Top surface drilling device and methods for drilling a core in a top surface
First Claim
Patent Images
1. A top surface drilling device for creating a cavity in a top surface for a horizontal drilling device in relation to roadway construction, comprising:
- a first core bit for creating an annular first removable core in the top surface; and
a second core bit disposed in the first core bit for creating a cylindrical second removable core in the top surface, the second core bit having a smaller diameter than a diameter of the first core bit;
a gear mechanism configured to drive the first core bit and the second core bit simultaneously at different angular speeds;
wherein removal of the first removable core and the second removable core creates the cavity in the top surface for the horizontal drilling device; and
wherein the first removable core and the second removable core created by the first core bit and the second core bit are reinsertable into the cavity in the top surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A top surface drilling device has a core bit and a drill head disposed in the core bit. The drill head has a smaller diameter than that of the core bit, and the core bit and the drill head can be driven at different angular speeds.
19 Citations
16 Claims
-
1. A top surface drilling device for creating a cavity in a top surface for a horizontal drilling device in relation to roadway construction, comprising:
-
a first core bit for creating an annular first removable core in the top surface; and a second core bit disposed in the first core bit for creating a cylindrical second removable core in the top surface, the second core bit having a smaller diameter than a diameter of the first core bit; a gear mechanism configured to drive the first core bit and the second core bit simultaneously at different angular speeds; wherein removal of the first removable core and the second removable core creates the cavity in the top surface for the horizontal drilling device; and wherein the first removable core and the second removable core created by the first core bit and the second core bit are reinsertable into the cavity in the top surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for drilling a core in a top surface for the creation of a cavity for a horizontal drilling device in relation to roadway construction, comprising:
-
drilling with a first core bit at a first angular speed to define a circular cut for creating an annular first removable core in the top surface; simultaneously with the drilling with the first core bit, drilling with a second core bit of smaller diameter than the first core bit for creating a cylindrical second removable core in the top surface, at a second angular speed different from the first angular speed to create a drill hole inside the circular cut; removing the second removable core; introducing a rod system into the drill hole created by removal of the second removable core; and removing the first removable core using the rod system; wherein removal of the first removable core and the second removable core creates the cavity in the top surface for the horizontal drilling device; and wherein the first removable core and the second removable core created by the first core bit and the second core bit are reinsertable into the cavity in the top surface. - View Dependent Claims (11)
-
-
12. A top surface drilling device for creating a cavity in a top surface for a horizontal drilling device in relation to roadway construction, comprising:
-
a first core bit for creating an annular first removable core in the top surface; a second core bit disposed in and concentric with the first core bit for creating a cylindrical second removable core in the top surface, the second core bit having a smaller diameter than a diameter of the first core bit; a planetary gearing comprising a sun gear, a ring gear and one or more planetary gears, the sun gear and the ring gear engaging with the one or more planetary gears, the sun gear operatively connected to the second core bit, and the one or more planetary gears operatively connected to the first core bit, wherein removal of the first removable core and the second removable core creates the cavity in the top surface for the horizontal drilling device; and wherein the first removable core and the second removable core created by the first core bit and the second core bit are reinsertable into the cavity in the top surface. - View Dependent Claims (13, 14, 15, 16)
-
Specification