Barrier head bolt for use with disconnectable joints and methods of using the same
View Patent ↗A barrier head bolt for use in power feeder applications including a main bolt portion and an extended torque head portion, the torque head portion designed and constructed to shear off the main body of the bolt at a predetermined torque, and which projects above the main body portion a sufficient distance so as to inhibit or prevent the application of a joint sleeve without first shearing off the extended torque head portion of the bolt, thus ensuring that the joint is properly tightened.
1. A method for connecting a cable to a disconnectable electrical joint wherein the connection is covered by a sleeve, said method comprising:
positioning a sleeve over a cable;
providing a barrier head bolt comprising a torque head portion and a main bolt portion, wherein the torque head portion extends from the main bolt portion a sufficient distance such that the sleeve cannot be properly positioned while the torque head portion is attached to the main bolt portion;
joining the cable to a disconnectable joint via the main bolt portion of the barrier head bolt;
tightening the torque head portion to a predetermined tightness such that at least a portion of the torque head portion detaches from the barrier head bolt; and
positioning the sleeve over the connection between the cable and the joint.
2. The method according to claim 1 , wherein the torque head portion is tightened to about 50 to 60 foot-pounds.
3. The method according to claim 2 , wherein the torque head portion is tightened via a non-torque wrench tool.
4. The method according to claim 1 , wherein the torque head portion comprises an extended head portion and a stem portion and wherein the method further comprises positioning a barrier member between the torque head portion and the main bolt portion, wherein the barrier member inhibits a tool from engaging the main bolt portion.
5. The method according to claim 1 , wherein the torque head portion comprises a head portion and a stem portion and where the stem portion further comprises an undercut to facilitate detachment of the extended head portion from the main bolt portion.
6. A barrier head bolt for connecting a cable to a disconnectable joint, and wherein the connection is to be covered by a sleeve, the barrier head bolt comprising:
a torque head portion and a main bolt portion, wherein the torque head portion comprises an extended head portion and a stem portion and wherein the main bolt portion is designed to connect a cable to a disconnectable joint;
at least a portion of the torque head portion extending from the main bolt portion a sufficient distance so as to inhibit the placement of a sleeve on the connection between the cable and the disconnectable joint; and
the extended head portion being designed to detach from the main bolt portion at a predetermined torque, such that the sleeve can be properly positioned on the joint.
7. The barrier bolt according to claim 6 , wherein the extended head portion is designed to detach at about between 50 to 60 foot-pounds.
8. The barrier bolt according to claim 6 , wherein the stem portion comprises an undercut.
9. The barrier bolt according to claim 6 , further comprising a barrier member positioned proximate the stem portion.
10. The barrier bolt according to claim 9 , wherein barrier member is formed integral with the stem potion.
11. The barrier bolt according to claim 6 , wherein the disconnectable joint is an I, Y or H joint.
12. The barrier bolt according to claim 6 , wherein the torque head portion and the main bolt portion are formed as separate pieces.
13. The barrier bolt according to claim 6 , wherein the extended head portion and the stem portion are formed as separate pieces.