Patent US3710530A successfully refreshed from Google Patents.
US3710530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for supporting a lowered false ceiling consisting of plates and provided with a current supply rail
Assignee: Nokia Oyj
•
Filing: 1971-04-19
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Granted: 1973-01-16
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Expires: 1991-04-19
Abstract
Abstract A device for supporting the plates of a lowered ceiling comprising spaced current supply rails. The device comprises two separate L-shaped bars locked detachably on opposite sides of the supply rail and U-shaped locking brackets arranged in saddle like manner upon said support bars at spaced positions along said supply rail.
Inventors
- 👤 R Valtonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:45
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/064; F; F21; F21V; F21V21/00; F21V21/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A. device for supporting a lowered false ceiling consisting of plates, which false ceiling comprises at least one elongated current supply rail (1;21) which is provided with laterally protruding flanges for supporting said plates (10), characterized in that it comprises two separate L-shaped support bars (6;26) positioned on opposite sides of the current supply rail, whereby one flange (6b) of each bar is arranged to be pressed against the side surface (3a) of the current supply rail and is fitted with fastening devices (7;27) engageing the current supply rail to prevent the support bar from being displaced in the direction of said side surface (3a), and at least one U-shaped locking bracket (9;29) which by means of its branches (9a, 9b) surrounds said flanges (6b) of the support bars to prevent the support bars to be displaced in a direction perpendicular to said side surfaces of the current supply rail.
Claim 2
Dependent Claim
150 words
A. device for supporting a lowered false ceiling consisting of plates, which false ceiling comprises at least one elongated current supply rail (1;21) which is provided with laterally protruding flanges for supporting said plates (10), characterized in that it comprises two separate L-shaped support bars (6;26) positioned on opposite sides of the current supply rail, whereby one flange (6b) of each bar is arranged to be pressed against the side surface (3a) of the current supply rail and is fitted with fastening devices (7;27) engageing the current supply rail to prevent the support bar from being displaced in the direction of said side surface (3a), and at least one U-shaped locking bracket (9;29) which by means of its branches (9a, 9b) surrounds said flanges (6b) of the support bars to prevent the support bars to be displaced in a direction perpendicular to said side surfaces of the current supply rail.
Claim 3
Dependent Claim
62 words
A device according to claim 1, characterized in that the side surfaces (3a) of the current supply rail (1) have longitudinal projecting ribs (8) and that the support bars (6) each have at least one groove (7) corresponding to said ribs, into which groove the rib penetrates when the support bar is pressed against the side surface of the current supply rail.
Claim 4
Dependent Claim
57 words
A device according to claim 1, characterized in that the side surfaces of the current supply rail (21) have longitudinal grooves (28) and that the support bars (26) each have a rib (27) corresponding to said grooves and penetrating into one groove when the support bar is pressed against the side surface of the current supply rail.
Claim 5
Dependent Claim
27 words
A device according to claim 2, characterized in that the locking bracket (9) consists of an U-shaped integral part having parallel branches (9a) with smooth inner surfaces.
Claim 6
Dependent Claim
24 words
A device according to claim 2, characterized in that the locking bracket (29) consists of two halves detachably fastened to each other (29a, 29b).
Claim 7
Dependent Claim
58 words
A device according to claim 5, characterized in that the inner surface of each half (29a, 29b) of the locking bracket (29) has a projecting rib (30) and that the support bars (26) each have a groove (31) corresponding to the rib, into which groove the rib penetrates when the locking bracket is pressed against the support bars.
Claim 8
Dependent Claim
27 words
A device according to claim 3, characterized in that the locking bracket (9) consists of an U-shaped integral part having parallel branches (9a) with smooth inner surfaces.
Claim 9
Dependent Claim
24 words
A device according to claim 3, characterized in that the locking bracket (29) consists of two hAlves detachably fastened to each other (292, 296).
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |