Title:
HYDROSTATIC MACHINE, ESPECIALLY AXIAL PISTON MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/003922
Kind Code:
A3
Abstract:
The invention relates to a hydrostatic machine, especially axial piston machine, comprising a driving shaft which is rotatably mounted in a housing and extends through the housing wall, a gap between the driving shaft and the housing wall being sealed off by a radial shaft sealing system. Said radial shaft sealing system comprises a radial shaft sealing ring and a counter-bearing surface the top surface of which has a hydrodynamic return structure. The aim of the invention is to devise a hydrostatic machine, especially axial piston machine of the above-mentioned type, which comprises a particularly resistant radial shaft sealing system having high sealing effect and particularly low leakage behavior. This aim is achieved in that the surface of the return structure is coated with a hard diamond-type coating.
Inventors:
BLUM KARL-HEINZ (DE)
Application Number:
PCT/EP2011/002955
Publication Date:
April 12, 2012
Filing Date:
June 15, 2011
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
BLUM KARL-HEINZ (DE)
BLUM KARL-HEINZ (DE)
International Classes:
F16C33/76; F03C1/06; F04B1/12; F04B1/14; F04B1/20; F16J15/32
Foreign References:
US20030221549A1 | 2003-12-04 | |||
EP1255940A2 | 2002-11-13 | |||
DE102008039809A1 | 2010-02-25 | |||
DE4232891A1 | 1993-04-01 | |||
EP1050680A2 | 2000-11-08 | |||
DE102008039805A1 | 2010-02-25 | |||
US3572730A | 1971-03-30 | |||
US3259393A | 1966-07-05 |
Other References:
GREIM, JOCHEN; LANGE, DIETRICH: "Dichtkunst aus Keramik / Keramik für Gleitringdichtungen und Gleitlager", CHEMIE TECHNIK, no. 09/2009, 14 September 2009 (2009-09-14), Heidelberg, pages 50 - 51, XP002666984
Attorney, Agent or Firm:
THUERER, Andreas (Zum Eisengiesser 1, Lohr, DE)
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