Resources Contact Us Home
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
Controller for flexible and extensible flow processing in software-defined networks
Thiocyanato or isothiocyanato substituted naphthalene diimide and rylene diimide compounds and their use as n-type semiconductors
Systems and methods for a signed magnitude adder in one's complement logic
Authorization method for location based services
Sensor interface engineering
Verification of computer-executable code generated from a model
  Randomly Featured Patents
Paint drip catcher
System and method for providing controlled illumination during detected hazardous conditions
Method of processing a light-sensitive silver halide material
Dynamic vehicle grid infrastructure to allow vehicles to sense and respond to traffic conditions
Electrically isolated sterilizable endoscopic video camera head
Sheet supplying apparatus
Photoconductive image receiving member with optimized light response characteristics
Unibody bumper system
Nitrogen-emitting composition to be used with flash getter materials
Clock generator intermittently generating synchronous clock