Dowel placement apparatus for monolithic concrete pour and method of use

• US 5,487,249 A
• Filed: 03/28/1994
• Issued: 01/30/1996
• Est. Priority Date: 03/28/1994
• Status: Expired due to Term

• Current Assignee: Greenstreak Inc.
• Original Assignee: Lee A. Shaw, Ronald D. Shaw
• Inventors: Shaw, Lee A., Shaw, Ronald D.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): Yip, Winnie S.
• Application Number:
  US08/219,137
• Time in Patent Office: 673 Days
• Field of Search: 52/223.13, 52/396.02, 52/699, 52/677, 52/704, 52/701, 52/700, 404/47, 404/59, 404/60, 404/61
• US Class Current: 52/396.02
• 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: E04B 1/483 Shear dowels to be embedded in concrete

Abstract

A concrete dowel placement apparatus comprising a base member which is rigidly attachable to a concrete form. Connected to the base member is an elongate, tubular dowel receiving sheath which defines an interior compartment extending axially therein. The dowel receiving sheath is connected to the base member in a manner wherein a dowel rod of predetermined size is extensible into and longitudinally slidable within the interior compartment thereof.

Claims

1. A concrete dowel placement apparatus attached to a concrete form which has an aperture therethrough, comprising:

a base member rigidly attachable to the concrete form, said base member comprising;

(a) an elongate, tubular sleeve portion for insertion through the aperture of the concrete form having opposed first and second ends, an outer surface and an inner surface defining a bore extending longitudinally through the sleeve portion; and

(b) a flange portion formed about and extending outwardly from the first end of the sleeve portion and being engaged to the concrete form after the insertion of said sleeve portion through the aperture of the concrete form;

an elongate, tubular dowel receiving sheath attached to said base member and defining an open proximal end, a closed distal end, and a longitudinally extending interior compartment;

the attachment of the sheath to the base member being facilitated by the slidable insertion of the sheath into the bore in a manner wherein the distal end of the sheath. protrudes from the second end of the sleeve portion and the proximal end of the sheath is substantially flush with the flange portion.

2. The apparatus of claim 1 wherein said flange portion includes at least one aperture disposed therein sized to permit the passage of a fastener through the flange portion for facilitating the rigid attachment of the base member to the concrete form subsequent to the insertion of said sleeve portion into an aperture extending through the form and the abutment of the flange portion against the form.

3. The apparatus of claim 2 wherein said flange portion includes four (4) apertures disposed therein in intervals of approximately 90 degrees.

4. The apparatus of claim 1 wherein said flange portion has a generally circular configuration and extends radially from the first end of the sleeve portion.

5. The apparatus of claim 1 wherein said sleeve portion further includes a plurality of dimples formed on and extending about the outer surface thereof, said dimples being equidistantly spaced from the flange portion and adapted to facilitate the rigid attachment of the base member to the concrete form upon the insertion of said sleeve portion into an aperture extending through the form and the abutment of the flange portion against the form.

6. The apparatus of claim 5 wherein said sleeve portion includes four dimples formed on the outer surface thereof in intervals of approximately ninety degrees.

7. The apparatus of claim 5 wherein said concrete form comprises a metal imbed form.

8. The apparatus of claim 1 wherein said base member further comprises an annular collar member releasably attachable to the sleeve portion subsequent to the insertion of the sleeve portion into an aperture extending through the form and the abutment of the flange portion against the form, the attachment of said collar member to said sleeve portion being adapted to maintain said base member in rigid attachment to the form.

9. The apparatus of claim 8 wherein said sleeve portion further includes a pair of spline portions extending radially from the second end thereof in opposed relation and said collar member defines a central opening configured to facilitate the extension of the collar member over the second end of the sleeve portion, the rotation of the collar member subsequent to the extension thereof over the second end being operable to maintain said base member in rigid attachment to said form.

10. The apparatus of claim 8 wherein said concrete form comprises a metal imbed form.

11. The apparatus of claim 1 wherein said base member and said sheath are fabricated from plastic.

12. The apparatus of claim 1 wherein said concrete form comprises a wooden stud.