Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Turbo machine
Reexamination Certificate
2011-03-22
2011-03-22
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Turbo machine
C416S24400R
Reexamination Certificate
active
07909578
ABSTRACT:
A turbocharger as a turbo machine includes: a compressor impeller (13) having a projected portion (19) at a center of a rear surface; a drive shaft (15) connected to a bottomed coupling hole (20) provided in the projected portion (19) of the compressor impeller (13) through interference fit only; and a sleeve (30) with a cylindrical portion (33) connected to the outer peripheral portion of the projected portion (19) of the compressor impeller (13) by fitting only. The sleeve (30) is formed of a material whose coefficient of linear expansion is smaller than that of the compressor impeller (13). Accordingly, even when the coupling hole (20) in the projected portion (19) undergoes thermal expansion and the diameter of the coupling hole (20) increases, a connection between the drive shaft (15) and the coupling hole (20) can be prevented from being loosened since the radial increase thereof is suppressed by the cylindrical portion (33). Thus, the state of the connection thereof can be well maintained.
REFERENCES:
patent: 3961867 (1976-06-01), Woollenweber
patent: 4340317 (1982-07-01), Heitmann et al.
patent: 4986733 (1991-01-01), Fleury et al.
patent: 5176497 (1993-01-01), Deacon et al.
patent: 5193989 (1993-03-01), Fleury et al.
patent: 6116855 (2000-09-01), Maki
patent: 6896479 (2005-05-01), Svihla et al.
patent: 6948913 (2005-09-01), Heyes et al.
patent: 2004/0131469 (2004-07-01), Billington
patent: 2005/0036893 (2005-02-01), Decker
patent: 2005/0169764 (2005-08-01), Geoffrey Heyes et al.
patent: 1 394 387 (2004-03-01), None
patent: 2392477 (2004-03-01), None
patent: 50-30110 (1975-03-01), None
patent: 5-504178 (1993-07-01), None
patent: 2794338 (1998-06-01), None
patent: 2004-90130 (2004-03-01), None
patent: 2004-144095 (2004-05-01), None
patent: WO 91/06749 (1991-05-01), None
patent: WO 03/093651 (2003-11-01), None
Chinese Office Action (and English translation thereof) dated Apr. 18, 2008, issued in a counterpart Chinese Application.
Notification Concerning Transmittal of International Preliminary Report on Patentability and Written Opinion, Chapter I of the Patent Cooperation Treaty for PCT/JP2005/019126, dated Jun. 5, 2007. 6 sheets.
Iino Takahisa
Inaba Keiichi
Nishiyama Toshihiko
Ogawa Tetsuaki
Sugito Hiroshi
Edgar Richard
Holtz, Holt, Goodman & Chick, PC
Komatsu Ltd.
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