Hermetically sealed detonator

Claim 1

AN ELECTRICALLY IGNITABLE EXPLOSIVE CARTRIDGE COMPRISING A HOLLOW METAL BODY, SAID BODY HAVING ONE END CLOSED, A CERAMIC INSULATOR MOUNTED WITHIN SAID BODY, SAID INSULATOR HAVING AN OUTER PERIPHERAL SURFACE WHICH IS METALLIZED, SAID METALLIZED SURFACE BEING UNITED BY SOLDER TO SAID BODY, SAID INSULATOR HAVING A PORTION OF REDUCED CROSS-SECTIONAL AREA TERMINATING IN A METALLIZED END SURFACE WHICH FACES SAID BODY, SAID INSULATOR ALSO HAVING A METALLIZED ANNULAR SURFACE AT THE STEP WHERE THE PORTION OF REDUCED CROSS-SECTIONAL AREA ABUTS THE REMAINDER OF THE INSULATOR, AN ELECTRICAL IGNITING WINDING, SAID WINDING BEING WOUND ON SAID PORTION OF REDUCED CROSS-SECTIONAL AREA, EXPLOSIVE POWER, SAID POWER SURROUNDING SAID IGNITING WINDING, SAID INSULATOR HAVING FIRST AND SECOND HOLES EXTENDING THROUGH SAID INSULATOR, SAID FIRST HOLE TERMINATING AT SAID METALLIZED ANNULAR SURFACE AND SAID SECOND HOLE TERMINATING AT SAID METALLIZED END SURFACE, FIRST AND SECOND LEAD WIRES EXTENDING THROUGH SAID FIRST AND SECOND HOLES RESPECTIVELY, SAID WINDING HAVING TWO ENDS, SOLDER ADHERING TO SAID METALLIZED ANNULAR SURFACE AND ELECTRICALLY CONNECTING ONE WINDING END TO SAID FIRST LEAD WIRE, SAID SOLDER EXTENDING ACROSS THE FIRST HOLE TO FORM A SEAL, AND FURTHER SOLDER ADHERING TO SAID METALLIZED END SURFACE AND ELECTRICALLY CONNECTING THE OTHER END OF THE WINDING TO SAID SECOND LEAD WIRE, SAID FURTHER SOLDER EXTENDING ACROSS THE SECOND HOLE TO FORM A SEAL.