Concrete dowel placement apparatus

• US 5,678,952 A
• Filed: 11/16/1995
• Issued: 10/21/1997
• Est. Priority Date: 11/16/1995
• 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): Lisehora, James
• Application Number:
  US08/572,153
• Time in Patent Office: 705 Days
• Field of Search: 52/396.02, 52/396.03, 52/396.08, 52/704, 52/706, 14/73.1, 404/48, 404/51, 404/56, 404/59, 404/60, 404/62, 404/63, 404/65, 404/70, 404/134, 404/135, 404/136
• US Class Current: 404/62
• 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

Abstract

A concrete dowel placement apparatus comprising a base member and an elongate, tubular dowel receiving sheath which is connectible to the base member. The base member comprises an outer sleeve having first and second ends, and an inner sleeve which is disposed within the outer sleeve. Extending between the inner and outer sleeves is at least one reinforcement wall. Extending about the first end of the outer sleeve is a flange portion which defines a generally flat back surface. The inner sleeve defines an aperture which extends from the second end of the outer sleeve to the back surface of the flange portion, and is sized to accommodate a fastener such as a nail to facilitate the attachment of the base member to a concrete form subsequent to the abutment of the back surface of the flange portion thereagainst. The sheath has an open proximal end, a closed distal end, and a hollow interior comportment extending longitudinally therein, with the proximal end being slidably extensible over the outer sleeve such that the outer sleeve resides within the interior compartment.

Claims

1. A concrete dowel placement apparatus, comprising:

a base member comprising;

an outer sleeve having first and second ends;

an inner sleeve disposed within the outer sleeve;

at least one reinforcement wall extending between the inner and outer sleeves; and

a flange portion extending about the first end of the outer sleeve and defining a generally flat back surface;

said inner sleeve defining an aperture which extends from the second end of the outer sleeve to the back surface of the flange portion and is sized to accommodate a fastener to facilitate the attachment of the base member to a concrete form subsequent to the abutment of the back surface of the flange portion thereagainst;

an elongate, tubular dowel receiving sheath having an open proximal end, a closed distal end, and a hollow interior compartment extending longitudinally therein;

the open proximal end of the sheath being slidably extensible over the outer sleeve such that the outer sleeve resides within the interior compartment.

2. The placement apparatus of claim 1 wherein said inner and outer sleeves each have generally circular cross-sectional configurations, and said inner sleeve is concentrically positioned within said outer sleeve.

3. The placement apparatus of claim 1 wherein said outer sleeve has a generally square cross-sectional configuration and said inner sleeve has a generally circular cross-sectional configuration, said inner sleeve being centrally positioned within said outer sleeve.

4. The placement apparatus of claim 1 wherein said base member includes four reinforcing walls extending between the inner and outer sleeves at intervals of approximately 90 degrees.

5. The placement apparatus of claim 1 wherein said flange portion has a generally circular configuration.

6. A concrete dowel placement apparatus, comprising:

a base member comprising;

an outer sleeve having first and second ends;

an inner sleeve disposed within the outer sleeve;

at least one reinforcement wall extending between the inner and outer sleeves; and

a flange portion extending about the first end of the outer sleeve and defining a back surface;

said inner sleeve defining an aperture which extends from the second end of the outer sleeve to the back surface of the flange portion;

a dowel receiving sheath having an open proximal end, a closed distal end, and a hollow interior compartment extending longitudinally therein;

the open proximal end of the sheath being extensible over the outer sleeve such that at least a portion of the outer sleeve resides within the interior compartment.

7. The placement apparatus of claim 6 wherein said inner and outer sleeves each have generally circular cross-sectional configurations, and said inner sleeve is concentrically positioned within said outer sleeve.

8. The placement apparatus of claim 6 wherein said outer sleeve has a generally square cross-sectional configuration and said inner sleeve has a generally circular cross-sectional configuration, said inner sleeve being centrally positioned within said outer sleeve.

9. The placement apparatus of claim 6 wherein said base member includes four reinforcing walls extending between the inner and outer sleeves at intervals of approximately ninety degrees.

10. The placement apparatus of claim 6 wherein said flange portion has a generally circular configuration.