Abrading – Machine – Rotary tool
Reexamination Certificate
2007-08-07
2007-08-07
Nguyen, Dung Van (Department: 3723)
Abrading
Machine
Rotary tool
C451S384000, C451S435000, C451S461000
Reexamination Certificate
active
11309513
ABSTRACT:
An apparatus for cylindrically grinding workpieces includes a first holding tool (10) and a second holding tool (12). The first holding tool is configured for positioning pre-grinding workpieces (18). The first holding tool defines a first groove (103) for containing the pre-grinding workpieces. A first stopping board (106) is detachably connected to one side of the first holding tool, and a first pressing mechanism (107) is elastically connected to another side. The first pressing mechanism and the first stopping board cooperatively press the pre-grinding workpieces into the first groove. The second holding tool (12) is configured for positioning the partially ground workpieces. The second holding tool defines a second groove (123) for containing the partially ground workpieces. A second stopping board (126) is connected to one side of the second holding tool, and a second pressing mechanism (127) is elastically connected to another side.
REFERENCES:
patent: 1336928 (1920-04-01), Simmons
patent: 4445678 (1984-05-01), George
patent: 4583432 (1986-04-01), Bricker
patent: 5305557 (1994-04-01), Warncke
patent: 6554265 (2003-04-01), Andronica
patent: 7144306 (2006-12-01), Yen
Hon Hai Precision Industry Co. Ltd.
Knapp Jeffrey T.
Nguyen Dung Van
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