Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Reexamination Certificate
2006-02-27
2009-12-08
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade edge and static part
C415S173600, C415S174500, C416S21900R, C416S24400R
Reexamination Certificate
active
07628581
ABSTRACT:
A rotating machine (10), in particular a compressor or turbine, has a rotor shaft (11) which is rotatable about an axis (20) and is provided with at least one slot (14). The mechanical stresses in the region of the slot are reduced in that the at least one slot (14) has a slot bottom (17) with an elliptic cross-sectional contour (24).
REFERENCES:
patent: 2429215 (1947-10-01), Boestad
patent: 3784320 (1974-01-01), Rossmann et al.
patent: 3881844 (1975-05-01), Hennessey et al.
patent: 3922109 (1975-11-01), Hagen
patent: 3955898 (1976-05-01), Zaehring
patent: 4255086 (1981-03-01), Roberts
patent: 4813850 (1989-03-01), Partington
patent: 4818182 (1989-04-01), Bouru
patent: 5110262 (1992-05-01), Evans
patent: 5141401 (1992-08-01), Juenger et al.
patent: 6237558 (2001-05-01), Ergezen et al.
patent: 6478539 (2002-11-01), Trutschel
patent: 0945594 (1999-09-01), None
patent: 1331362 (2003-07-01), None
patent: 2265671 (1993-10-01), None
Search Report for Swiss Patent App. No. CH 3702005 (Apr. 19, 2006).
Search Report for European Patent App. No. 06110074.9 (May 29, 2006).
Nishitani, H., et al.,“Stress Concentration Factors for the Torsion of Shafts with a Circumferential Semi-elliptic Groove,” Transactions of the Japanese Society of Mechanical Engineers (Japanese Society of Mechanical Engineers)—Nihon Kikai Gakkai Robbunshu (Nihon Kikai Gakkai), Bd. 43, Nr. 374, 1977, Seiten 3642-3650, Nihon Kikai Gakkai, Tokyo, JP, ISSN: 0387-5016.
Search Report from European Patent App. No. 06110074.9 (Aug. 18, 2008).
De Simone Andrea
Fältström Jonas
Kiewel Holger
Kramer Thomas
Wiebe Markus Roland
ALSTOM Technology Ltd.
Cermak Adam J.
Cermak Kenealy Vaidya & Nakajima LLP
Kershteyn Igor
LandOfFree
Rotating machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotating machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotating machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4070514