Grinding water tank unit for eyeglass lens processing and...

Abrading – Machine – Rotary tool

Reexamination Certificate

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Details

C451S444000, C451S450000, C451S453000, C210S349000, C210S353000, C210S188000

Reexamination Certificate

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06974369

ABSTRACT:
An eyeglass lens processing apparatus for processing an eyeglass lens includes: a processing chamber inside which a lens grinding tool is disposed; a tank which stores grinding water; a drain hose connecting the processing chamber with the tank; a filter for eliminating bubbles attached to an outlet of the drain hose, which includes a large number of pores having a size such that permits passing of processing debris stemming from rough processing and inhibits passing of bubbles larger than the processing debris.

REFERENCES:
patent: 3651607 (1972-03-01), Lee, II
patent: 4084944 (1978-04-01), Chirico
patent: RE35898 (1998-09-01), Shibata et al.
patent: 6106728 (2000-08-01), Iida et al.
patent: 6461524 (2002-10-01), Tsuihiji et al.
patent: 6672948 (2004-01-01), Mizuno
patent: 2002/0132568 (2002-09-01), Mizuno
patent: 2003/0017791 (2003-01-01), Mizuno
patent: 42 35 767 (1994-09-01), None
patent: 44 26 419 (1996-04-01), None
patent: 5-212661 (1993-08-01), None
patent: 2514215 (1996-07-01), None
patent: 11-320408 (1999-11-01), None
patent: 02000288934 (2000-10-01), None
Japanese Abstract No. 2002224957, dated Aug. 13, 2002.
Japanese Abstract No. 11320408, dated Nov. 24, 1999.

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