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:
Dec. 19, 2000
Filed:
Feb. 25, 1999
Noboru Katsumata, Yokosuka, JP;
Kensho Miyata, Yokosuka, JP;
Kazutomo Kinutani, Toyama-ken, JP;
Kensho Kuroda, Yokosuka, JP;
Toyotaka Wada, Yokosuka, JP;
Akihiro Nakayama, Yokosuka, JP;
Katsumasa Takahashi, Yokosuka, JP;
Takaharu Nishida, Osaka, JP;
Shouichi Uemura, Ohtsu, JP;
Tetsuo Kodama, Ohtsu, JP;
Nippei Toyoma Corp., , US;
Toyobo Co., Ltd., , JP;
Abstract
A managing system for managing slurry, which is supplied to a wire saw. Slurry is prepared in a preparing tank and sent to the wire saw and used to cut workpieces. After usage for cutting workpieces, the slurry is sent to a separating apparatus from the wire saw. The separating apparatus separates impurities from the used slurry to recover a mixture of recyclable dispersing liquid and abrasive grains from the used slurry. The recovered mixture is returned to the preparing tank. The recovered mixture is mixed with fresh abrasive grains and dispersing liquid in the preparing tank to prepare slurry. The property (specific gravity and viscosity) of the slurry in the preparing tank is detected. The amount of fresh abrasive grains and dispersing liquid supplied to the preparing tank is adjusted in accordance with the detection results. Accordingly, slurry having properties that are optimal for the cutting of workpieces is prepared.