Stone working – Sawing – Endless
Reexamination Certificate
2006-08-01
2006-08-01
Nguyen, Dung Van (Department: 3723)
Stone working
Sawing
Endless
C125S016020
Reexamination Certificate
active
07082940
ABSTRACT:
A wire sawing apparatus includes a wire, a wire feed roller, and two basic rollers. The three rollers have the same diameter and are arranged in such a manner that their axes of rotation are in parallel with one another. Cutting-positioning circumferential grooves are formed on the two basic rollers at axially paired same positions. Intermediate circumferential grooves are formed on the wire feed roller and arranged in the axial direction such that the axial position of each intermediate circumferential groove corresponds to an axially central position between two adjacent pairs of cutting-positioning circumferential grooves. The wire is spirally wound a plurality of turns on the three rollers while being fitted into the circumferential grooves.
REFERENCES:
patent: 5628301 (1997-05-01), Katamachi
patent: 5715807 (1998-02-01), Toyama et al.
patent: 5907988 (1999-06-01), Kiuchi et al.
patent: 6109253 (2000-08-01), Ikehara
patent: 6408839 (2002-06-01), Hauser
patent: 6568384 (2003-05-01), Onizaki
Kitamura Kazumasa
Takeuchi Yukihisa
Tsuji Hiroyuki
Watanabe Masashi
Burr & Brown
NGK Insulators Ltd.
Nguyen Dung Van
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