Patent ID: 6889591
Filing Date: 2005-05-10
Classification: A22B,A62B,B25D,Y10T

Abstract:
1. A firing system for an impact generating apparatus including a housing defining an interior chamber with a front portion and a rear portion, the firing system comprising: a striker assembly having a first end and a second end and movably disposed within the front portion of the housing, the striker assembly comprising, a driver assembly having a first end and a second end and containing a propellant charge, the driver assembly disposed within the rear portion of the housing so that the first end of the driver assembly is adjacent the inner portion of the striker head; means responsive to an electrical charge for igniting the propellant, the propellant igniting means disposed on the first end of the driver assembly; an electrical power supply associated with the housing; and a firing circuit comprising, wherein when a target object is forcibly engaged with the striker shaft tip so as to move the striker shaft inwardly of the housing, the outer portion of the striker head is moved toward the rear portion of the housing relative to the inner portion of the striker head to the second position so that the one of the positive contact or negative contact of the contact member extends from the inner portion of the striker head to engage the propellant igniting means for completing an electrical firing circuit to enable firing of the device by electrical power supplied through the firing circuit to the propellant igniting means, and wherein a spring is disposed around the striker shaft and is adapted to be positioned between the front portion of the housing and the outer portion of the striker head for biasing the striker head towards the rear portion of the housing, the sizes of the spring disposed around the striker shaft and the spring that is interposed between the inner and outer portions of the striker head being such that the spring that is interposed between the inner and outer portions of the striker head can bias the inner and outer portions of the striker head to the spaced first position.