Title:
AIR TURBINE DRIVE SPINDLE
Document Type and Number:
WIPO Patent Application WO/2018/047775
Kind Code:
A1
Abstract:
An air turbine drive spindle (100) comprises: a rotation shaft (1); a housing assembly (2); a casing part; and a plurality of O-rings (21, 26). The rotation shaft (1) comprises: a thrust plate (1B) extending in the radial direction; a shaft part (1A) extending in the thrust direction which intersects the radial direction. The plurality of O-rings (21, 26) include at least one first O-ring (21) that is disposed between the housing assembly (2) and the casing part in the radial direction and that contacts both the housing assembly (2) and the casing part, and at least one second O-ring (26) that is disposed between the housing assembly (2) and the casing part in the thrust direction and contacts both the housing assembly (2) and the casing part. The air turbine drive spindle further comprises: a radial bearing (8) disposed between the shaft part (1A) and the housing assembly (2); and a thrust bearing (9) disposed between the thrust plate (1B) and the housing assembly (2).
Inventors:
HORIUCHI TERUYOSHI (JP)
OWADA TOMOYUKI (JP)
OWADA TOMOYUKI (JP)
Application Number:
PCT/JP2017/031822
Publication Date:
March 15, 2018
Filing Date:
September 04, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C32/06; F16C27/06; F16F15/08
Foreign References:
| JPS5392595A | 1978-08-14 | |||
| CN103244559A | 2013-08-14 | |||
| JP2000060870A | 2000-02-29 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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