Screeding apparatus and method

• US 20050141963A1
• Filed: 02/28/2005
• Published: 06/30/2005
• Est. Priority Date: 07/01/2003
• Status: Active Grant

• Current Assignee: DoubleFlite Incorporated
• Original Assignee: DoubleFlite Incorporated
• Inventors: Holmes, Ned W.
• Granted Patent: US 7,104,723 B2
• Time in Patent Office: Days
• US Class Current: 404/118
• CPC Class Codes: E01C 19/405 with spreading-out, levelling or smoothing means other than the tamping or vibrating means for compacting or smoothing, e.g. with screws for spreading-out the previously dumped material, with non-vibratory lengthwise reciprocated smoothing beam E01C19/407 takes precedence
• CPC Class Codes: E01C 19/42 Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping or vibrating for distributing only E01C19/12; hand-actuated smoothing tools E01C19/44

Abstract

A screed assembly apparatus for loose or plastic materials such as placed and/or poured, uncured concrete previously placed on the ground or another support surface, includes a screed frame, and mounted thereon, a striker for engaging and spreading the materials and a rotatable auger for moving the material longitudinally along the screed frame. The auger provides a pair of intertwined spiral flight coils. The striker is spaced to one side of the auger and in parallel thereto. An auger mounting means and a motive power means are engaged for rotating the auger to remove excess portions of the concrete from the pour.

Claims

1. A screed apparatus for smoothing a surface of poured concrete, said apparatus comprising:

a screed frame, and mounted thereon, a striker for engaging and spreading the poured concrete, and a rotatable auger, for moving the concrete longitudinally along the screed frame, the auger providing a pair of intertwined spiral flight coils extending outwardly from an auger core, the coils continuous between a first and a second ends of the auger core, the flight coils having a height of between 1 and 5 inches;

the striker spaced to one side of the auger and in parallel thereto.

2. The apparatus of claim 1 wherein the flight coils have an overall outside diameter between 4 and 12 inches.

3. The apparatus of claim 1 wherein the flight coils are approximately 1-⅞

inches in height.

4. The apparatus of claim 1 wherein the auger core diameter is approximately 5.5 inches in diameter.

5. The apparatus of claim 1 wherein the flights of the auger core are spaced approximately 4.5 inches apart.

6. A screeding method for smoothing a surface of poured concrete, said method comprising the steps of:

mounting a striker and a rotatable auger core onto an operating screed frame, the striker and the auger core placed in side-by-side parallel positions;

engaging a pair of intertwined spiral flight coils of between 1 and 5 inches in height onto the auger core continuously between a first and a second ends of the auger core, and placing the spiral flights for moving the poured concrete longitudinally along the screed frame,

7. A screeding method for smoothing a surface of poured concrete, said method comprising the steps of:

mounting a striker and a rotatable auger core onto an operating screed frame, the striker and the auger core placed in side-by-side parallel positions;

engaging a pair of intertwined spiral flight coils of between 4 and 12 inches in outside diameter onto the auger core continuously between a first and a second ends of the auger core, and placing the spiral flights for moving the poured concrete longitudinally along the screed frame,