Patent ID: 7245473

Claim:
A switchable lightning-arrester system comprising: a lightning arrester having a base end, a power-line end and a link bolt positioned internally from arrester fins of the lightning arrester; the link bolt having a ground end proximate the base end and a terminal end proximate the power-line end; an arrester-attachment base for receiving the base end of the lightning arrester predeterminedly for attaching the lightning arrester to a power-line support; a safety-switchable connector proximate the power-line end of the link bolt for open and closed switching of electrical communication from a power line to the link bolt; the safety-switchable connector including a counter-lever safety switch having a switch platform to which the terminal end of the link bolt is attached; a ground-line connector proximate the ground end of the link bolt for connecting a ground line to the line bolt; a fulcrum pillar extending vertically upward from a pillar end of the switch platform; a line-support arm attached pivotally to a support-arm axle proximate a top of the fulcrum pillar; the line-support arm being extended from proximate a support-lever axle to a switch-rod end; a power-line clamp on the switch-rod end is positioned vertically above the link bolt in a closed mode of a counter-lever connector; a switch rod extending downward vertically from the line-support arm for contacting the terminal end of the link bolt in a closed mode of the counter-lever connector; a support-arm axle positioned horizontally on the fulcrum pillar at a control-fulcrum distance upwardly from the switch platform; a control lever having a control-lever handle attached pivotally to the fulcrum pillar with a control-lever axle; a control-link rod having a first link-rod end attached pivotally to the line-support arm with a first link axle; the control-link rod has a second link-rod end attached pivotally to the control lever with a second link axle; the control-link rod is articulated and positioned intermediate the line-support arm and the control lever for transmitting downwardly locking force on the line-support arm from downward travel of the control lever and for transmitting upwardly unlocking force on the line-support arm from upward travel of the control lever as transmitted to the control-lever handle selectively; and the control-link rod transmits a lock-shut mode of the counter-lever safety switch with the switch being in contact with the terminal end of link bolt by positioning of the first link axle, the second link axle and the control-lever axle in a straight line for transmitting lightning power to the ground line for a use mode of the lightning arrester.