Screeding apparatus and method

• US 20040076472A1
• Filed: 07/01/2003
• Published: 04/22/2004
• Est. Priority Date: 10/18/2002
• Status: Abandoned Application

• Current Assignee: Ned W. Holmes
• Original Assignee: Ned W. Holmes
• Inventors: Holmes, Ned W.
• Application Number:
  US10/612,360
• Publication Number:
  US 20040076472A1
• 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 assembly apparatus for loose or plastic materials such as placed and/or poured, uncured concrete previously placed on the ground or another support surface, said apparatus comprising:

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 providing a pair of intertwined spiral flight coils, the striker spaced to one side of the auger and in parallel thereto;

auger mounting means; and

motive power means engaged for rotating the auger.

2. A screeding auger comprising:

a cylindrical body supporting on an outer surface thereof, dual intertwined spiral flight coils extensive between ends of the cylindrical body, and a pair of end blocks fixed in ends of the cylindrical body, the end blocks providing longitudinally extensive opposing rods having means for keyed engagement therein.

3. A screeding method for loose or plastic materials such as placed and/or poured, uncured concrete previously placed on the ground or another support surface, the method comprising the steps of:

mounting a striker and a rotatable cylinder in parallel on a screed frame;

intertwining dual spiral flight coils on an outside surface of the cylinder from between ends of the cylinder;

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

positioning the auger partially immersed in the uncured concrete; and

rotating the auger for removal of an excess portion of the concrete while drawing the auger and the striker in a lateral direction.

4. The screeding method of claim 3 comprising the further steps of fixing a pair of end blocks in ends of the cylindrical body;

extending opposing rods from the end blocks longitudinally and engaging keyed apertures in the opposing rods with a motive means for rotating the auger.