Patent US3918230A successfully refreshed from Google Patents.
US3918230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building deck construction
Assignee: Decks Inc
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Filing: 1974-10-18
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Granted: 1975-11-11
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Expires: 1994-10-18
Abstract
Abstract A poured building deck structure having sheet metal structural shapes of a box section as sub-purlins, the upper face of the box section having open slots for engaging sheet metal clips which are secured in the box section when the axis of the clip and the box section are about 90* to each other, the clip engaging and holding formboard adjacent the top face of the box section and the clips then extending substantially vertically upward and then extending substantially horizontally engaging the poured concrete above the formboard to provide uplift resistance to the composite structure. The poured building deck structure of this invention is extremely versatile providing a very economical insulating and fireproof poured gypsum deck structure. The combination structure of this invention permits the use of thinner formboard and thinner concrete, providing lighter weight decks than previously available.
Inventors
- 👤 Frank E Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:40
CPC Classifications
E; E04; E04B; E04B7/00; E04D; E04D11/00; E04D11/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
196 words
A pouRed building deck structure comprising the combination: structural purlins; sub-purlins of sheet metal structural shapes of a box section having a horizontal base, opposing vertical sides and upper horizontal flanges extending inwardly from the top of said sides forming an open slot between the terminus of said flanges, saud sub-purlins at right angles to and said base resting on top of said purlins; formboard adjacent to and secured against the top of said upper horizontal flanges of said subpurlins; sheet metal clips having a vertical portion extending upwardly and downwardly from opposing slots, each of said opposing slots engaging one of said horizontal flanges of said box section when the axis of said clip and box section are at about 90* to each other, said upwardly extending vertical portion bending to a horizontal portion to engage the top of said formboard securing it against the top of said flanges, then bending to a substantially vertical upward portion and then bending to a substantially horizontal portion to provide uplift resistance when surrounded by concrete; reinforcing mesh over the top of said clips; and poured concrete above said formboard and engaging the upper portion of said clips.
Claim 2
Dependent Claim
196 words
A pouRed building deck structure comprising the combination: structural purlins; sub-purlins of sheet metal structural shapes of a box section having a horizontal base, opposing vertical sides and upper horizontal flanges extending inwardly from the top of said sides forming an open slot between the terminus of said flanges, saud sub-purlins at right angles to and said base resting on top of said purlins; formboard adjacent to and secured against the top of said upper horizontal flanges of said subpurlins; sheet metal clips having a vertical portion extending upwardly and downwardly from opposing slots, each of said opposing slots engaging one of said horizontal flanges of said box section when the axis of said clip and box section are at about 90* to each other, said upwardly extending vertical portion bending to a horizontal portion to engage the top of said formboard securing it against the top of said flanges, then bending to a substantially vertical upward portion and then bending to a substantially horizontal portion to provide uplift resistance when surrounded by concrete; reinforcing mesh over the top of said clips; and poured concrete above said formboard and engaging the upper portion of said clips.
Claim 3
Dependent Claim
30 words
The building deck structure of claim 1 wherein said formboard is selected from the group consisting of felted rock wool materials, moisture permeable gypsum, moisture impermeable gypsum and fiber glass.
Claim 4
Dependent Claim
13 words
The building deck structure of claim 2 wherein said formboard is gypsum formboard.
Claim 5
Dependent Claim
14 words
The building deck structure of claim 3 wherein said gypsum formboard is moisture impermeable.
Claim 6
Dependent Claim
23 words
The building deck structure of claim 1 wherein said concrete is selected from the group consisting of gypsum and Portland cement containing fillers.
Claim 7
Dependent Claim
27 words
The building deck structure of claim 1 wherein a synthetic organic polymer foam is placed on top of said formboard and said concrete poured over said foam.
Claim 8
Dependent Claim
19 words
The building deck structure of claim 6 wherein said foam is about 1 inch to about 6 inches thick.
Claim 9
Dependent Claim
29 words
The building deck structure of claim 6 wherein said formboard is water impermeable and said deck structure is further provided with a ventilator providing a primarily top drying system.
Claim 10
Dependent Claim
46 words
The building deck structure of claim 6 wherein said foam is selected from the group consisting of polystyrene, styrene-maleic anhydride, phenolic, such as phenol formaldehyde, polyurethane, vinyl, such as polyvinyl chloride and copolymers of polyvinyl chloride and polyvinyl acetate, epoxy, polyethylene, urea formaldehyde, acrylic and polyisocyanurate.
Claim 11
Dependent Claim
20 words
The building deck structure of claim 9 wherein said foam is selected from the group consisting of polystyrene and polyurethane.
Claim 12
Dependent Claim
39 words
The building deck structure of claim 1 wherein a built up roofing membrane comprising alternate layers of roofing felt and hot asphalt with a waterproof wearing surface of tar and gravel on top is placed over said poured concrete.
Claim 13
Dependent Claim
24 words
The building deck structure of claim 1 wherein the spacing of said sheet metal structural shapes is about 12 inches to about 36 inches.
Claim 14
Dependent Claim
35 words
The building deck structure of claim 1 wherein said formboard has a thickness of about one-fourth inch to about 2 inches and said concrete has a thickness of about 1 inch to about 4 inches.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |