Concrete dowel placement sleeves

• US 5,005,331 A
• Filed: 04/10/1990
• Issued: 04/09/1991
• Est. Priority Date: 04/10/1990
• Status: Expired due to Term

• Current Assignee: Greenstreak Inc.
• Original Assignee: Lee A. Shaw, Leory E. Shaw, Ronald D. Shaw
• Inventors: Shaw, Ronald D., Shaw, Lee A., Shaw, Leory E.
• Primary Examiner(s): Scherbel, David A.
• Assistant Examiner(s): VAN PATTEN, MICHELE
• Application Number:
  US07/508,080
• Time in Patent Office: 364 Days
• Field of Search: 52/396, 52/677, 52/699, 52/701, 52/704, 404/60
• 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
• CPC Class Codes: F16B 13/141 Fixing plugs in holes by the use of settable material

Abstract

Slip and non-slip dowel placement sleeves are disclosed. The slip dowel placement sleeve generally comprises a tubular dowel receiving sheath having a closed distal end and an open proximal end. A connecting means of perpendicular flange is formed around the proximal opening of the sheath to facilitate attachment of the sheath to a concrete form. Smooth sections of dowel rod may then be advanced through holes drilled in the concrete form and into the interior compartment of the sheath. Concrete is poured within the form and the dowel rod remains slidably disposed within the interior of the sheath. Variations of the basic slip dowel placement sleeve of the invention includes a tapered "extractable" sleeve and a corrugated "grout tube" for placement of non-slip dowel or rebar.

Claims

1. A concrete dowel placement apparatus comprising:

a dowel receiving sheath comprising a generally tubular body having an outer surface, an open proximal end, a closed distal end and a hollow interior compartment extending axially therein;

a generally rectangular flange extending perpendicularly about said open proximal end of said sheath, said flange being formed to extend completely about said open proximal end and having an inner surface and a generally flat outer surface, wherein said outer surface of said flange is held in abutting contact with a flat surface of a concrete form to prevent seepage of concrete into said hollow interior compartment of said sheath; and

at least one stength imparting gusset extending between a proximal portion of said outer surface of said sheath and said inner surface of said flange.

2. The concrete dowel placement apparatus of claim 1 wherein a plurality of apertures are formed in said flange, said apertures being sized, configured and positioned to permit passage of nails therethrough in such manner as to facilitate nailing of said flange to said flat surface of said concrete form such that said flat outer surface of said flange is held in abutting contact with said flat surface of said form.

3. The concrete dowel placement apparatus of claim 1 wherein said interior compartment of said dowel receiving sheath is sized and configured to permit a dowel rod to be slidably inserted therein and to allow said dowel rod to remain longitudinally slidable therewithin so long as said dowel rod resides within said interior compartment of said sheath.

4. The concrete dowel placement apparatus of claim 1 wherein said apparatus is formed of molded plastic.

5. The concrete dowel placement apparatus of claim 1 wherein said closed distal end of said dowel receiving sheath comprises a non-removable end closure.