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
High power insulated gate bipolar transistors
Light-emitting element, light-emitting device, and electronic device
Method and system for advertisement using internet browser to insert advertisements
Method and apparatus for controlling power supply
Thermoplastic fluoropolymer composition
Computer-implemented method of constructing a stock index using index rotation
Radio link monitoring (RLM) and reference signal received power (RSRP) measurement for heterogeneous networks
  Randomly Featured Patents
Method of laser machining contact lenses
Tension locking tool
Process for preparing alkylene oxides
Storage device for sheets of sandpaper
Hardshell cover
Method and apparatus for navigation system using routing data created by remote navigation server
Laser head for irradiation and removal of material from a surface of a structure
Portable data carrier, external arrangement, system and methods for wireless data transfer
Trace locator for a multi-trace recorder
Process for the production of hydrogen peroxide