Patent US3846946A successfully refreshed from Google Patents.
US3846946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precast concrete building construction
Assignee: Individual
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Filing: 1973-11-20
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Granted: 1974-11-12
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Expires: 1993-11-20
Abstract
Abstract Precast and stressed concrete slabs or panels having parallel openings therethrough are provided with integral spaced short beams extending outwardly from between openings and of a length a little greater than the thickness of the slabs. The slabs are arranged, in the building, with only the extending beams in engagement and secured together so the spaces therebetween provide access to the ends of openings in adjacent slabs, even if arranged at right angles, which facilitates placement, replacement or service of utility service components after the building is erected.
Inventors
- 👤 W Sandstrom
- 👤 R Keturi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:12
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/20; E04B1/02; E04B1/04; E04B5/00; E04B5/48
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
In a construction whereiN precast and stressed concrete slabs are assembled to define a structure, the improvement comprising: at least one horizontal slab having a plurality of spaced, parallel, generally cylindrical openings extending therethrough from one edge thereof to an opposed edge and generally rectangular integral beam members extending from at least one of said edges between said openings and being of a length greater than the thickness of said slab; and a vertical slab, of the same construction as said horizontal slab, arranged with the ends of the beams on said one edge thereof abutting edge portions of the corresponding beams of said horizontal slab to define an inside corner of said structure, the spaces between said beams, adjacent said edges, thereby being accessible from said inside corner for connecting a utility service component in an opening in one of said slabs to a corresponding utility service component in an opening of the other slab, after said structure is erected.
Claim 2
Dependent Claim
161 words
In a construction whereiN precast and stressed concrete slabs are assembled to define a structure, the improvement comprising: at least one horizontal slab having a plurality of spaced, parallel, generally cylindrical openings extending therethrough from one edge thereof to an opposed edge and generally rectangular integral beam members extending from at least one of said edges between said openings and being of a length greater than the thickness of said slab; and a vertical slab, of the same construction as said horizontal slab, arranged with the ends of the beams on said one edge thereof abutting edge portions of the corresponding beams of said horizontal slab to define an inside corner of said structure, the spaces between said beams, adjacent said edges, thereby being accessible from said inside corner for connecting a utility service component in an opening in one of said slabs to a corresponding utility service component in an opening of the other slab, after said structure is erected.
Claim 3
Dependent Claim
38 words
A construction as defined in claim 1 wherein said beams are provided with metal plates overlying and fixedly secured to their end and edge faces, abutting plates of adjacent slabs being welded together at their lateral edge portions.
Claim 4
Dependent Claim
22 words
A construction as defined in claim 1 including removable cover means closing the exposed portions of said spaces at said inside cover.
Claim 5
Dependent Claim
19 words
A construction as defined in claim 3 wherein said cover means is flush with the surfaces of said slabs.
Claim 6
Dependent Claim
40 words
A construction as defined in claim 3 wherein said cover means defines a conduit extending along said corner whereby a utility line or the like may extend from one of said spaces, along said conduit to another of said spaces.
Claim 7
Dependent Claim
28 words
A construction as defined in claim 1 wherein at least one of said beams is provided with a lateral opening therethrough, providing communication between adjacent spaces between beams.
Claim 8
Dependent Claim
76 words
A construction as defined in claim 1 including a second horizontal slab of the same construction as said first-named slab arranged with the beams from said one of its edges aligned with and in end abutting relation to the beams of said first named slab; means fixedly securing the abutting ends of said beams together; and the ends of the beams of said vertical slab spanning the juncture between the abutting ends of said aligned beams.
Claim 9
Dependent Claim
110 words
A precast concrete component comprising: a concrete slab having opposed faces and opposed edges; a plurality of spaced, parallel, generally cylindrical openings extending through said slab from one edge thereof to an opposed edge and spaced inwardly from both said opposed faces, said openings being of a size to freely accommodate utility service components; short, generally rectangular beams, integral with said slab extending outwardly from at least said one edge between said openings, said beams each being of a width substantially equal to the thickness of said slab and a length greater than said thickness; and tensioned stressing tendons extending through said slab and beams generally parallel to said openings.
Claim 10
Dependent Claim
110 words
A precast concrete component comprising: a concrete slab having opposed faces and opposed edges; a plurality of spaced, parallel, generally cylindrical openings extending through said slab from one edge thereof to an opposed edge and spaced inwardly from both said opposed faces, said openings being of a size to freely accommodate utility service components; short, generally rectangular beams, integral with said slab extending outwardly from at least said one edge between said openings, said beams each being of a width substantially equal to the thickness of said slab and a length greater than said thickness; and tensioned stressing tendons extending through said slab and beams generally parallel to said openings.
Claim 11
Dependent Claim
29 words
A component as defined in claim 8 including a weldable metal plate overlying the end face of each beam and certain of said tendons being anchored to said plate.
Claim 12
Dependent Claim
32 words
A component as defined in claim 8 including weldable metal plates overlying opposite edge surfaces of said beams, substantially flush with said opposed faces of said slab, and being fixedly secured thereto.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |