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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/043071
Kind Code:
Provided is an air turbine drive spindle configured so that an increase in pressure within a through-hole can be prevented. This spindle is provided with a rotating shaft (1) and an outer peripheral member (housing assembly (2), cover (5), and nozzle plate (6)). The rotating shaft (1) has a through-hole (17) formed therein. The outer peripheral member includes a bearing sleeve (4) surrounding at least a part of the outer peripheral surface of the rotating shaft (1). The outer peripheral member includes a gas supply section and a gas discharge hole (11). The spindle is provided with a second gas discharge section (first gas discharge hole (25) and first gas flow passage (26)). The second gas discharge section is independent of the gas discharge hole (11) and connects to the outside from a gas discharge space (20).

HORIUCHI, Teruyoshi (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
Application Number:
Publication Date:
March 08, 2018
Filing Date:
August 08, 2017
Export Citation:
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NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F01D15/06; F01D1/08; B05B3/10; B05B5/04; B23B19/02
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Central Tower, 2-7 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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