Plate concrete dowel system

• US 7,604,432 B2
• Filed: 06/20/2008
• Issued: 10/20/2009
• Est. Priority Date: 08/13/2003
• Status: Active Grant

• Current Assignee: Shaw & Sons Inc
• Original Assignee: Shaw & Sons Inc
• Inventors: Shaw, Lee A., Shaw, Ronald D.
• Primary Examiner(s): Addie; Raymond W
• Application Number:
  US12/214,770
• Publication Number:
  US 20080267704A1
• Time in Patent Office: 487 Days
• Field of Search: 404/51, 404/58, 404 60- 66
• US Class Current: 404/60
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045
• CPC Class Codes: E01C 19/504 adapted to, or provided with, means to maintain reinforcing or load transfer elements in a required position removable supports for positioning reinforcing or load transfer elements in general E01C23/045

Abstract

A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a pocket former having a rib insert disposable therewithin for engaging the sides of a dowel plate. The pocket former has a vertical base flange with a pair of fastener-receiving bosses for securing the pocket former to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint and is positioned within the first pour. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.

Claims

1. A disc dowel system interposed between adjacent first and second concrete pours defining a pour joint therebetween, the disc dowel system comprising:

a dowel plate having an orthogonal shape and defining an embedded portion and a slidable portion, the dowel plate having a pair of opposing side edges;

a pocket former disposed within the first pour and having a laterally extending interior compartment with an open generally straight side, a pair of opposing compartment sides and a compartment end, the straight side being aligned with the pour joint; and

a rib insert configured to be removably insertable into the pocket former and comprising a spaced pair of side members interconnected by a connecting member, each one of the side members being configured to extend along at least a portion of an adjacent one of the compartment sides when the rib insert is installed in the pocket former, each one of the side members including three laterally outwardly extending biasing members sized and configured to bear against a side edge of the dowel plate, the biasing members being disposed in spaced relation to one another and extending along a direction toward the connecting member;

wherein the embedded portion is rigidly encapsulated within the second pour and the slidable portion is slidably disposed within the pocket former, the pair of opposing side edges being positioned parallel to the pair of opposing compartment sides, the side members being configured to resiliently deflect such that the dowel plate permits relative horizontal movement of the first and second pours while resisting relative vertical movement thereof.

2. The disc dowel system of claim 1 wherein the connecting member is configured to resiliently deflect in response to direct engagement with an end edge of the dowel plate.

3. The disc dowel system of claim 2 wherein the connecting member includes a deflection member extending laterally outwardly therefrom and being configured to bear against the end edge of the dowel plate when installed within the pocket former.

4. The disc dowel system of claim 3 wherein the deflection member is comprised of a first portion and a second portion, the first portion extending laterally outwardly from the connecting member in non-perpendicular relation thereto, the second portion extending laterally outwardly from the first portion and being oriented in non-perpendicular relation thereto.

5. The disc dowel system of claim 4 wherein the second portion has a convex shape.

6. The disc dowel system of claim 5 wherein the deflection member further comprises a third portion extending laterally inwardly from an end of the second portion opposite that from which the first portion is connected, the third portion having a free end extending toward a junction of the connecting member and the first portion.

7. The disc dowel system of claim 5 wherein each of the side members includes a locking mechanism formed on a free end thereof for engaging the rib insert to the pocket former.

8. The disc dowel system of claim 5 wherein the locking mechanism comprises an L-shaped flange configured to engage a detent formed in the pocket former on opposing sides of the interior compartment.

9. A rib insert for a pocket former of a disc dowel system adapted for installing an orthogonally shaped dowel plate within a pour joint between adjacent first and second concrete pours, the pour joint being formed by a concrete form, the dowel plate having a generally orthogonal shape with an embedded portion and a slidable portion, the dowel plate having a pair of opposing side edges, the pair of opposing side edges being positioned parallel to the pair of opposing compartment sides, the pocket former having an open, straight side, a pair of opposing compartment sides and a compartment end, the rib insert comprising:

a spaced pair of side members sized and configured to extend along at least a portion of an adjacent one of the compartment sides when the rib insert is installed in the pocket former, the side members being configured to resiliently deflect in response to direct engagement with side edges of the dowel plate; and

a connecting member interconnecting the side members and being configured to resiliently deflect in response to direct engagement with an end edge of the dowel plate, the connecting member including a deflection member extending laterally outwardly therefrom and being configured to bear against the end edge of the dowel plate when installed within the pocket former.

10. The rib insert of claim 9 wherein each of the side members includes at least one laterally outwardly extending biasing member sized and configured to bear against a side edge of the dowel plate.

11. The rib insert of claim 10 wherein the biasing member extends along a direction toward the connecting member.

12. The rib insert of claim 9 wherein the deflection member is comprised of a first portion and a second portion, the first portion extending laterally outwardly from the connecting member in non-perpendicular relation thereto, the second portion extending laterally outwardly from the first portion and being oriented in non-perpendicular relation thereto.

13. The rib insert of claim 12 wherein the deflection member further comprises a third portion extending laterally inwardly from an end of the second portion opposite that from which the first portion is connected, the third portion having a free end extending toward a junction of the connecting member and the first portion.