Abrasive cutter

a drill bit and cutter technology, applied in the direction of drilling accessories, roads, constructions, etc., can solve the problems of wasting considerable amount of labor cleaning up the area, affecting the safety of workers, and often having to cut holes in asphalt roads and parking lots by underground utilities, etc., and achieves the effect of high heat and easy replacemen

Inactive Publication Date: 2008-05-01
STAPLES LES
View PDF21 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]This and other objects of the invention are met by the asphalt cutter disclosed herein that includes a hollow cylindrical body with a plurality of longitudinally aligned, curved teeth evenly spaced apart along the body's lower perimeter edge. The teeth are curved structures that bend in the forward direction of rotation (e.g. clockwise direction in the Figs.). Each tooth includes a carbide blade with a dual beveled front edge aligned perpendicular to the cylindrical body's axis of rotation. The carbide blade is specifically hardened to withstand the high heat generated when cutting through asphalt. In the preferred embodiment, the teeth are welded into slots formed on to the lower edge of the cylindrical body. In a second embodiment, the teeth are welded directly to a replaceable ring welded onto the lower edge of the cylindrical body. By attaching the teeth to the replaceable ring, the entire set of teeth on the cylindrical body can be easily replaced by merely exchanging the ring.
[0011]In the preferred embodiment, at least one debris slot is formed on the sides of the cylindrical body to help the operator to remove debris trapped inside the cylindrical body.

Problems solved by technology

Underground utility companies often must cut holes in asphalt roads and parking lots.
Because asphalt roads and parking lots are typically six to eight inches thick, a substantial amount of water is normally dispensed which settles upon and eventually floods the areas of the road and the parking lot that surrounds the hole.
Also, because this water contains dirt and silt, many municipalities prohibit the deposit of this water into nearby storm water systems.
As a result, considerable amount of labor is spent cleaning up the area.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Abrasive cutter
  • Abrasive cutter
  • Abrasive cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

)

[0020]Referring to accompanying Figs., there is shown an asphalt cutter, generally indicated by reference number 10 designed to attach to a hydraulic motor 90 attached to the articulating boom 93 on a heavy piece of equipment, such as a backhoe, tractor, or shovel (not shown). Using the cutter 10, one or two workers can easily and quickly cut a plurality of holes in a layer of asphalt 80 in a relatively short time with little or no clean up.

[0021]The asphalt cutter 10 that includes a hollow cylindrical body 12 with a plurality of longitudinally aligned teeth 40 evenly spaced apart along the body's lower perimeter edge. The teeth 40 are curved structures that bend in a forward direction of rotation. Formed on each tooth 40 is a hardened carbide blade 50 with a cutting edge 52 perpendicularly aligned with the body's direction of rotation.

[0022]More specifically, the cylindrical body 12 is hollow with a lower opening 16 and a top surface 18. Attached to the top surface 18 is a coaxial...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An asphalt cutter that includes a hollow cylindrical body with a plurality of longitudinally aligned, curved teeth evenly spaced apart along the body's lower perimeter edge. The teeth are curved in a forward direction of the normal rotation of the body during use with a hardened carbide edge formed thereon. The teeth are slightly wider in cross-section than the side wall of the cylindrical body. During use, a circular gap is formed in the asphalt which enables a center plug formed therein to be easily removed by utility workers. Attached to the top end of the cylindrical body is a longitudinally aligned hollow neck with a top opening. During assembly, the drive shaft on a hydraulic motor attached to the articulating boom is inserted into the neck. A bolt connects the neck and drive shaft together. In the preferred embodiment, an optional elongated guide flag is longitudinally aligned with the cutter. During operation, the operator watches an arrow indicator printed on the side of the guide flag to maintain the drive shaft and cylindrical body in a vertically aligned position over the asphalt during the cutting process.

Description

[0001]This is a utility patent application which claims benefit of U.S. Provisional Application No. 60 / 856,083 filed on Nov. 1, 2006.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to rotating abrasive drill bits, and more particularly to abrasive drill bits capable of being used to drill holes in asphalt.[0004]2. Description of the Related Art[0005]Underground utility companies often must cut holes in asphalt roads and parking lots. Heretofore, utility companies have used a diamond bit to drill through the asphalt. Typically, a hole drilling team arrives at the site and creates a series of holes in the road or parking lot that later are used by a team of utility workers to install new utilities or to repair or replace old utilities. In order to cut holes with a diamond bit, a continuous stream of water must be applied to the drill bit to dissipate heat and to reduce friction.[0006]In most instances, the holes are drilled in locations where a c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E01C23/00E21B10/00
CPCE01C23/0885
InventorSTAPLES, LES
OwnerSTAPLES LES