Plate concrete dowel system

• US 7,338,230 B2
• Filed: 02/23/2006
• Issued: 03/04/2008
• Est. Priority Date: 08/13/2003
• Status: Expired due to Term

• 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:
  US11/360,828
• Publication Number:
  US 20060140721A1
• Time in Patent Office: 740 Days
• Field of Search: 404 47- 51, 404 56- 61, 404/65, 249/9
• US Class Current: 404/58
• 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 positioner bracket, a pocket former and an orthogonally shaped dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and a compartment perimeter. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. 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 and 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; and

a pocket former disposed within the first pour and having upper and lower outer surfaces and a laterally extending interior compartment with an open generally straight side, the straight side being alignable with the pour joint, at least one of the upper and lower outer surfaces having at least one former alignment rib for resisting flexion thereof under the pressure of wet concrete;

wherein the embedded portion is rigidly encapsulated within the second pour and 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 resisting relative vertical movement thereof.

2. The disc dowel system of claim 1 wherein the orthogonally shaped dowel plate is generally configured into one of a square shape and a rectangular shape and is at least partially fabricated from material comprised of at least one of metal, carbon fiber and plastic.

3. The disc dowel system of claim 1 wherein the interior compartment is sized and configured to be complementary to the dowel plate.

4. The disc dowel system of claim 1 wherein the pocket former is orthogonally shaped and further comprises a perimeter flange extending therealong, the perimeter flange having a generally vertically-oriented cross section with upper and lower flange portions configured for resisting horizontal movement of the pocket former relative to the first pour.

5. The disc dowel system of claim 1 wherein the upper and lower outer surfaces each having a spaced pair of the former alignment ribs extending thereacross in a direction generally perpendicular to the straight side.

6. The disc dowel system of claim 1 wherein each one of the former alignment ribs has a flared cross section configured for resisting vertical movement of the pocket former within the first pour.

7. A disc dowel system 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 an embedded portion and a slidable portion, the disc dowel system comprising:

a positioner bracket having a vertically disposed base flange and a horizontal plate portion, the base flange being attachable to the concrete form; and

a pocket former having an interior compartment configured to be complementary to the dowel plate and having an open, straight side, the pocket former having upper and lower outer surfaces and at least one former alignment rib disposed thereon for resisting flexion under the pressure of wet concrete;

wherein the plate portion is sized and configured to be complementary to the interior compartment such that the positioner bracket may slidably receive the pocket former with the straight side generally abutting the base flange during pouring of the first pour prior to removal of the concrete form and positioner bracket for subsequent insertion of the slidable portion into the interior compartment and pouring of the second pour to encapsulate the embedded portion therewithin.

8. The disc dowel system of claim 7 wherein:

the plate portion includes upper and lower exterior surfaces each having a pair of spaced apart positioner alignment ribs extending generally perpendicularly relative to the pour joint; and

the interior compartment includes upper and lower inner surfaces each having a spaced pair of alignment grooves sized and configured to receive the positioner alignment ribs such that the pocket former is held in alignment with the positioner bracket during pouring of the first pour.

9. The disc dowel system of claim 7 wherein the orthogonally shaped dowel plate is generally configured into one of a square shape and a rectangular shape.

10. The disc dowel system of claim 7 further comprising a perimeter flange extending around the pocket former perimeter and having a generally vertically-oriented cross section with flared upper and lower flange portions configured for resisting horizontal movement of the pocket former within the first pour.

11. The disc dowel system of claim 7 wherein the upper and lower outer surfaces each have a pair of spaced apart former alignment ribs extending generally perpendicularly from the pour joint with each one of the former alignment ribs having a flared cross section configured for restricting vertical movement of the pocket former within the first pour.

12. The disc dowel system of claim 7 wherein the base flange includes a pair of apertures extending therethrough and sized to permit the passage of a fastener through the base flange for facilitating the attachment of the positioner bracket to the concrete form.

13. The disc dowel system of claim 7 wherein at least one of the positioner bracket and the pocket former is at least partially fabricated from material comprised of at least one of metal, carbon fiber and plastic.

14. A method for installing a generally orthogonally shaped dowel plate within a pour joint between adjacent first and second concrete pours using a pocket former having an interior compartment and having an open, straight side and being configured complementary to the dowel plate, the pocket former having upper and lower outer surfaces and at least one former alignment rib disposed thereon for resisting flexion under the pressure of wet concrete, the dowel plate defining an embedded portion and a slidable portion, the method comprising the steps of:

positioning a concrete form along a desired location of the pour joint;

positioning the pocket former adjacent to the concrete form such that the interior compartment extends substantially horizontally outwardly therefrom with the straight side being disposed in abutment therewith;

pouring the first pour such that the pocket former is rigidly encapsulated therewithin;

removing the concrete form after the first pour has cured;

inserting the slidable portion into the interior compartment; and

pouring the second pour such that the embedded portion is rigidly encapsulated within the second pour and the slidable portion is slidably disposed within the pocket former.

15. The method of claim 14 using a positioner bracket having a vertically disposed base flange and a plate portion extending horizontally therefrom, the method comprising the additional steps of:

securing the base flange to the concrete form such that such that the positioner bracket is rigidly attached thereto with the plate portion extending substantially horizontally outwardly therefrom;

sliding the pocket former over the positioner bracket such that the straight side is in abutment with the base flange; and

removing the positioner bracket from the pocket former after the first pour has cured.

16. A pocket former for a disc dowel system adapted to minimize relative vertical displacement of adjacently disposed concrete slabs, the pocket former comprising:

an orthogonally shaped interior compartment having upper and lower outer surfaces with at least one former alignment rib disposed on at least one of the upper and lower outer surfaces;

wherein;

the pocket former is adapted to be encapsulated within one of the adjacently disposed concrete slabs.

17. The pocket former of claim 16 wherein:

the pocket former is sized and configured to receive a dowel plate;

the dowel plate being sized and configured to be complementary to the interior compartment and having a slidable portion and an embedded portion;

the slidable portion being configured to be laterally slidable within the interior compartment;

the embedded portion being configured to be encapsulated within the other one of the adjacently disposed concrete slabs.

18. The pocket former of claim 16 further comprising a perimeter flange extending about the compartment perimeter and having a generally vertically-oriented cross section with flared upper and lower flange portions.

19. The pocket former of claim 16 wherein the former alignment rib is oriented generally perpendicularly relative to the straight side.

20. An orthogonally shaped dowel plate for a disc dowel system adapted to minimize relative vertical displacement of adjacently disposed concrete slabs, the dowel plate comprising:

a slidable portion and an embedded portion;

wherein;

the slidable portion is configured to be laterally slidable within a pocket former having horizontally oriented upper and lower outer surfaces;

at least one of the upper and lower outer surfaces having at least one former alignment rib disposed thereon;

the embedded portion being configured to be encapsulated within one of the adjacently disposed concrete slabs.

21. The dowel plate of claim 20 wherein:

the pocket former has an interior compartment configured to be complementary to the generally orthogonally shaped dowel plate;

the interior compartment having an open, generally straight side and a compartment perimeter;

the interior compartment being configured to slidably receive the slidable portion.

22. A positioner bracket for installing an orthogonally shaped pocket former of a disc dowel system within a pour joint located between adjacent first and second concrete pours, the pour joint being formable by a concrete form, the positioner bracket comprising:

a base flange;

an orthogonally shaped plate portion extending laterally outwardly from the base flange and including upper and lower exterior surfaces and at least one positioner alignment rib formed on at least one of the exterior surfaces;

wherein;

the plate portion is sized and configured to be complementary to the pocket former;

the base flange being configured to be attachable to the concrete form.

23. The positioner bracket of claim 22 wherein:

the pocket former includes an interior compartment having at least one groove formed therein;

the groove being sized and configured to receive the positioner alignment rib such that the pocket former is held in alignment with the positioner bracket.