PRIMER ASSEMBLY HAVING A DELAY CAP/SENSOR ELEMENT HERMETICALLY SEALED IN A SHELL UNIT

摘要

AbstractPrimer AssemblyA cast or pressed explosive primer is provided whichis adapted for slidable initiating engagement with a deto-nating cord. The primer comprises two hermetically sealedshells or cups which are connected together. One shell con-tains a sensor/signal carrier/delay cap combination and thesecond shell contains the explosive primer charge. Guidesare provided on the outside of the shells for the threadingtherethrough of a detonating cord, The construction providesprotection against the ingress of water or other liquidswhich may desensitize the initiation system,