board, a frame for said board, and a complementary border forming an inseparable entity with said board and frame, said board being intended to be used as writing surface, said frame being continuous all around the periphery of said board and being formed with at least two flanges disposed at an angle relative to each other, one of said flanges supporting one face of the board and the other flange being formed with an inwardly projecting rim, the complementary border having a U-section including two arms which bear against the other face of the board, one of said arms being formed with an outwardly projecting foot, said rim engaging said foot to lock said border to said frame, at least one of the flanges providing elasticity, so that the frame, after the board has been inserted therein, grips the board securely.
Claim 3
Dependent Claim
71 words
Apparatus according to claim 1 characterized in that one of said flanges is formed with an extension parallel to the external surface of the board and forms a stop for it, further comprising a third flange formed on said frame, said third flange being parallel to the other of said two flanges, and a plurality of braces at spaced-apart locations around the perimeter of the frame defining a plurality of cells.
Claim 4
Dependent Claim
28 words
Apparatus according to claim 2 characterized in that the complementary border comprises, at spaced-apart locations around its external perimeter, a plurality of feet respectively insertable into said cells.
Claim 5
Dependent Claim
41 words
Apparatus according to any one of claims 1-3 characterized in that said arms are spaced apart one from the other to define therebetween a peripheral strip, further comprising means operatively associated with said strip for attaching the board to a wall.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4 further comprising housing means formed at spaced-apart locations of the strip and elastic buffers mounted in said housing means.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 3 characterized in that the number of said cells exceeds the number of said feet, whereby at least some of said cells can accommodate hinge means for connecting said apparatus to additional such apparatus.
References Cited (Backward Citations)
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Cited
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US3150457A
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US3235990A
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US3363341A
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US3523382A
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |