CUTTING TOOL FOR USE WITH A HAMMER DRILL

Abstract

A cutting tool for use with a hammer drill is a cutting tool that splits a Sonotube by inserting it between the inner surface of the Sonotube and the outer surface of the concrete pillar and driving it vertically downward using a hammer drill. The Sonotube is easily split and removed from the pillar without risk of injury.

Claims

1. A cutting tool for use with a hammer drill, comprising: an elongated shaft portion including; a proximal end adapted to be releasably and securely held by a releasable attachment portion of a hammer drill; a distal end opposite said proximal end; and an axis extending between said proximal end and said distal end; a slide plate; wherein said slide plate is attached to said distal end of said elongated shaft portion; wherein said slide plate has a curved cross-section adapted to be substantially similar to a cross-section of a chosen cylindrical concrete form; an inner surface adapted to contact an outer surface of a cylindrical concrete column when in use; and an outer surface adapted to contact an inner surface of said chosen cylindrical concrete form surrounding said cylindrical concrete column when in use; and an elongated knife blade; wherein said elongated knife blade is attached to said outer surface of said slide plate, and is oriented in a parallel direction to said axis of said elongated shaft portion; wherein said cutting tool is adapted to be used to cut cylindrical concrete forms when in use such that said cylindrical concrete form can be peeled away from a formed concrete column.

2. The cutting tool of claim 1, wherein said elongated knife blade is attached to said outer surface of said slide plate at a 90 degree angle.

3. The cutting tool of claim 1, wherein said slide plate is attached to said distal end of said elongated shaft portion at an angle of between 5 degrees and 30 degrees.

4. The cutting tool of claim 1, wherein said slide plate includes a proximal edge portion attached to said distal end of said elongated shaft portion, and a beveled distal edge portion located opposite said proximal edge portion and adapted to wedge between said cylindrical concrete form and said formed concrete column when in use.

5. The cutting tool of claim 4, wherein said elongated knife blade has a length extending in a direction co-linear with said axis of said elongated shaft portion; wherein said knife blade extends from said beveled distal edge portion; and wherein said elongated knife blade has a height increasing along said length from said beveled distal edge portion to said proximal edge portion.

6. The cutting tool of claim 5, wherein said knife blade extends past said proximal edge portion and is further attached along a length of said elongated shaft portion.

7. The cutting tool of claim 1, wherein said cutting tool is formed from a material chosen from a list of materials consisting of iron, steel, rolled steel, hardened steel, and ceramic.

8. A cutting tool assembly for use upon a cylindrical concrete form, comprising: a hammer drill including: a releasable attachment portion; wherein said releasable attachment portion is adapted to releasably and securely hold a cutting tool; wherein said hammer drill is adapted to provide repetitive linear movement to an attached cutting tool; a cutting tool comprising: an elongated shaft portion including; a proximal end adapted to be releasably and securely held by said releasable attachment portion of said hammer drill; a distal end opposite said proximal end; and an axis extending between said proximal end and said distal end; a slide plate; wherein said slide plate is attached to said distal end of said elongated shaft portion; wherein said slide plate has a curved cross-section adapted to be substantially similar to a cross-section of a chosen cylindrical concrete form; an inner surface adapted to contact an outer surface of a cylindrical concrete column when in use; and an outer surface adapted to contact an inner surface of said chosen cylindrical concrete form surrounding said cylindrical concrete column when in use; and an elongated knife blade; wherein said elongated knife blade is attached to said outer surface of said slide plate, and is oriented in a parallel direction to said axis of said elongated shaft portion; wherein said cutting tool assembly is adapted to be used to cut said cylindrical concrete form when in use such that said cylindrical concrete form can be peeled away from a formed concrete column.

9. The cutting tool of claim 8, wherein said elongated knife blade is attached to said outer surface of said slide plate at a 90 degree angle.

10. The cutting tool of claim 8, wherein said slide plate is attached to said distal end of said elongated shaft portion at an angle of between 5 degrees and 30 degrees.

11. The cutting tool of claim 8, wherein said slide plate includes a proximal edge portion attached to said distal end of said elongated shaft portion, and a beveled distal edge portion located opposite said proximal edge portion and adapted to wedge between said cylindrical concrete form and said formed concrete column when in use.

12. The cutting tool of claim 11, wherein said elongated knife blade has a length extending in a direction co-linear with said axis of said elongated shaft portion; wherein said knife blade extends from said beveled distal edge portion; and wherein said elongated knife blade has a height increasing along said length from said beveled distal edge portion to said proximal edge portion.

13. The cutting tool of claim 12, wherein said knife blade extends past said proximal edge portion and is further attached along a length of said elongated shaft portion.

14. The cutting tool of claim 8, wherein said cutting tool is formed from a material chosen from a list of materials consisting of iron, steel, rolled steel, hardened steel, and ceramic.

15. The cutting tool of claim 8, wherein said hammer drill is an electric hammer drill.

16. The cutting tool of claim 15, wherein said electric hammer drill is battery operated.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The figures which accompany the written portion of this specification illustrate embodiments and method(s) of use for the present invention, a cutting tool for use with a hammer drill, constructed and operative according to the teachings of the present invention.

[0015] FIG. 1 shows a perspective view illustrating an in-use condition of a cutting tool for use with a hammer drill according to an embodiment of the present invention.

[0016] FIG. 2 is a perspective view illustrating the cutting tool for use with a hammer drill according to an embodiment of the present invention of FIG. 1.

[0017] FIG. 3 is a front elevation view illustrating the cutting tool for use with a hammer drill according to an embodiment of the present invention of FIG. 1.

[0018] FIG. 4 is an end view illustrating the cutting tool for use with a hammer drill according to an embodiment of the present invention of FIG. 1.

[0019] The various embodiments of the present invention will hereinafter be described in conjunction with the appended drawings, wherein like designations denote like elements.

DETAILED DESCRIPTION

[0020] As discussed above, embodiments of the present invention relate to a power tool bit and more particularly to a cutting tool for use with a hammer drill as used to improve the safety and ease of use when removing Sonotubes from concrete pillars.

[0021] Generally speaking, a cutting tool for use with a hammer drill is a cutting tool that splits a Sonotubes by inserting it between the inner surface of the Sonotubes and the outer surface of the concrete pillar and driving it vertically downward using a hammer drill. The Sonotubes is easily split and removed from the pillar without risk of injury.

[0022] Referring to the drawings by numerals of reference there is shown in FIG. 1, a perspective view illustrating an in-use condition of cutting tool 100 for use with hammer drill 185 according to an embodiment of the present invention.

[0023] Cutting tool 100 for use with hammer drill 185 may comprise an elongated shaft portion 105 including proximal end 106 adapted to be releasably and securely held by releasable attachment portion 186 of hammer drill 185, distal end 107 opposite proximal end 106, and axis 108 extending between proximal end 106 and distal end 107. Slide plate 110 is attached to distal end 107 of the elongated shaft portion 105 and has curved cross-section 111 adapted to be substantially similar to the cross-section of a chosen cylindrical concrete form 180. Inner surface 112 is adapted to contact outer surface 113 of the cylindrical concrete column 190 when in use, and outer surface 113 is adapted to contact inner surface 112 of the chosen cylindrical concrete form 180 surrounding the cylindrical concrete column 190 when in use.

[0024] Cutting tool assembly 120 for use upon cylindrical concrete form 180 may comprise hammer drill 185 which may be either operated by AC power supply or by DC rechargeable batteries, including releasable attachment portion 186 that is adapted to releasably and securely hold cutting tool 100. Hammer drill 185 is adapted to provide repetitive linear movement to an attached cutting tool 100 that has an elongated shaft portion 105 including proximal end 106 adapted to be releasably and securely held by releasable attachment portion 186 of hammer drill 185, distal end 107 opposite proximal end 106, axis 108 extending between proximal end 106 and distal end 107, and slide plate 110. Slide plate 110 is attached to distal end 107 of the elongated shaft portion 105.

[0025] Referring now to FIG. 2, a perspective view illustrating cutting tool 100 for use with hammer drill 185 according to an embodiment of the present invention of FIG. 1.

[0026] An elongated knife blade 114 is attached to outer surface 113 of slide plate 110, and is oriented in a parallel direction to axis 108 of the elongated shaft portion 105. Cutting tool 100 is adapted to be used to cut cylindrical concrete forms 180 when in use such that cylindrical concrete form 180 can be peeled away from a formed concrete column 190. The elongated knife blade 114 is attached to outer surface 113 of slide plate 110 at a 90 degree angle. Slide plate 110 is attached to distal end 107 of the elongated shaft portion 105 at an angle of between 5 degrees and 30 degrees.

[0027] Referring now to FIG. 3, is a front elevation view illustrating cutting tool 100 for use with hammer drill 185 according to an embodiment of the present invention of FIG. 1.

[0028] Slide plate 110 includes proximal edge portion 115 attached to distal end 107 of the elongated shaft portion 105, and beveled distal edge portion 116 located opposite proximal edge portion 115 and adapted to wedge between cylindrical concrete form 180 and the formed concrete column 190 when in use. The elongated knife blade 114 has a length extending in a direction co-linear with axis 108 of the elongated shaft portion 105. Knife blade 114 extends from beveled distal edge portion 116 and has height 125 increasing along length 130 from beveled distal edge portion 116 to proximal edge portion 115. Knife blade 114 extends past proximal edge portion 115 and is further attached along a length of the elongated shaft portion 105. Cutting tool 100 is formed from a material chosen from a list of materials consisting of iron, steel, rolled steel, hardened steel, and ceramic.

[0029] Referring now to FIG. 4, showing an end view illustrating cutting tool 100 for use with hammer drill 185 according to an embodiment of the present invention of FIG. 1.

[0030] Slide plate 110 has curved cross-section 111 adapted to be substantially similar to a cross-section of a chosen cylindrical concrete form 180 inner surface 112 and is adapted to contact outer surface 113 of a cylindrical concrete column 190 when in use, and outer surface 113 adapted to contact inner surface 112 of the chosen cylindrical concrete form 180 surrounding the cylindrical concrete column 190 when in use. An elongated knife blade 114 is attached to outer surface 113 of slide plate 110, and is oriented in a parallel direction to axis 108 of the elongated shaft portion 105.

[0031] Cutting tool assembly 120 is adapted to be used to cut cylindrical concrete form 180 when in use such that cylindrical concrete form 180 can be peeled away from a formed concrete column 190. The elongated knife blade 114 is attached to outer surface 113 of slide plate 110 at a 90 degree angle. Slide plate 110 is attached to distal end 107 of the elongated shaft portion 105 at an angle of between 5 degrees and 30 degrees. Slide plate 110 includes proximal edge portion 115 attached to distal end 107 of the elongated shaft portion 105, and beveled distal edge portion 116 located opposite proximal edge portion 115 and adapted to wedge between cylindrical concrete form 180 and the formed concrete column 190 when in use. The elongated knife blade 114 has a length extending in a direction co-linear with axis 108 of the elongated shaft portion 105. Knife blade 114 extends from beveled distal edge portion 116. The elongated knife blade 114 has height 125 increasing along length 130 from beveled distal edge portion 116 to proximal edge portion 115 and extends past proximal edge portion 115 and is further attached along a length of the elongated shaft portion 105. Cutting tool 100 is formed from a material chosen from a list of materials consisting of iron, steel, rolled steel, hardened steel, and ceramic. Hammer drill 185 is preferably electric hammer drill 195 and is battery operated.

[0032] Cutting tool assembly 120 may be manufactured and provided for sale in a wide variety of sizes and shapes for a wide assortment of applications. Upon reading this specification, it should be appreciated that, under appropriate circumstances, considering such issues as design preference, user preferences, marketing preferences, cost, structural requirements, available materials, technological advances, etc., other kit contents or arrangements such as, for example, including more or less components, customized parts, different color combinations, parts may be sold separately, etc., may be sufficient.

[0033] Upon reading this specification, it should be appreciated that, under appropriate circumstances, considering such issues as design preference, user preferences, marketing preferences, cost, structural requirements, available materials, technological advances, etc., other methods of use arrangements such as, for example, different orders within above-mentioned list, elimination or addition of certain steps, including or excluding certain maintenance steps, etc., may be sufficient.

[0034] The embodiments of the invention described herein are exemplary and numerous modifications, variations and rearrangements can be readily envisioned to achieve substantially equivalent results, all of which are intended to be embraced within the spirit and scope of the invention. Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientist, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application.