Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Multi-directional signal transmission in a blast initiation system










Image Number 3 for United States Patent #4821645.

The invention provides a connector, a transmitter, a bi-directional device, and a method for increasing the reliability of borehole detonation by using the connectors and transmitters provided by the invention. The invention provides connectors, each connector having a well for receiving a blasting cap, one or more ports or channels for receiving a transmission line and/or downline, and means for joining one connector with another connector in a convenient manner. The connectors are constructed so that detonation of a blasting cap in one connector will cause sympathetic detonation of a blasting cap in an adjoining connector. The detonation of blasting caps in the connectors also causes initiation of transmission lines and/or downlines which are inserted in the ports or channels through the connectors. A transmitter is comprised of one or more of these connectors with the transmission lines being arranged so that the transmitter receives a signal from one line and outputs it to at least one other transmission line or downline. A bi-directional device is provided that consists of a transmission line with blasting caps attached to each end and the caps are inserted into the wells of connectors as described below. The method of the present invention includes the use of the transmitters and arranging them such that there are at least two signal paths from which a transmitter may receive an initiation signal.








 
 
  Recently Added Patents
Systems and methods for sensing external magnetic fields in implantable medical devices
Aware manufacturing of integrated circuits
Process for producing a plasma protein-containing medicament with reduced concentration of citrate and metals
Inhibitors of human immunodeficiency virus replication
Optical cable plug-in detection
Method and system for determining an optimal missile intercept approach direction for correct remote sensor-to-seeker handover
Manufactured product configuration
  Randomly Featured Patents
Composite heddle rod
Continuous polymerization method and apparatus
Apparatus for crushing solids in a liquid medium
Polishing apparatus and method
Switching circuit
Carton for film cassettes
Magnetic-resonance imaging apparatus
Antibodies that define unique Meningococcal B epitopes and vaccine compositions
Foam nozzle
Mobile telephone-vehicle meter device interface