SIGNAL TRANSMISSION SYSTEM IN NORMALLY-CLOSED CUT PROPULSION MACHINE

PROBLEM TO BE SOLVED: To provide a signal transmission system of a normally-closed cut propulsion machine capable of transmitting a signal from an electronic circuit incorporated in a drill head through a relatively simple arrangement. SOLUTION: The signal transmission system in a normally-closed cu...

Full description

Saved in:
Bibliographic Details
Main Authors NAKAUCHI HIROMASA, ARAI IKUO
Format Patent
LanguageEnglish
Published 07.11.2003
Edition7
Subjects
EARTH DRILLING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SELECTING
SHAFTS
TUNNELS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a signal transmission system of a normally-closed cut propulsion machine capable of transmitting a signal from an electronic circuit incorporated in a drill head through a relatively simple arrangement. SOLUTION: The signal transmission system in a normally-closed cut propulsion machine comprises a propeller 6 including a drill head 10, an electronic circuit unit 50 incorporated in the drill head 10, and a signal processor for processing a signal from the electronic circuit unit 50 as required. The drill head 10 incorporates a communication circuit, and a transmission/reception antenna 42 is fixed to the outside of the propeller 6. The communication circuit is connected with the transmission/reception antenna 42 through a communication cable 74, and a communication signal from the communication circuit is transmitted through the transmission/reception antenna 42 and the propeller 6 thence transmitted through a receiving means for transmission to a signal processing means. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020126856