US4083157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False ceiling or wall
Assignee: Normalu SAS
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Filing: 1976-05-10
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Granted: 1978-04-11
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Expires: 1996-05-10
Abstract
Abstract A false ceiling or wall comprising a frame which can be fixed to the edges of a ceiling or wall and is adapted to hold a sheet having a rigid edge. The frame includes a rail having an abutment thereon and shoulder forming a free space therebetween to receive a rigid edge of the sheet. The rigid edge of the sheet has a hook shape which engages the shoulder when in place, and the shoulder extends in a direction to that in which the sheet material exerts tension.
Inventors
- 👤 Camille Anthonioz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:16
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/30; E04B9/303; B; B44; B44C; B44C7/00; B44C7/02; B44C7/022
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
217 words
A false ceiling or wall, comprising: a frame adapted to be fixed to the edges of a ceiling or a wall, said frame including a pair of angularly related flanges, an abutment on one of said flanges, and a rail having a shoulder connected with one of said flanges and extending in the direction of the other and forming a free space between said abutment and itself; a cloth sheet having a rigid edge engaged in said frame and received within said free space, said rigid edge of said sheet having a hook-shaped portion which when in place engages said shoulder; said rail including means to facilitate the engagement of said rigid edge with said shoulder by movement of said rigid edge over said shoulder by external means; said facilitating means including notches cut out of the shoulder in each corner of the ceiling or wall, said notches being close to the vertices of the corner to engage said rigid edge on the whole length of said rail; and, said shoulder extending in a direction opposite to that in which said sheet will exert tension and together with said abutment prevents said hook-shaped portion from being pulled around said shoulder and dislodging said rigid edge from said shoulder by the effect of strong tension in said sheet.
Claim 2
Dependent Claim
217 words
A false ceiling or wall, comprising: a frame adapted to be fixed to the edges of a ceiling or a wall, said frame including a pair of angularly related flanges, an abutment on one of said flanges, and a rail having a shoulder connected with one of said flanges and extending in the direction of the other and forming a free space between said abutment and itself; a cloth sheet having a rigid edge engaged in said frame and received within said free space, said rigid edge of said sheet having a hook-shaped portion which when in place engages said shoulder; said rail including means to facilitate the engagement of said rigid edge with said shoulder by movement of said rigid edge over said shoulder by external means; said facilitating means including notches cut out of the shoulder in each corner of the ceiling or wall, said notches being close to the vertices of the corner to engage said rigid edge on the whole length of said rail; and, said shoulder extending in a direction opposite to that in which said sheet will exert tension and together with said abutment prevents said hook-shaped portion from being pulled around said shoulder and dislodging said rigid edge from said shoulder by the effect of strong tension in said sheet.
Claim 3
Dependent Claim
77 words
A false ceiling or wall as claimed in claim 1, wherein the edge of the sheet is harpoon-like and comprises a thin first part bonded to the sheet and extending beyond the cloth and terminating in a thicker second part in the form of a bead which, together with the first part, defines therebetween a groove open towards the sheet and in which the rail shoulder may be housed when the cloth is stretched onto the frame.
Claim 4
Dependent Claim
24 words
A false ceiling or wall as claimed in claim 2, wherein said first part of the edge is high frequency welded to the sheet.
Claim 5
Dependent Claim
25 words
A false ceiling or wall as claimed in claim 2, wherein second part of the edge is of rounded shape and has no sharp corners.
Claim 6
Dependent Claim
46 words
A false ceiling or wall as claimed in claim 2, wherein said an abutment is on said one flange behind the shoulder against which the bead will strike and be halted should this latter be pulled round by the effect of strong tension in the sheet.
Claim 7
Dependent Claim
44 words
A false ceiling or wall as claimed in claim 1, wherein the edge of the sheet is constructed of a really resilient plastics material, the cross-section of which has a shape which is constant, both before and after its positioning on the rail shoulder.
Claim 8
Dependent Claim
53 words
A false ceiling or wall as claimed in claim 1, wherein the rail is of inverted T form and is fixed by its central web to the wall or ceiling, and comprises on the two opposing flanges perpendicular to the web, respective shoulders parallel to the flanges and turned towards the central web.
Claim 9
Dependent Claim
48 words
A false ceiling and wall as claimed in claim 1, wherein the rail comprises two shoulders which are horizontally and vertically directed, respectively, the horizontal shoulder being for receiving a sheet forming a false ceiling, and the vertical shoulder being for receiving a sheet forming a false wall.
Claim 10
Dependent Claim
58 words
A false ceiling or wall as claimed in claim 1, wherein: said facilitating means includes notches cut out of said shoulder between said corner notches; and, said external means is a spatula adapted to engage said rigid edge of said sheet and slide along said shoulder for engagement of the whole of said rigid edge with said shoulder.
Claim 11
Dependent Claim
68 words
A false ceiling or wall as claimed in claim 1, wherein: said harpoon edge includes a thin part fixed with said sheet and a thick part connected with said thin part and having its free end extending in a reverse direction towards said sheet and forming therebetween a groove which opens towards the center of said sheet; and, said shoulder being received in said groove and bearing thereagainst.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |