Soft concrete saw
OwnerEdward Chiuminatta, Alan Ray Chiuminattainventors
Life of this patent
Estimating the term…
Abstract
In order to cut soft concrete before it has completely hardened, or about 12 to 18 hours after finishing, a rotating cutting blade and its drive motor are mounted on a wheeled support platform. The blade extends through a slot in the platform, and also through a skid plate depending from the platform, in order to cut the concrete below the skid plate. The slot and the skid plate are sized to support the concrete as it is being cut and to inhibit cracking and chipping of the concrete during cutting. The slot preferably has as little space as possible between the sides of the slot and the adjacent sides of the cutting blade. An extendable handle allows the device to be used beyond the physical reach of the operator.
Claims39
A concrete saw for cutting grooves in a concrete surface, the saw having a motor rotating a concrete cutting blade with a leading cutting edge, two sides and a trailing edge, the cutting blade being rotated in an upcut rotation by a motor, comprising:
- at least one support surface mounted on the saw so that the support surface contacts the concrete surface within 3/16 inches of at least one side of the cutting blade at the location where the cutting edge exits from the concrete during cutting of the concrete;
- and
- a wheel connected to the saw so as to support a portion of the saw's weight as the saw moves across the concrete surface during cutting.
A concrete saw for cutting grooves in a concrete surface, comprising:
- a circular concrete cutting blade having a leading cutting edge, sides and a trailing edge;
- a motor connected to the saw and further connected to rotate the cutting blade in an upcut direction during cutting;
- at least one support surface depending from the saw toward the surface of the concrete and configured so that the support surface contacts the concrete surface within 0.125 inches of at least one side of the cutting blade where the leading cutting edge exits from the concrete during cutting of the concrete, the support not contacting the groove beyond the trailing edge of the blade;
- and
- a rollable support connected to the saw so as to support a portion of the weight of the saw as the saw moves across the concrete surface during cutting.
A concrete saw for cutting grooves in a concrete surface, comprising:
- a circular concrete cutting blade having a leading cutting edge, sides and a trailing edge;
- a motor connected to the saw and further connected to rotate the cutting blade in an upcut direction during cutting;
- at least one support surface connected to the saw and depending toward the surface of the concrete, the support surface being configured to contact the concrete surface within 1/16 to 1/8 inches of each side of the cutting blade adjacent a sufficient portion of the cutting blade sufficient to reduce the spalling, chipping and cracking of the concrete surface at the groove from cutting of the concrete, the support not contacting the groove beyond the location where the trailing edge of the blade enters the concrete;
- and
- a rollable support connected to the saw to facilitate moving the saw across the concrete surface during cutting, the rollable support and support surface being sized so that the saw does not leave visually perceptible marks on the concrete surface when the concrete surface is cut at a hardness of about 1200 psi.
A concrete saw for cutting grooves in a concrete surface with a circular concrete cutting blade, comprising:
- a circular concrete cutting blade having a leading cutting edge with sides, and a trailing edge with sides;
- a first support connected to the saw and configured to contact the concrete surface within 3/16 inches of each side of the leading cutting edge as the cutting blade exits from the concrete surface during cutting;
- a second support connected to the saw and configured to contact the concrete surface within 3/16 inches of each side of the trailing edge as the cutting blade enters the concrete surface during cutting, whereby the first and second supports contact the concrete surface along a portion of the cutting blade sufficient to reduce the spalling, chipping and cracking of the concrete surface at the groove during cutting of the concrete, the second support not contacting the groove beyond the location where the trailing edge of the blade enters the concrete;
- and
- wheels movably supporting the saw on the concrete during cutting, the wheels being connected to the saw so that they do not roll over the groove after it is cut, the wheels of such size relative to the weight of the saw that the wheels leave substantially no perceptible indentations on the concrete surface when the concrete surface is cut at a hardness of about 1200 psi.
A concrete saw for cutting grooves in a concrete surface with a circular concrete cutting blade, comprising:
- a circular concrete cutting blade having a leading cutting edge with first and second sides and a trailing edge with first and second sides corresponding to said sides of the leading cutting edge;
- a motor connected to the saw so as to rotate the cutting blade in an upcut direction;
- a first support connected to the saw and configured to contact the concrete surface within 3/16 inches of the first side of the leading cutting edge as the cutting blade exits from the concrete surface during cutting;
- a second support connected to the saw and configured to contact the concrete surface within 3/16 inches of the second side of the leading cutting edge as the cutting blade exits from the concrete surface during cutting, whereby the first and second supports contact the concrete surface along a portion of the cutting blade sufficient to reduce the spalling, chipping and cracking of the concrete surface at the groove during cutting of the concrete;
- and
- wheels movably supporting the saw on the concrete during cutting, the wheels being connected to the saw so that they do not roll over the groove after it is cut, the wheels of such size relative to the weight of the saw that the wheels leave substantially no perceptible indentations on the concrete surface when the concrete surface is cut at a hardness of about 1200 psi.
Dependencies are inferred from the claim text.