| 摘要 |
1. An assembly for producing a pair of pressure pulse sequences which comprises two arrays each having A. A PLURALITY OF EXPLOSIVE ELEMENTS ARRANGED IN A STRAIGHT LINE, SAID EXPLOSIVE ELEMENTS BEING EQUALLY SPACED FROM EACH OTHER A DISTANCE AT LEAST SUFFICIENT TO PREVENT DETONATION FROM PROPAGATING BETWEEN SAID ELEMENTS BY INFLUENCE, B. DETONATION-TRANSMITTING MEANS CONNECTING THE SAID EXPLOSIVE ELEMENTS IN SEQUENCE AND BEING ADAPTED TO PROVIDE IDENTICAL TIME INTERVALS BETWEEN THE DETONATION OF SUCCESSIVE ELEMENTS, AND C. INITIATING MEANS IN INITIATING RELATIONSHIP WITH ONE TERMINAL EXPLOSIVE ELEMENT IN SAID STRAIGHT LINE, BOTH OF SAID ARRAYS HAVING THE SAME SPACING BETWEEN SAID EXPLOSIVE ELEMENTS AND ESSENTIALLY THE SAME NUMBER OF SAID EXPLOSIVE ELEMENTS, AND SAID DETONATION-TRANSMITTING MEANS PROVIDING THE SAME TIME INTERVAL BETWEEN THE DETONATION OF SUCCESSIVE ELEMENTS IN BOTH OF SAID ARRAYS, SAID ARRAYS BEING SO DISPOSED ONE TO THE OTHER 1. THAT THE STRAIGHT LINE FORMED BY THE FIRST ARRAY IS PARALLEL TO A LINE PARALLEL TO THE STRAIGHT LINE FORMED BY THE SECOND ARRAY AND THAT THE LINE FORMED BY THE FIRST ARRAY AND THE LINE FORMED BY THE SECOND ARRAY LIE ON OPPOSITE SIDES OF A PLANE PASSING BETWEEN THEM AND NORMAL TO THEM, AND 2. THAT SAID TERMINAL EXPLOSIVE ELEMENTS, ONE FROM EACH ARRAY, IN INITIATING RELATIONSHIP WITH SAID INITIATING MEANS ARE SUBSTANTIALLY EQUALLY SPACED FROM THE GEOMETRIC CENTER OF SAID ASSEMBLY.
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