Abrading – Precision device or process - or with condition responsive... – With feeding of tool or work holder
Reexamination Certificate
2008-04-01
2008-04-01
Nguyen, Dung Van (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
With feeding of tool or work holder
C451S065000, C451S121000
Reexamination Certificate
active
07351130
ABSTRACT:
A sanding or polishing or grinding machine includes one or more sanding wheels supported on a machine base and movable up and down relative to the machine base for grinding the work pieces of different heights or thicknesses. A driving device may be used for driving the sanding wheels to move horizontally relative to the machine base for allowing the work pieces to be suitably sanded or ground by the sanding wheels. The sanding wheels are preferably disposed at different angular position relative to the machine base, for suitably sanding or grinding the work pieces in different angular positions.
REFERENCES:
patent: 82780 (1868-10-01), Wooster
patent: 5361544 (1994-11-01), Yang
patent: 5733180 (1998-03-01), Kilde
patent: 5921848 (1999-07-01), Zang et al.
patent: 6086461 (2000-07-01), Williams et al.
patent: 6146254 (2000-11-01), Wang
Baxley Charles E.
Nguyen Dung Van
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