Spark proof booster cable system

A spark proof battery booster pack comprising:

• a) a housing, forming a recess capable of receiving a battery;
• b) two clamps having opposing jaws of a power jaw and a signal jaw whereby the power jaw delivers power current and the signal jaw detects an independent polarity signal;
• c) a pair of power cables connecting each power jaw of the said two clamps to the control box;
• d) a pair of signal wires connecting each signal jaw of the said four clamps to the control box whereby the combination of a power cable and a signal cable at a jaw pair constitutes a booster cable;
• e) a set of light emitting diodes connected to optic couplers oriented by an electronic control circuit means, that notify the user of connection status;
• l) a solenoid assembly controlling the path of power current which is biased into open and closed position by induction generated by the electronic control circuit means;
• m) a first electronic control circuit means to show that connections between a battery in the housing and an outside battery to be charged have been correctly made;
• n) a first electronic control circuit means to show that connections between a battery in the housing and an outside battery to be charged have been incorrectly made;
• o) a third electronic control circuit means to cause power current to flow through said solenoid assembly if and only if the battery source in the housing has been correctly connected to the outside battery by the clamp and booster cables;
• p) a fourth electronic control circuit means to terminate power current flow through said solenoid assembly upon discontinuation of a connection between the clamps and a battery being boosted.

A magnetically controlled switching device comprising:

• a) a plurality of polarity sensitive alligator clamps having clamp jaws;
• b) a means for providing a path of electric current through one of the clamp jaws;
• c) a means for detection of polarity signals through the opposite clamp jaw;
• d) a solenoid inductive coil placed inside a housing;
• e) a moving plunger inserted inside the annular center of the solenoid coil;
• f) two conductive posts, insulated from each other, placed outside the solenoid housing;
• g) a conductive contact plate, placed outside the said solenoid housing but attached to the end of the said moving plunger;
• h) a spring, inserted through the body of the plunger and positioned between the contact plate and the solenoid housing;
• i) a set of power cables connected between battery source and the said conductive posts;
• j) a means for reading and comparing polarity at connections between this subject switch device to two battery sources;
• k) a first responsive means to cause the said solenoid coil to be electrically charged when it reads that the said polarity signals are of the same polarity;
• l) a second responsive means for sending out a warning signal when it reads the said signals are of the opposite polarities;
• m) a third responsive means for terminating the charge of the said solenoid coil when it reads that the polarity signal is no longer present;
• n) a fourth responsive means to engage contacts between the said contact plate and the said posts when the said solenoid coil is charged;
• o) a fifth responsive means to disengage contacts between the said contact plate and the said posts when the said solenoid coil is not charged.