The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2001
Filed:
Feb. 07, 2000
Hiroaki Arai, Osaka, JP;
Hidehiko Maehata, Suita, JP;
Hitachi Zosen Corporation, , JP;
Abstract
A discharge breaking system and a discharge breaking method for breakage and decomposition of objects to be ruptured such as destruction of base rocks and breakage of stones into small pieces at building lands, breakage for finishing tunnels and destruction of concrete buildings. A discharge breaking system is configured to supply or discharge electric energy charged or accumulated in a capacitor between a pair of electrodes in a short time for abrupt vaporization of a breaking substance for transmitting a pressure, thereby breaking an object to be ruptured with an expansion force generated by the vaporization. The discharge breaking systems has a structure wherein an end portion of a sheath member which covers a pair of metal cores for composing a cable is cut off to expose ends of the metal cores, and the exposed ends of the metal cores are submerged in the breaking substance and used as electrodes. The cable can be a coaxial cable having an inner core and an outer core, the cable being cut off to expose an end of the inner cable having one or more notches to cause the exposed end of the inner core to function as the foregoing thin metal wire. This discharge breaking system requires no adjustment of a distance between the electrodes and can easily be manufactured.