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:
Feb. 02, 1988
Filed:
Apr. 08, 1987
Syuichi Takayama, Tokyo, JP;
Kowji Tanikawa, Tokyo, JP;
Ryouji Masubuchi, Tokyo, JP;
Kunio Kinoshita, Tokyo, JP;
Minoru Shinozuka, Tokyo, JP;
Kenichirou Sanagi, Tokyo, JP;
Naoki Uchiyama, Tokyo, JP;
Yoshio Shishido, Sagamihara, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A stone disintegrator apparatus has a probe with discharge electrodes and a power supply circuit for supplying a discharge voltage to the probe for causing discharge between the discharge electrodes. An electrode life detection circuit detects the number of use or discharge operations of the probe so as to determine the remaining life of the discharge electrodes. A discharge inhibit circuit inhibits re-use or discharge of the probe when the life detection circuit detects an end of electrode life.