US3871787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint structure for concrete materials and the like
Assignee: Individual
•
Filing: 1973-10-30
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Granted: 1975-03-18
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Expires: 1993-10-30
Abstract
Abstract The invention is concerned with a joint structure adapted to be embedded in a concrete mass to accommodate relative displacements of sections thereof bounded in common by the joint. The joint structure includes an elongated, generally T-shaped channel having a horizontal flange and a web extending downwardly therefrom. The channel is adapted to be disposed within a concrete mass with the flange oriented in generally planar relation with the upper surface of the mass. The web is divided along a generally vertical plane disposed at its center into side-by-side components that are displaceable transversely relative to each other, and such components are equipped with anchors that effectively secure the same to the sections of the concrete mass bounded in common by the joint. At the time of insertion of the joint structure into a wet or uncured mass of concrete, a cap is removably secured to the channel in overlying relation with the flange thereof, and a protective strip of tape is located intermediate the flange and cap in attachment to the upper surface of the flange. After the wet concrete has been processed and finished, the cap and tape strip are removed to leave the channel in position within the concrete after it cures to serve as a contraction joint.
Inventors
- 👤 William James Stegmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:19
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6803; E04B1/6804; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/106
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
135 words
A joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, comprising: a longitudinally extending generally T-shaped channel having a transverse flange defining a topwall adapted to be disposed in generally planar relation with the surfaces of such sections and having also a web extending downwardly from said flange, said web being divided intermediate the transverse edges thereof into web components disposed in side-by-side juxtaposition and displaceable transversely relative to each other, means effective to secure each of said web components to the associated section for movement therewith; a cap removably secured to said channel in generally overlying relation with said flange; and a strip of protective material intermediate said flange and cap to protect the surface of the latter.
Claim 2
Dependent Claim
135 words
A joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, comprising: a longitudinally extending generally T-shaped channel having a transverse flange defining a topwall adapted to be disposed in generally planar relation with the surfaces of such sections and having also a web extending downwardly from said flange, said web being divided intermediate the transverse edges thereof into web components disposed in side-by-side juxtaposition and displaceable transversely relative to each other, means effective to secure each of said web components to the associated section for movement therewith; a cap removably secured to said channel in generally overlying relation with said flange; and a strip of protective material intermediate said flange and cap to protect the surface of the latter.
Claim 3
Dependent Claim
31 words
The joint structure of claim 1 in which said means comprises a pair of anchors respectively secured to said web components and projecting transversely therefrom a spaced distance below saId flange.
Claim 4
Dependent Claim
22 words
The joint structure of claim 2 in which said anchors are disposed in substantial alignment and together have a generally I-shaped configuration.
Claim 5
Dependent Claim
50 words
The joint structure of claim 1 in which one of said web components is longer than the other and is provided with a transversely offset shoulder underlying the end of such other web component to protect the same during insertion of said joint structure into a mass of uncured concrete.
Claim 6
Dependent Claim
37 words
The joint structure of claim 4 in which said longer web component has a progressively decreasing transverse dimension extending downwardly from said offset shoulder to facilitate insertion of said joint structure into a mass of uncured concrete.
Claim 7
Dependent Claim
36 words
The joint structure of claim 1 in which said web components and flange are integral, said web components being angularly displaceable along the juncture thereof with said flange to provide the aforesaid relative transverse displaceability thereof.
Claim 8
Dependent Claim
50 words
The joint structure of claim 6 in which one of said web components is longer than the other and is provided with a transversely offset shoulder underlying the end of such other web component to protect the same during insertion of said joint structure into a mass of uncured concrete.
Claim 9
Dependent Claim
31 words
The joint structure of claim 7 in which said means comprises a pair of anchors respectively secured to said web components and projecting transversely therefrom a spaced distance below said flange.
Claim 10
Dependent Claim
29 words
The joint structure of claim 1 in which said cap is equipped therealong with resilient fasteners releasably engageable with said flange to removably secure said cap to said channel.
Claim 11
Dependent Claim
47 words
The joint structure of claim 9 in which said cap is provided with a generally planar topwall adapted to overlie said flange, said resilient fasteners depending from said topwall in transversely spaced relation and being substantially continuous elements cooperative with said flange generally along the length thereof.
Claim 12
Dependent Claim
34 words
The joint structure of claim 10 in which each of said resilient fasteners has an arcuate configuration effective to pre-cove along said flange a mass of concrete into which said joint structure is embedded.
Claim 13
Dependent Claim
28 words
The joint structure of claim 10 in which the topwall of said cap is substantially wider in transverse dimension than said flange so as to overhang the same.
Claim 14
Dependent Claim
27 words
The joint structure of claim 1 in which said strip of material comprises a low-tack, pressure-sensitive tape releasably secured to said flange along the upper surface thereof.
Claim 15
Dependent Claim
29 words
The joint structure of claim 13 in which said cap is equipped therealong with resilient fasteners releasably engageable with said flange to removably secure said cap to said channel.
Claim 16
Dependent Claim
39 words
The joint structure of claim 1 and further including means having cooperative elements respectively provided by said web components to maintain the same in generally contiguous juxtaposition during insertion of said joint structure into a mass of uncured concrete.
Claim 17
Dependent Claim
31 words
The joint structure of claim 15 in which said cooperative elements comprise a tongue provided by one web component and a groove provided by the other for receiving said tongue therein.
Claim 18
Dependent Claim
69 words
The joint structure of claim 16 in which one of said web components is longer than the other and is provided with a transversely offset shoulder underlying the end of such other web component to protect the same during insertion of said joint structure into a mass of uncured concrete, said groove being provided in said shoulder and said tongue being provided by the shorter of said web components.
Claim 19
Dependent Claim
156 words
In a joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, a longitudinally extending generally T-shaped channel having a transverse flange defining a topwall adapted to be disposed in generally planar relation with the surfaces of such sections and having also a web extending downwardly from said flange, said web being divided Intermediate the transverse edges thereof into web components in generally side-by-side juxtaposition and displaceable transversely relative to each other, each of said web components being equipped with a transversely projecting anchor effective to secure the same to the associated section of concrete material for movement therewith, and one of said web components being longer than the other and provided with a transversely offset shoulder underlying the end of such other web component to protect the same during insertion of said joint structure into a mass of uncured concrete.
Claim 20
Dependent Claim
156 words
In a joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, a longitudinally extending generally T-shaped channel having a transverse flange defining a topwall adapted to be disposed in generally planar relation with the surfaces of such sections and having also a web extending downwardly from said flange, said web being divided Intermediate the transverse edges thereof into web components in generally side-by-side juxtaposition and displaceable transversely relative to each other, each of said web components being equipped with a transversely projecting anchor effective to secure the same to the associated section of concrete material for movement therewith, and one of said web components being longer than the other and provided with a transversely offset shoulder underlying the end of such other web component to protect the same during insertion of said joint structure into a mass of uncured concrete.
Claim 21
Dependent Claim
65 words
The channel of claim 18 in which said web components and flange are integral, said web components being angularly displaceable along the juncture thereof with said flange to provide the aforesaid relative transverse displaceability thereof, and said longer web component has a progressively decreasing transverse dimension extending downwardly from said offset shoulder to facilitate insertion of said joint structure into a mass of uncured concrete.
Claim 22
Dependent Claim
21 words
The channel of claim 19 in which said anchors are disposed in substantial alignment and together have a generally I-shaped configuration.
Claim 23
Dependent Claim
35 words
The channel of claim 20 in which the channel is an elongated continuous member integral throughout, said web being located adjacent the center of said flange and having a substantially normal orientation with respect thereto.
Claim 24
Dependent Claim
55 words
The channel of claim 19 and further including means having cooperative elements comprising a groove disposed along said shoulder and a tongue provided by the shorter of said web components receivable within said groove to maintain said web components in generally contiguous juxtaposition during insertion of said joint structure into a mass of uncured concrete.
Claim 25
Dependent Claim
113 words
In a joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, a cap adapted to be removably secured to the flange of a generally T-shaped channel to stiffen the latter and protect the flange thereof, said cap having a relatively wide and thin topwall substantially wider than such flange and adapted to overlie the same, said cap further having transversely spaced spring fasteners extending downwardly from said topwall and being formed integrally therewith, and said fasteners each having an arcuate configuration to enforce a cove configuration onto any mass of concrete into which said fasteners are inserted.
Claim 26
Dependent Claim
113 words
In a joint structure adapted to be embedded in concrete materials and the like to accommodate relative displacements of sections thereof bounded in common by such joint, a cap adapted to be removably secured to the flange of a generally T-shaped channel to stiffen the latter and protect the flange thereof, said cap having a relatively wide and thin topwall substantially wider than such flange and adapted to overlie the same, said cap further having transversely spaced spring fasteners extending downwardly from said topwall and being formed integrally therewith, and said fasteners each having an arcuate configuration to enforce a cove configuration onto any mass of concrete into which said fasteners are inserted.
Claim 27
Dependent Claim
29 words
The cap of claim 23 in which said topwall and fasteners are sufficiently resilient to enable an elongated length of said cap to be coiled into a helical roll.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |