Seismic tool assembly for use in anchor insertion

Abstract

A seismic tool assembly for effecting a drill hole and enlarging a lowermost end thereof whereby an anchor can be set more securely therein. A drill bit is inserted through an opening in a cap portion, which is mounted on a stabilizer mounted within at least a portion of the drill hole. The bit is then inserted through each of the cap portion and the stabilizer to attain a drilling position. The bit possesses extra cutting tips on an upper end thereof, with a view to widening the upper end of a drill hole so that a wider flange can be inserted therein, so as to further stabilize and support the stabilizer when limited tilting movement of the bit within the stabilizer is performed during the drilling process.

1 . A seismic tool assembly for effecting a drill hole and enlarging a lowermost end thereof for a later insertion and setting of anchors therein, the assembly comprising:
 a substantially cylindrical bit body sized to fit into the drill hole, the bit body having a first end region constructed and arranged to be operatively connected to a drill and a second end region disposed generally opposite said first end region, wherein a quad cutting portion is positioned to protrude from the second end region and an upper cutting portion positioned on a substantially middle portion thereof, the quad cutting portion and the upper cutting portion each having an operational cutting radius greater than a cutting radius of the bit body;   a stabilizer for mounting within at least a portion of the drill hole and having a recessed interior portion, the stabilizer further comprising:
 (a) a flange portion constructed and arranged to extend into the drill hole and abut an inside portion thereof; 
 (b) a central opening, the central opening providing a space between the bit body and the flange portion to permit limited tilting movement of the bit body during a drilling process to enlarge the lowermost end of the drill hole; 
   (c) a support portion integrally mounted on the flange portion;   (d) an upper portion integrally mounted on the support portion, the support portion having an outermost diameter greater than that of the upper portion; and   a cap portion having an opening defined therethrough corresponding with the stabilizer and for receiving an insertion of the bit body therethrough, the cap portion being constructed and arranged to cover and be positioned to surround the upper portion of the stabilizer.   
     
     
         2 . The assembly as claimed in  claim 1 , wherein the quad cutting portion extends outwardly from substantially around an entirety of the second end region. 
     
     
         3 . The assembly of  claim 1 , wherein the flange portion is tapered at a distal end thereof. 
     
     
         4 . The assembly as claimed in  claim 1 , wherein the drill bit is constructed and arranged for attachment to a power drill. 
     
     
         5 . The assembly of  claim 1 , wherein the opening in the stabilizer is positioned at a substantially central location of the stabilizer. 
     
     
         6 . The assembly of  claim 1 , wherein the bit body further comprises an abutment member formed thereon having a greater width than a remainder of the bit body. 
     
     
         7 . The assembly of  claim 1 , wherein an outermost end of the support portion further comprises a recessed portion on a bottom surface thereof, the recessed portion being constructed and arranged to provide a gap between the support portion and a surface to be drilled. 
     
     
         8 . The assembly of  claim 1 , wherein the stabilizer further comprises a recessed shoulder portion on an interior thereof which is constructed and arranged to contact the abutment member when the bit body is inserted therethrough, thus restricting downward movement of the bit body to a pre-set depth. 
     
     
         9 . The assembly of  claim 1 , wherein the assembly further comprises locking means positioned substantially around the cap portion for selectively stabilizing the bit body and for preventing disassembly of the bit body from the cap portion and the stabilizer, wherein the locking means are spring loaded and further comprise a pair of engagement members positioned on each side of the cap portion whereby, when depressed simultaneously, the pair of engagement members are movable to permit placement of the cap portion on the stabilizer and, once depression of the locking means ceases, the pair of engagement members engage an outer surface of the upper portion of the stabilizer, restricting disengagement of the cap portion from the upper portion of the stabilizer. 
     
     
         10 . A seismic tool assembly for effecting a drill hole and enlarging a lowermost end thereof for a later insertion and setting of anchors therein, the assembly comprising:
 a substantially cylindrical bit body sized to fit into the drill hole, the bit body having a first end region constructed and arranged to be operatively connected to a drill and a second end region disposed generally opposite said first end region, wherein a quad cutting portion is positioned to protrude from the second end region and an upper cutting portion positioned on a substantially middle portion thereof, the quad cutting portion and the upper cutting portion each having an operational cutting radius greater than a cutting radius of the bit body, and wherein the bit body further comprises an abutment member formed thereon having a greater width than a remainder of the bit body;   a stabilizer for mounting within at least a portion of the drill hole and having a recessed interior portion, the stabilizer further comprising:   (a) a flange portion constructed and arranged to extend into the drill hole and abut an inside portion thereof;
 (b) a central opening, the central opening providing a space between the bit body and the flange portion to permit limited tilting movement of the bit body during a drilling process to enlarge the lowermost end of the drill hole; 
   (c) a support portion integrally mounted on the flange portion, an outermost end of the support portion further comprising a recessed portion on a bottom surface thereof, the recessed portion being constructed and arranged to provide a gap between the support portion and a surface to be drilled;   (d) an upper portion integrally mounted on the support portion, the support portion having an outermost diameter greater than that of the upper portion; and   (e) a recessed shoulder portion on an interior thereof which is constructed and arranged to contact the abutment member when the bit body is inserted therethrough, thus restricting downward movement of the bit body to a pre-set depth, and wherein the recessed shoulder portion permits a tilted controlled rotation of the bit body within the stabilizer;   a cap portion having an opening defined therethrough corresponding with the stabilizer and for receiving an insertion of the bit body therethrough, the cap portion being constructed and arranged to cover and be positioned to surround the upper portion of the stabilizer;
 locking means positioned substantially around the cap portion for selectively stabilizing the bit body and for preventing disassembly of the bit body from the cap portion and the stabilizer, wherein the locking means are spring loaded and further comprise a pair of engagement members positioned on each side of the cap portion whereby, when depressed simultaneously, the pair of engagement members are movable to permit placement of the cap portion on the stabilizer and, once depression of the locking means ceases, the pair of engagement members engage an outer surface of the upper portion of the stabilizer, restricting disengagement of the cap portion from the upper portion of the stabilizer. 
   
     
     
         11 . The assembly of  claim 10 , wherein the bit body has a non-fluted body.