Range taking shear bolts and drive tools
Range taking shear bolts and bolt installation (drive) tools are described herein, which are configured for use with a variety of range taking connectors and conductors.
1. A range taking shear bolt, comprising:
a hollow cylindrical body comprising a wall having an outer surface and an inner surface;
a distal end constructed and arranged to abut a cable conductor; and
a proximal end constructed and arranged to accept a drive tool, the outer surface having a substantially continuous screw thread thereon, and the inner surface having a plurality of spline teeth thereon, running longitudinally along a length thereof, wherein
the wall is configured to shear within a predetermined shear zone when an applied torque reaches or exceeds a predetermined torque value, and
the inner surface of the cylindrical body further comprises a hexagonal impression proximate the distal end.
2. The range taking shear bolt of claim 1 , wherein the predetermined torque value is a function of a thickness of the wall between the screw thread and the spline teeth.
3. The range taking shear bolt of claim 1 , wherein the bolt is formed from a metal or alloy.
4. The range taking shear bolt of claim 1 , wherein the spline teeth on the inner surface of the cylindrical body run longitudinally from the proximal end to the hexagonal impression.
5. The range taking shear bolt of claim 1 , wherein the spline teeth on the inner surface of the cylindrical body are symmetrical.
6. The range taking shear bolt of claim 1 , wherein the spline teeth on the inner surface of the cylindrical body are asymmetrical.
7. A drive tool for a range taking shear bolt, comprising:
an inner portion comprising a proximal head portion, a stem portion, a spline drive portion, and a distal end portion; and
an outer portion comprising a tubular body, the distal end portion, the spline drive portion, and at least a portion of the stem portion configured to fit inside a hollow cylindrical body of the range taking shear bolt, the spline drive portion having a plurality of spline teeth running longitudinally on an outer surface thereof, the spline teeth on the outer surface of the spline drive portion constructed and arranged to mate with spline teeth on an inner surface of the cylindrical body of the shear bolt, and the tubular body configured to fit over the cylindrical body of the shear bolt, forming an external sleeve to control a depth of tool insertion,
wherein the inner portion and the outer portion are formed as one piece.
8. The drive tool of claim 7 , wherein the head portion comprises a hexagonal head.
9. The drive tool of claim 7 , wherein the distal end portion has no spline teeth thereon.
10. A range taking shear bolt kit, comprising:
a range taking shear bolt having a cylindrical body with a distal end and a proximal end, the cylindrical body including a wall with an outer surface and an inner surface, the inner surface defining a hollow region, the distal end constructed and arranged to abut a cable conductor, the outer surface having a substantially continuous screw thread thereon, the inner surface having a non-round shape defining a plurality of corners, the wall is configured to shear within a predetermined shear zone in response to an applied torque reaching or exceeding a predetermined torque value; and
a drive tool comprising an inner portion and an outer portion, the inner portion and outer portion being separate pieces, and wherein
the inner portion comprises a proximal head portion, a drive portion, and a distal end portion, the distal end portion and the drive portion configured to fit within the hollow region of the range taking shear bolt, the drive portion having a non-round shape that is constructed and arranged to non-rotationally mate with the inner surface of the cylindrical body of the range taking shear bolt, and
the outer portion comprises a tubular body configured to fit over the outer surface of the cylindrical body of the range taking shear bolt, the outer surface forming an external sleeve to control a depth of tool insertion, the outer portion includes an inwardly facing flange configured to abut a lower surface of the proximal head portion of the inner portion of the drive tool.
11. The range taking shear bolt kit of claim 10 , wherein the proximal head portion comprises a hexagonal head.