Patent US3780480A successfully refreshed from Google Patents.
US3780480A
Expired / Lapsed
US
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Building construction and method of same
Assignee: TAC HOUSE Inc
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Filing: 1971-10-07
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Granted: 1973-12-25
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Expires: 1991-10-07
Abstract
Abstract A building construction and method which utilizes columns and precast concrete, generally rectangular, horizontal floor slabs. A first set of columns is erected at the building site and posttensioned. Then the horizontal slabs are lifted up and positioned with the corners thereof resting on the upper ends of the columns. In the preferred embodiment, each slab has a vertically extending pin secured to the slab at each corner. After the slabs are positioned on the columns, a locking ring is dropped over the pins with the upper edge of the ring extending above the upper horizontal surface of the slabs. A second series of columns is erected in vertical alignment with the previously erected and post-tensioned columns. Each column in the second series rests on the upper edge of the corresponding locking ring. This arrangement provides essentially a point support for the column which permits very easy vertical alignment of the column. Once the column has been aligned, the space between the bottom of the column and the upper surface of the horizontal slabs is dry packed. After the dry pack has set, the second series of columns is post-tensioned before receiving the next series of horizontal floor slabs. The resulting connection between the column and slabs provides a ''''semi-rigid'''' connection which is suitable for use in buildings that are constructed in earthquake zones.
Inventors
- 👤 A Cvijanovic
- 👤 S Firnkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:38
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/20; E04B1/21; E04B1/215
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
195 words
A building structure comprising: 1. a first plurality of laterally spaced vertical columns, said first plurality including at least one interior vertical column; 2. means for post-tensioning each of said first plurality vertical columns; 3. a plurality of generally rectangular horizontal slabs positioned with the corners thereof resting on the upper ends of saId first plurality vertical columns including said interior vertical column; 4. a vertical pin means secured to each corner of said slabs with at least two of said slabs being positioned in adjacent relation on one of said first plurality vertical columns with the corner vertical pin means thereof positioned in corresponding adjacent relation of the column; 5. vertically open ring means surrounding said two adjacent vertical pin means for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column; 6. a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns; 7. means for structurally connecting each pair of vertically aligned first and second plurality columns; and, 8. means for post-tensioning each of said second plurality vertical columns.
Claim 2
Dependent Claim
195 words
A building structure comprising: 1. a first plurality of laterally spaced vertical columns, said first plurality including at least one interior vertical column; 2. means for post-tensioning each of said first plurality vertical columns; 3. a plurality of generally rectangular horizontal slabs positioned with the corners thereof resting on the upper ends of saId first plurality vertical columns including said interior vertical column; 4. a vertical pin means secured to each corner of said slabs with at least two of said slabs being positioned in adjacent relation on one of said first plurality vertical columns with the corner vertical pin means thereof positioned in corresponding adjacent relation of the column; 5. vertically open ring means surrounding said two adjacent vertical pin means for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column; 6. a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns; 7. means for structurally connecting each pair of vertically aligned first and second plurality columns; and, 8. means for post-tensioning each of said second plurality vertical columns.
Claim 3
Dependent Claim
10 words
means for post-tensioning each of said first plurality vertical columns;
Claim 4
Dependent Claim
10 words
means for post-tensioning each of said first plurality vertical columns;
Claim 5
Dependent Claim
54 words
The building structure of claim 1 wherein the upper end of said vertically open ring means extends above the upper surfaces of said adjacent slabs and the upper end of each of said vertical pin means whereby one of said vertically aligned second plurality columns rests on the upper end of said ring means.
Claim 6
Dependent Claim
10 words
means for post-tensioning each of said first plurality vertical columns;
Claim 7
Dependent Claim
10 words
means for post-tensioning each of said first plurality vertical columns;
Claim 8
Dependent Claim
22 words
means for post-tensioning each of said first plurality of columns, said post-tensioning means including a post-tensioning rod extending vertically through the column;
Claim 9
Dependent Claim
22 words
means for post-tensioning each of said first plurality of columns, said post-tensioning means including a post-tensioning rod extending vertically through the column;
Claim 10
Dependent Claim
42 words
a plurality of generally rectangular horizontal slabs each having a notch portion formed in one edge thereof, said slabs being positioned with the notch portions thereof resting on the upper ends of said first plurality vertical columns including said interior vertical column;
Claim 11
Dependent Claim
42 words
a plurality of generally rectangular horizontal slabs each having a notch portion formed in one edge thereof, said slabs being positioned with the notch portions thereof resting on the upper ends of said first plurality vertical columns including said interior vertical column;
Claim 12
Dependent Claim
123 words
a plurality of pre-cast concrete horizontal slabs positioned on the upper ends of said first plurality vertical columns including said interior vertical column; each of said slabs having: a generally rectangular plan configuration with four substantially straight side edges and chamfered corners joining said side edges and resting on the upper ends of said columns; a channel member cast in said slab at each corner thereof with the open portion of the channel member facing inwardly; and, a vertically extending pin secured to the outer face of each of said channel member, with at least two of said slabs being positioned in adjacent relation on one of said columns with the vertically extending pins thereof positioned in corresponding adjacent relation on the column;
Claim 13
Dependent Claim
123 words
a plurality of pre-cast concrete horizontal slabs positioned on the upper ends of said first plurality vertical columns including said interior vertical column; each of said slabs having: a generally rectangular plan configuration with four substantially straight side edges and chamfered corners joining said side edges and resting on the upper ends of said columns; a channel member cast in said slab at each corner thereof with the open portion of the channel member facing inwardly; and, a vertically extending pin secured to the outer face of each of said channel member, with at least two of said slabs being positioned in adjacent relation on one of said columns with the vertically extending pins thereof positioned in corresponding adjacent relation on the column;
Claim 14
Dependent Claim
50 words
The building structure of claim 2 wherein four of said slabs are positioned in adjacent relation on one of said columns with the corner vertical pin means thereof positioned in corresponding adjacent relation on the column and wherein said vertically open ring means surrounds said four adjacent vertical pin means.
Claim 15
Dependent Claim
28 words
a plurality of generally rectangular horizontal slabs positioned with the corners thereof resting on the upper ends of saId first plurality vertical columns including said interior vertical column;
Claim 16
Dependent Claim
28 words
a plurality of generally rectangular horizontal slabs positioned with the corners thereof resting on the upper ends of saId first plurality vertical columns including said interior vertical column;
Claim 17
Dependent Claim
46 words
a vertical pin means secured to each corner of said slabs with at least two of said slabs being positioned in adjacent relation on one of said first plurality vertical columns with the corner vertical pin means thereof positioned in corresponding adjacent relation of the column;
Claim 18
Dependent Claim
46 words
a vertical pin means secured to each corner of said slabs with at least two of said slabs being positioned in adjacent relation on one of said first plurality vertical columns with the corner vertical pin means thereof positioned in corresponding adjacent relation of the column;
Claim 19
Dependent Claim
4 words
A building structure comprising:
Claim 20
Dependent Claim
4 words
A building structure comprising:
Claim 21
Dependent Claim
14 words
a vertical pin means secured to each side of said horizontal slab notch portion;
Claim 22
Dependent Claim
14 words
a vertical pin means secured to each side of said horizontal slab notch portion;
Claim 23
Dependent Claim
30 words
vertically open ring means surrounding said two adjacent pins for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column;
Claim 24
Dependent Claim
30 words
vertically open ring means surrounding said two adjacent pins for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column;
Claim 25
Dependent Claim
54 words
The building structure of claim 4 wherein the upper end of said vertically open ring means extends above the upper surfaces of said adjacent slabs and the upper end of each of said vertical pin means whereby one of said vertically aligned second plurality columns rests on the upper end of said ring means.
Claim 26
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 27
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 28
Dependent Claim
34 words
vertically open ring means surrounding the vertical pin means on one slab and the corresponding column post-tensioning rod for maintaining said slab in a predetermined horizontal position on the upper end of said column;
Claim 29
Dependent Claim
34 words
vertically open ring means surrounding the vertical pin means on one slab and the corresponding column post-tensioning rod for maintaining said slab in a predetermined horizontal position on the upper end of said column;
Claim 30
Dependent Claim
32 words
vertically open ring means surrounding said two adjacent vertical pin means for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column;
Claim 31
Dependent Claim
32 words
vertically open ring means surrounding said two adjacent vertical pin means for maintaining the corresponding adjacent horizontal slabs within a predetermined range of horizontal positions on the upper end of said column;
Claim 32
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 33
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 34
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 35
Dependent Claim
24 words
a corresponding second plurality of laterally spaced vertical columns positioned above said horizontal slabs and in vertical alignment with said first plurality vertical columns;
Claim 36
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 37
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 38
Dependent Claim
50 words
The building structure of claim 5 wherein four of said slabs are positioned in adjacent relation on one of said columns with the corner vertical pin means thereof positioned in corresponding adjacent relation on the column and wherein said vertically open ring means surrounds said four adjacent vertical pin means.
Claim 39
Dependent Claim
4 words
A building structure comprising:
Claim 40
Dependent Claim
4 words
A building structure comprising:
Claim 41
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
Claim 42
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
Claim 43
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 44
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 45
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 46
Dependent Claim
15 words
means for structurally connecting each pair of vertically aligned first and second plurality columns; and,
Claim 47
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
Claim 48
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
Claim 49
Dependent Claim
54 words
The building structure of claim 7 wherein the upper end of said vertically open ring means extends above the upper surfaces of said adjacent slabs and the upper end of each of said vertical pin means whereby one of said vertically aligned second plurality columns rests on the upper end of said ring means.
Claim 50
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
Claim 51
Dependent Claim
10 words
means for post-tensioning each of said second plurality vertical columns.
References Cited (Backward Citations)
US1430931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |