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
Method and system for placing an emergency call
Method for accessing wireless network
Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using
Display module
Process for producing .beta.-sialon fluorescent material
Method for encoding signal, and method for decoding signal
System, apparatus and method for enabling/disabling display data channel access to enable/disable high-bandwidth digital content protection
  Randomly Featured Patents
Soft ice cream production and dispensing device
Rose plant -- Meimatlor variety
Fluorescent lamp power supply
Paper thickness adjusting mechanism for impact printer
Affect-based robot communication methods and systems
Process for controlling diazotization reactions involving nitrous reactant by testing the air above the reaction batch for its content of nitrous gases and feeding nitrous reactant in accordan
Method for cancelling impulsive noise
Digital VTR increasing recorded amount of high priority data
Process for removing crud from ion exchange resin
Bone abrading ultrasonic horns