US3885370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling structure
Assignee: KAARINA HIRVENSALO
•
Filing: 1974-03-22
•
Granted: 1975-05-27
•
Expires: 1994-03-22
Abstract
Abstract A fire-resistant ceiling structure which is insulative to heat and sound, comprises a supporting structure with a ceiling suspended therefrom and made of boards of mineral wool, wool glass or the like. The ceiling is formed by attaching the boards to each other at their edges with a bonding agent, and in the joints between the boards are embedded supporting members for suspending the ceiling from the supporting structure.
Inventors
- 👤 Erkki Olli Yrjana Hirvensalo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:23
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/22; E04B9/001; E04B9/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
175 words
A heat and sound-insulating ceiling structure suspended from a supporting structure, comprising a slab constituted of mineral wool boards which are heat and sound insulative and composed of fibrous material which is heat-resistant and flameproof, and means forming joints binding the boards to each other at their edges, said means consisting essentially of a heatresistant bonding agent extending substantially from the upper to the lower surfaces of adjacent boards, the bonding agent penetrating into the boards at said edges to rigidify the same and provide bending continuity of the slab at the joint, and supporting means embedded in said bonding agent, said slab being suspended from the supporting structure solely through the intermediary of said supporting means, said supporting means having upper margins which extend above the slab, and lower margins extending into the respective joints to a distance above the lower surface of the boards, said lower margins of said supporting means being covered by said bonding agent, only the bonding agent in said joints being exposed at the lower surfaces of the boards.
Claim 2
Dependent Claim
175 words
A heat and sound-insulating ceiling structure suspended from a supporting structure, comprising a slab constituted of mineral wool boards which are heat and sound insulative and composed of fibrous material which is heat-resistant and flameproof, and means forming joints binding the boards to each other at their edges, said means consisting essentially of a heatresistant bonding agent extending substantially from the upper to the lower surfaces of adjacent boards, the bonding agent penetrating into the boards at said edges to rigidify the same and provide bending continuity of the slab at the joint, and supporting means embedded in said bonding agent, said slab being suspended from the supporting structure solely through the intermediary of said supporting means, said supporting means having upper margins which extend above the slab, and lower margins extending into the respective joints to a distance above the lower surface of the boards, said lower margins of said supporting means being covered by said bonding agent, only the bonding agent in said joints being exposed at the lower surfaces of the boards.
Claim 3
Dependent Claim
20 words
A ceiling structure according to claim 1 wherein the supporting means comprises strips which are perforated at their lower margins.
Claim 4
Dependent Claim
55 words
A ceiling structure according to claim 1 comprising a surfacing layer on said supporting structure, said surfacing layer including a plurality of overlapped sheets, the supporting means being fixed to the surfacing layer where adjacent sheets of the surfacing layer overlap, such that the slab serves to attach the sheets of the surfacing layer together.
Claim 5
Dependent Claim
21 words
A ceiling structure according to claim 1 wherein the bonding agent binding the bOards together is resistant to moisture and acids.
Claim 6
Dependent Claim
24 words
A ceiling structure according to claim 1 comprising a surface coating on the lower surface of the insulating boards covering the boards and joints.
Claim 7
Dependent Claim
17 words
A ceiling structure according to claim 5 wherein said coating is a plate attached to the slab.
Claim 8
Dependent Claim
14 words
A ceiling structure according to claim 5 wherein said coating is a spray layer.
Claim 9
Dependent Claim
29 words
A ceiling structure as claimed in claim 1 comprising strips of fibrous material which are heat-resistant and flameproof bonded to the slab to extend along and cover said joints.
Claim 10
Dependent Claim
23 words
A ceiling structure as claimed in claim 8 wherein said strips are bonded to the slab by means of said heat-resistant bonding agent.
Claim 11
Dependent Claim
18 words
A ceiling structure as claimed in claim 1 wherein said edges of the boards are flat, continuous surfaces.
Claim 12
Dependent Claim
19 words
A ceiling structure as claimed in claim 10 wherein the edges of adjacent boards are parallel to one another.
Claim 13
Dependent Claim
22 words
A ceiling structure as claimed in claim 1 wherein said supporting means is perforate where it is embedded in said bonding agent.
Claim 14
Dependent Claim
29 words
A ceiling structure as claimed in claim 1 wherein said supporting means extends to a depth in the bonding agent not more than one-half the thickness of the boards.
Claim 15
Dependent Claim
33 words
A ceiling structure as claimed in claim 1 wherein said supporting means comprises a wire embedded in said joint and including locally deformed portions extending above the slab and constituting said upper margins.
Claim 16
Dependent Claim
33 words
A ceiling structure as claimed in claim 1 wherein said supporting means comprises spaced elements embedded in the joints and including respective individual portions extending above the slab and constituting said upper margins.
Claim 17
Dependent Claim
14 words
A ceiling structure as claimed in claim 15 wherein said spaced elements are plates.
Claim 18
Dependent Claim
18 words
A ceiling structure as claimed in claim 15 wherein said spaced elements are wires bent to triangular form.
Claim 19
Dependent Claim
17 words
A ceiling structure as claimed in claim 1 wherein said supporting means comprises strips of net construction.
Claim 20
Dependent Claim
31 words
A ceiling structure as claimed in claim 1 wherein said supporting means comprises strips whose upper margins are constituted as solid plates and whose lower margins are of expanded lattice-like construction.
References Cited (Backward Citations)
US2128308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |