Tool for scarifying concrete

Claim 2

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded and brazed in said main body and having free end portions projecting from the working face thereof, said free end portions terminating in flat end faces angularly disposed to said longitudinal axis, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face.

Claim 3

The combination according to claim 1, in which said carbide tips are cylindrical in configuration and said flat faces are circular so as to present a plurality of arcuate cutting edges to the surface of the concrete to be scarified, whereby upon wear occuring on said arcuate edges, the cylindrical carbide tips may be rotated about their longitudinal axes to present unworn arcuate cutting edges to the surface of the concrete to be scarified.

Claim 4

The combination according to claim 1, in which said carbide tips are quadrilateral in cross section whereby a plurality of edges of said carbide tip are presented to the surface of the concrete to be scarified.

Claim 5

The combination according to claim 1, in which said main body is generally symmetrical about a longitudinal axis, socket means provided in said main body extending thereinto from the end thereof opposite said working face, a portion of said main body comprising a shank of lesser transverse dimension than the remainder of said main body, said socket being formed in said shank portion of lesser transverse dimension, a peripheral groove formed around said shank portion adjacent its end remote from said working face, and said working face being formed on said main body portion of larger transverse dimension, a drive mechanism including a drive shaft adapted to engage the socket in said main body, and resilient spring clip means disposed between said drive mechanism and said main body and resiliently engaging said peripheral groove to resiliently retain the main body releasably attached to said driving mechanism.

Claim 6

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being cylindrical in configuration so as to present a plurality of arcuate cutting edges to the surface of the concrete to be scarified, whereby upon wear occuring on said arcuate cutting edges, the cylindrical carbide tips may be rotated about their longitudinal axis to present unworn arcuate cutting edges to the surface of the concrete to be scarified; (d) said carbide tips embedded in said main body being arranged in rows, with the carbide tips of one row being angularly disposed to the carbide tips of the opposite row.

Claim 7

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being cylindrical in configuration so as to present a plurality of arcuate cutting edges to the surface of the concrete to be scarified, whereby upon wear occuring on said arcuate cutting edges, the cylindrical carbide tips may be rotated about their longitudinal axis to present unworn arcuate cutting edges to the surface of the concrete to be scarified; (d) said carbide tips embedded in said main body being arranged in rows, with the carbide tips of one row being angularly disposed to the carbide tips of the opposite row.

Claim 8

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being elongated and quadrilateral in cross section whereby a plurality of edges of said carbide tip are presented to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a series of rows with all of the carbide tips of all rows inclined in the same direction.

Claim 9

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being elongated and quadrilateral in cross section whereby a plurality of edges of said carbide tip are presented to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a series of rows with all of the carbide tips of all rows inclined in the same direction.

Claim 10

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being elongated and quadrilateral in cross section whereby a plurality of edges of said carbide tip are presented to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a plurality of rows, with the carbide tips of one row being angularly disposed with respect to the carbide tips of an adjacent row.

Claim 11

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being elongated and quadrilateral in cross section whereby a plurality of edges of said carbide tip are presented to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a plurality of rows, with the carbide tips of one row being angularly disposed with respect to the carbide tips of an adjacent row.

Claim 12

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being cylindrical in configuration so as to present a plurality of arcuate cutting edges to the surface of the concrete to be scarified, whereby upon wear occuring on said arcuate cutting edges, the cylindrical carbide tips may be rotated about their longitudinal axis to present unworn arcuate cutting edges to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a plurality of rows, the carbide tips of one row being inclined toward a peripheral portion of said main body, a second row of said carbide tips being inclined toward a peripheral portion of said main body diametrically opposite to said first mentioned peripheral portion; and the remaining carbide tips being arranged in a row between said first and second carbide tip rows, with the end carbide tip of said intermediate row of carbide tips being angularly disposed to one another and inclined toward diametrically opposed peripheral portions of said main body.

Claim 13

A tool for scarifying concrete comprising: (a) a main body having a working face thereof defined by an outer periphery and adapted to face in the direction of a concrete surface requiring scarifying; and (b) a plurality of elongated carbide tips symmetrical about a longitudinal axis and embedded in said main body and having free end portions projecting from the working face thereof, each of said carbide tips embedded in said body at an angle to said working face whereby said free end portions lie within the outer periphery of said working face; (c) said carbide tips being cylindrical in configuration so as to present a plurality of arcuate cutting edges to the surface of the concrete to be scarified, whereby upon wear occuring on said arcuate cutting edges, the cylindrical carbide tips may be rotated about their longitudinal axis to present unworn arcuate cutting edges to the surface of the concrete to be scarified; (d) said carbide tips being arranged in a plurality of rows, the carbide tips of one row being inclined toward a peripheral portion of said main body, a second row of said carbide tips being inclined toward a peripheral portion of said main body diametrically opposite to said first mentioned peripheral portion; and the remaining carbide tips being arranged in a row between said first and second carbide tip rows, with the end carbide tip of said intermediate row of carbide tips being angularly disposed to one another and inclined toward diametrically opposed peripheral portions of said main body.