Patent US3757482A successfully refreshed from Google Patents.
US3757482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich slab construction and anchor therefor
Assignee: Individual
•
Filing: 1971-02-22
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Granted: 1973-09-11
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Expires: 1991-02-22
Abstract
Abstract A sandwich-slab structure has a front concrete plate and a rear concrete plate which are generally coextensive and sandwich a layer of insulating material, e.g., a sheet or plate of foamed synthetic resin, between them. The layer of insulation is traversed by a plurality of connectors or anchors in the form of tubules or sleeves having opposite ends received in the concrete plates and provided with transverse formations for anchoring the sleeve in each concrete plate, preferably by engagement with a reinforcing mat.
Inventors
- 👤 E Haeussler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:17
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/044; E04C5/00; E04C5/16; E04C5/168; E04C2002/045; E04C2002/046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A sandwich slab comprising a pair of spaced generally parallel concrete plates, a layer of insulation sandwiched between said plates; at least one tubular anchor extending through said layer of insulation and lodged at opposite extremities in said concrete plates, said tubular anchor being provided at least at one extremity lodged in a respective plate with means positively anchoring the plate thereto, said means including at least two pairs of opposing holes formed in said tubular anchor and a respective rod traversing the holes of each of said pairs and projecting transversely from the tubular anchor into the concrete of the respective plates, the pairs of holes and rods being relatively staggered angularly; and a latticework of reinforcing bars in the plate interengaging with said rods.
Claim 2
Dependent Claim
126 words
A sandwich slab comprising a pair of spaced generally parallel concrete plates, a layer of insulation sandwiched between said plates; at least one tubular anchor extending through said layer of insulation and lodged at opposite extremities in said concrete plates, said tubular anchor being provided at least at one extremity lodged in a respective plate with means positively anchoring the plate thereto, said means including at least two pairs of opposing holes formed in said tubular anchor and a respective rod traversing the holes of each of said pairs and projecting transversely from the tubular anchor into the concrete of the respective plates, the pairs of holes and rods being relatively staggered angularly; and a latticework of reinforcing bars in the plate interengaging with said rods.
Claim 3
Dependent Claim
171 words
A sandwich slab comprising a pair of spaced generally parallel concrete plates, a layer of insulation sandwiched between said plates, and at least one tubular anchor extending through said layer of insulation and lodged at opposite extremities in said concrete plates, said tubular anchor being provided at each extremity lodged in a respective plate with means positively anchoring the plate thereto, said means including holes formed in said tubular anchor and a rod traversing said holes and projecting transversely from the tubular anchor into the concrete of the respective plates, each of said plates having a respective lattice-work of reinforcing bars, said rod engaging said bars, said tubular anchor being provided at each extremity with a pair of axially spaced rows of such holes and the holes of the rows of each pair being staggered angularly with respect to the holes of the other row of the respective pair, at least one such rod traversing the holes of each row and said rods lying on opposite sides of the respective latticework.
Claim 4
Dependent Claim
171 words
A sandwich slab comprising a pair of spaced generally parallel concrete plates, a layer of insulation sandwiched between said plates, and at least one tubular anchor extending through said layer of insulation and lodged at opposite extremities in said concrete plates, said tubular anchor being provided at each extremity lodged in a respective plate with means positively anchoring the plate thereto, said means including holes formed in said tubular anchor and a rod traversing said holes and projecting transversely from the tubular anchor into the concrete of the respective plates, each of said plates having a respective lattice-work of reinforcing bars, said rod engaging said bars, said tubular anchor being provided at each extremity with a pair of axially spaced rows of such holes and the holes of the rows of each pair being staggered angularly with respect to the holes of the other row of the respective pair, at least one such rod traversing the holes of each row and said rods lying on opposite sides of the respective latticework.
Claim 5
Dependent Claim
17 words
The slab defined in claim 2 wherein said tubular anchor has the configuration of a conic section.
Claim 6
Dependent Claim
12 words
The slab defined in claim 3 wherein said tubular anchor is conical.
Claim 7
Dependent Claim
18 words
The slab defined in claim 2 wherein said tubular anchor has a cross-section corresponding to a regular polygon.
Claim 8
Dependent Claim
18 words
The slab defined in claim 2, further comprising a plug of thermal insulation received in said tubular anchor.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |