David Barbera resumes & CV records
Resumes
David Barbera
David M Barbera, 534112 Roemer Dr NE, Parral, OH 44622
David Barbera Phones & Addresses
4112 Roemer Dr NE, Dover, OH 44622
10104 Hollingsworth Dr, Bolivar, OH 44612 330-8740018
East Canton, OH
Stuart, FL
Hutchinson Island, FL
11214 Hickory Hollow Rd NW, Bolivar, OH 44612 330-8740018
Work
Position:
Homemaker
Education
Degree:
High school graduate or higher
Mentions for David M Barbera
Publications & IP owners
Us Patents
Collapsible Rock Head
US Patent:
7367412, May 6, 2008
Filed:
Apr 26, 2006
Appl. No.:
11/412029
Inventors:
Anthony R. Barbera - Massillon OH, US
David M. Barbera - Bolivar OH, US
David M. Barbera - Bolivar OH, US
International Classification:
E21B 10/44
E02D 29/05
E02D 29/05
US Classification:
175274, 175323, 175 62, 175258, 175366, 299107
Abstract:
A rock head for use with an auger borer to bore a passageway through a body of soil and rock and simultaneously laying a pipe in that bored passageway. The rock head has a base connectable to the leading end of the auger. A plurality of movable mounts are provided on the base and a roller cone is secured to each movable mount. A spring is disposed between the movable mount and the base. The spring is compressed as the movable mount pivots the roller cones inwardly toward a central region of the base. This reduces the diameter of the rock head so that it can travel through the bore. Each movable mount is provided with at least one wheel so that it can ride smoothly through the bore. When the rock head exits the pipe, the springs automatically pivots each roller cone outwardly so that at least a portion thereof is disposed beyond the outermost edge of the base. In this second position, the rock head has a greater diameter than the pipe bore and therefore it cannot travel therethrough. When the auger is withdrawn through the pipe, the movable mounts pivot the roller cones from the second position back to the first position, thereby causing the rock head to collapse to a diameter sufficiently small enough to travel back through the pipe.
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