US3890756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete reinforcement
Assignee: Individual
•
Filing: 1973-07-16
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Granted: 1975-06-24
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Expires: 1993-07-16
Abstract
Abstract A concrete reinforcement comprises a structural steel mat, a lattice girder with a single upper boom rod, a single lower boom rod and diagonal braces with bent ends supporting the longitudinal rods of the steel mat, and the lower boom rod carried by the transverse rods of the steel mat. A brace extends transversely to the plane defined by the girder booms to one of the longitudinal steel mat rods and props up one of the boom rods of the girder.
Inventors
- 👤 Edmund Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/06; E04C5/0636; E04C5/064
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
260 words
A reinforcement for an at least partially prefabricated reinforced concrete slab, comprising in combination: 1. two structural steel mats each comprising a plurality of longitudinally extending steel rods and a plurality of transversely extending steel rods substantially perpendicular to the longitudinal rods; 2. a plurality of planar lattice girders extending between the two mats and comprising only a single upper boom rod, a single lower boom rod and affixed thereto a plurality of braces extending diagonally between the upper and lower boom rods, the girder extending in the direction of the longitudinally extending steel rods of the mats; a. the said braces having bent terminating ends facing opposite the side to which the upper and lower boom rods are affixed, one terminating end partially encircling and thereby supporting a longitudinal rod of the structural steel mats, the opposite terminating end being hook-shaped, b. the lower boom rod being carried by the transverse rods of one of the structural steel mats, and c. the upper boom rod being in contact with the transverse rods of the steel mat spaced from the mat carrying the lower boom rod, and d. said plurality of planar lattice girders being spaced apart along the said structural steel mats; and 3. a plurality of tension rods each extending transversely to the plane defined by the booms affixed to one of the longitudinal rods of the one structural steel mat, the tension rod partially encircling and thereby supporting one of the boom rods, and 4. a pair of girders and tension rods being associated in mirror-image fashion.
Claim 2
Dependent Claim
260 words
A reinforcement for an at least partially prefabricated reinforced concrete slab, comprising in combination: 1. two structural steel mats each comprising a plurality of longitudinally extending steel rods and a plurality of transversely extending steel rods substantially perpendicular to the longitudinal rods; 2. a plurality of planar lattice girders extending between the two mats and comprising only a single upper boom rod, a single lower boom rod and affixed thereto a plurality of braces extending diagonally between the upper and lower boom rods, the girder extending in the direction of the longitudinally extending steel rods of the mats; a. the said braces having bent terminating ends facing opposite the side to which the upper and lower boom rods are affixed, one terminating end partially encircling and thereby supporting a longitudinal rod of the structural steel mats, the opposite terminating end being hook-shaped, b. the lower boom rod being carried by the transverse rods of one of the structural steel mats, and c. the upper boom rod being in contact with the transverse rods of the steel mat spaced from the mat carrying the lower boom rod, and d. said plurality of planar lattice girders being spaced apart along the said structural steel mats; and 3. a plurality of tension rods each extending transversely to the plane defined by the booms affixed to one of the longitudinal rods of the one structural steel mat, the tension rod partially encircling and thereby supporting one of the boom rods, and 4. a pair of girders and tension rods being associated in mirror-image fashion.
Claim 3
Dependent Claim
161 words
a plurality of planar lattice girders extending between the two mats and comprising only a single upper boom rod, a single lower boom rod and affixed thereto a plurality of braces extending diagonally between the upper and lower boom rods, the girder extending in the direction of the longitudinally extending steel rods of the mats; a. the said braces having bent terminating ends facing opposite the side to which the upper and lower boom rods are affixed, one terminating end partially encircling and thereby supporting a longitudinal rod of the structural steel mats, the opposite terminating end being hook-shaped, b. the lower boom rod being carried by the transverse rods of one of the structural steel mats, and c. the upper boom rod being in contact with the transverse rods of the steel mat spaced from the mat carrying the lower boom rod, and d. said plurality of planar lattice girders being spaced apart along the said structural steel mats; and
Claim 4
Dependent Claim
161 words
a plurality of planar lattice girders extending between the two mats and comprising only a single upper boom rod, a single lower boom rod and affixed thereto a plurality of braces extending diagonally between the upper and lower boom rods, the girder extending in the direction of the longitudinally extending steel rods of the mats; a. the said braces having bent terminating ends facing opposite the side to which the upper and lower boom rods are affixed, one terminating end partially encircling and thereby supporting a longitudinal rod of the structural steel mats, the opposite terminating end being hook-shaped, b. the lower boom rod being carried by the transverse rods of one of the structural steel mats, and c. the upper boom rod being in contact with the transverse rods of the steel mat spaced from the mat carrying the lower boom rod, and d. said plurality of planar lattice girders being spaced apart along the said structural steel mats; and
Claim 5
Dependent Claim
60 words
The reinforcement of claim 1, wherein the tension rod has the form of a support clamp, one of the ends of the clamp engaging the upper boom rod and a longitudinal rod of one of the structural steel mats associated with the upper boom rod, and the other clamp end engaging a longitudinal rod of the other structural steel mat.
Claim 6
Dependent Claim
17 words
The reinforcement of claim 2, wherein the clamp end engaging the upper boom rod is welded thereto.
Claim 7
Dependent Claim
42 words
a plurality of tension rods each extending transversely to the plane defined by the booms affixed to one of the longitudinal rods of the one structural steel mat, the tension rod partially encircling and thereby supporting one of the boom rods, and
Claim 8
Dependent Claim
42 words
a plurality of tension rods each extending transversely to the plane defined by the booms affixed to one of the longitudinal rods of the one structural steel mat, the tension rod partially encircling and thereby supporting one of the boom rods, and
Claim 9
Dependent Claim
12 words
a pair of girders and tension rods being associated in mirror-image fashion.
Claim 10
Dependent Claim
12 words
a pair of girders and tension rods being associated in mirror-image fashion.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |