| US 7,165,302 C1 (6668th) | ||
| SPINDLE DEVICE OF MACHINE TOOL AND METHOD OF REPLACING SPINDLE | ||
| Yasuhiko Kikkawa, Minamitsuru-gun, Japan, and Akihiro Mochizuki, Minamitsuru-gun, Japan, assignors to Makino Milling Machines Co., Ltd., Meguro-Ku, Tokyo, Japan | ||
| Reexamination Request No. 90/008,705, Jun. 14, 2007. | ||
| Reexamination Certificate for Patent 7,165,302, issued Jan. 23, 2007, Appl. No. 470,089, Jul. 23, 2003. | ||
| PCT No. PCT/JP02/08889, § 371 Date Jul. 23, 2003, PCT Pub. No. WO03/04562, PCT Pub. Date Jun. 5, 2003 | ||
| Claims priority, application Japan, Dec. 26, 2001, 2001-360027 | ||
| Int. Cl. B23B 19/02 (2006.01) | ||
| U.S. Cl. 29—426.1 |
| AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT: |
| Claims 1, 2 and 3 are determined to be patentable as amended. |
| Claims 4-6 and 7 were not reexamined. |
| 1. A spindle device of a machine tool with a spindle which is rotationally supported by a housing, comprising: a spindle;
a housing for enclosing a least a part of the spindle, the housing including a front housing and a rear housing which is detachably coupled to the front housing;
a front bearing part, incorporated in the front housing, for rotationally supporting the front part of the spindle;
a bearing case accommodating a rear bearing part, including an inner race and an outer race, incorporated in the rear housing by fitting the bearing case into the rear housing, for rotationally supporting the rear part of the spindle; and
the front bearing part, the spindle and
the bearing case accommodating the rear bearing part including the inner race and the outer race being removed as a whole from the rear housing along with the front housing when the front housing is removed from the rear housing.
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