Resources Contact Us Home
Delay detonator

Image Number 2 for United States Patent #4817530.

A nonelectric delay detonator has, in a casing, a secondary charge as well as a delay device. The delay detonator is initiated by an ignition transfer hose extending into the casing. A partition is arranged between a hose end and the delay device. Ignition of the delay device is effected by the hose by impact or heat. An auxiliary charge (e.g. a primer cap) is located on the other side of the partition, this auxiliary charge ignites a delay charge of the delay device. In this way, the delay device burns in a closed system from which gas and pressure cannot escape into the hose. Thereby the scattering width of the delay times of the detonator is reduced.

  Recently Added Patents
Pizza stone
Automatic pill dispenser
Wideband antenna
Method of targeting hydrophobic drugs to vascular lesions
Detecting the type of NAT firewall using messages
Method, apparatus, and system for synchronizing contents
Video reproducing apparatus and video reproducing method
  Randomly Featured Patents
Decorative acoustical building panel
Lattice pillow shape for snack food
Flame retardant polyketone polymer blend
High speed internet access
Method and apparatus for forming image having plural image forming stations
Water bottom cable seismic survey cable and system
Air inflatable bed-like device with adjustable back support
Modular, processor-controlled document distribution terminal
ATM switch and control method thereof
Method and apparatus for detecting component removal while operating in a battery backup mode