US4733513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tying bar for concrete joints
Assignee: GREENSTEAK Inc
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Filing: 1986-10-21
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Granted: 1988-03-29
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Expires: 2006-10-21
Abstract
Abstract An improved dowel or tying bar and joint construction for transferring stresses across a joint between concrete slabs or structures and accommodating for shrinkage and expansion of concrete. The bar has a resilient facing attached to at least one side of the bar so that the concrete slab or structure can move in relationship to the bar in a direction substantially perpendicular to the resilient facing. The bar is arranged across the joint in a direction substantially perpendicular to the axis defined by the joint.
Inventors
- 👤 Ernest K. Schrader
- 👤 Robert F. Oury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:22
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/14; E04; E04B; E04B1/00; E04B1/38; E04B1/48; E04B1/483
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
113 words
An improved dowel or tying bar for transferring stresses across a joint between concrete structures and accommodating for shrinkage or expansion the concrete structures, the joint defining an axis, the improved bar having sides and a first and second end, the sides of the bar embedded in the concrete structures and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, and the bar further having a resilient facing attached to at least one side of the bar to provide for movement of the concrete structures in relationship to the bar in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 2
Dependent Claim
113 words
An improved dowel or tying bar for transferring stresses across a joint between concrete structures and accommodating for shrinkage or expansion the concrete structures, the joint defining an axis, the improved bar having sides and a first and second end, the sides of the bar embedded in the concrete structures and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, and the bar further having a resilient facing attached to at least one side of the bar to provide for movement of the concrete structures in relationship to the bar in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 3
Dependent Claim
20 words
The improved bar of claim 1 wherein a resilient facing is attached to at least one end of the bar.
Claim 4
Dependent Claim
19 words
The improved bar of claim 1 wherein a resilient facing is attached to two opposed sides of the bar.
Claim 5
Dependent Claim
13 words
The improved bar of claim 1 wherein the bar is a tie bar.
Claim 6
Dependent Claim
30 words
The improved bar of claim 1 wherein the bar has a cross section substantially parallel to the axis defined by the joint, the cross section defines a substantially rectangular shape.
Claim 7
Dependent Claim
78 words
The improved bar of claim 1 wherein the bar has a cross section substantially parallel to the axis defined by the joint, the cross section defines a channel shape comprising a bottom section having first and second ends and upstanding flanges attached in an opposite spaced relationship to the first and second ends of the bottom section, each upstanding flange having an inside and outside web face, the inside web faces of the upstanding flanges facing each other.
Claim 8
Dependent Claim
25 words
The improved bar of claim 6 wherein the resilient facing is attached to the outside web face of at least one of the upstanding flanges.
Claim 9
Dependent Claim
14 words
The improved bar of claim 1 wherein the resilient facing is a plastic material.
Claim 10
Dependent Claim
14 words
The improved bar of claim 1 wherein the resilient facing is a rubber material.
Claim 11
Dependent Claim
108 words
An improved joint construction for transferring stresses across a joint between concrete structures and accommodating for shrinkage or expansion of the concrete structures, the joint defining an axis, the improved joint construction characterized by a plurality of dowel bars embedded in the concrete structures and having sides arranged across the joint in a direction substantially perpendicular to the joint axis and first and second ends, and each bar further having a resilient facing attached to at least one side to provide for movement of the concrete structures in relationship to the bars in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 12
Dependent Claim
108 words
An improved joint construction for transferring stresses across a joint between concrete structures and accommodating for shrinkage or expansion of the concrete structures, the joint defining an axis, the improved joint construction characterized by a plurality of dowel bars embedded in the concrete structures and having sides arranged across the joint in a direction substantially perpendicular to the joint axis and first and second ends, and each bar further having a resilient facing attached to at least one side to provide for movement of the concrete structures in relationship to the bars in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 13
Dependent Claim
23 words
The improved joint construction of claim 10 wherein a resilient facing is attached to at least one end for each of the bars.
Claim 14
Dependent Claim
13 words
The improved joint construction of claim 10 wherein the bars are tie bars.
Claim 15
Dependent Claim
22 words
The improved joint construction of claim 10 wherein the bars have a resilient facing attached to two opposed sides of the bars.
Claim 16
Dependent Claim
114 words
An improved dowel bar for transferring stresses across a joint between slabs of a concrete pavement and accommodating for shrinkage or expansion of the slabs, the joint defining an axis, the improved bar having sides and a first and second end, the sides of the bar embedded in the concrete slabs and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, and the bar further having a resilient facing attached to at least one side of the bar to provide for movement of the concrete slab in relationship to the bar in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 17
Dependent Claim
114 words
An improved dowel bar for transferring stresses across a joint between slabs of a concrete pavement and accommodating for shrinkage or expansion of the slabs, the joint defining an axis, the improved bar having sides and a first and second end, the sides of the bar embedded in the concrete slabs and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, and the bar further having a resilient facing attached to at least one side of the bar to provide for movement of the concrete slab in relationship to the bar in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 18
Dependent Claim
20 words
The improved bar of claim 14 wherein a resilient facing is attached to at least one end of the bar.
Claim 19
Dependent Claim
19 words
The improved bar of claim 14 wherein a resilient facing is attached to two opposed sides of the bar.
Claim 20
Dependent Claim
13 words
The improved bar of claim 14 wherein the bar is a tie bar.
Claim 21
Dependent Claim
30 words
The improved bar of claim 14 wherein the bar has a cross section substantially parallel to the axis defined by the joint, the cross section defines a substantially rectangular shape.
Claim 22
Dependent Claim
78 words
The improved bar of claim 14 wherein the bar has a cross section substantially parallel to the axis defined by the joint, the cross section defines a channel shape comprising a bottom section having first and second ends and upstanding flanges attached in an opposite spaced relationship to the first and second ends of the bottom section, each upstanding flange having an inside and outside web face, the inside web faces of the upstanding flanges facing each other.
Claim 23
Dependent Claim
25 words
The improved bar of claim 19 wherein the resilient facing is attached to the outside web face of at least one of the upstanding flanges.
Claim 24
Dependent Claim
14 words
The improved bar of claim 14 wherein the resilient facing is a plastic material.
Claim 25
Dependent Claim
14 words
The improved bar of claim 14 wherein the resilient facing is a rubber material.
Claim 26
Dependent Claim
121 words
An improved joint construction for transferring stresses across a joint between slabs of a concrete pavement and accommodating for shrinkage or expansion of the concrete slabs, the joint defining an axis, the improved joint construction characterized by a plurality of bars embedded in the concrete slabs and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, the bars having sides substantially perpendicular to the joint axis and first and second ends, and each bar further having a resilient facing attached to at least one side to provide for movement of the concrete slabs in relationship to the bars in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 27
Dependent Claim
121 words
An improved joint construction for transferring stresses across a joint between slabs of a concrete pavement and accommodating for shrinkage or expansion of the concrete slabs, the joint defining an axis, the improved joint construction characterized by a plurality of bars embedded in the concrete slabs and arranged across the joint in a direction substantially perpendicular to the axis defined by the joint, the bars having sides substantially perpendicular to the joint axis and first and second ends, and each bar further having a resilient facing attached to at least one side to provide for movement of the concrete slabs in relationship to the bars in a direction substantially perpendicular to the resilient facing and substantially aligned with the joint axis.
Claim 28
Dependent Claim
23 words
The improved joint construction of claim 23 wherein a resilient facing is attached to at least one end for each of the bars.
Claim 29
Dependent Claim
14 words
The improved joint construction of claim 23 wherein the tying bars are tie bars.
Claim 30
Dependent Claim
22 words
The improved joint construction of claim 23 wherein the bars have a resilient facing attached to two opposed sides of the bars.
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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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |