Title:
HYDRAULIC ROTATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/156266
Kind Code:
A1
Abstract:
Hydraulic rotating machine with pistons, comprising: a casing (102); an inclined plate (130) mounted in the casing; a drive shaft (100) and a barrel (104) which are mounted in the casing; a plurality of pistons (106) which are situated in bores formed in the barrel, the plurality of pistons bearing at a first end against the inclined plate; and a delivery head (110) against which the barrel bears opposite the inclined plate. The delivery of the hydraulic rotating machine is ensured by the delivery head, the delivery head comprising two crescent ports permitting the aspiration and the delivery of a liquid in the hydraulic rotating machine. The delivery head (110) is a cast iron component comprising a surface on which a coating of soft metal (111) has been deposited, the coating of soft metal being in contact with the barrel (104). The soft metal is a non-ferrous metal alloy comprising at least 51% copper relative to the total weight of the non-ferrous metal alloy. The thickness of the coating of soft metal (111) is between 0.5 and 3.5 mm. A method for preparing the two-material delivery head (110) is also proposed.
Inventors:
POREL FRANÇOIS (FR)
Application Number:
PCT/EP2023/053070
Publication Date:
August 24, 2023
Filing Date:
February 08, 2023
Export Citation:
Assignee:
HYDRO LEDUC (FR)
International Classes:
F04B1/2042; F01B3/00; F03C1/06; F03C1/34; F04B1/2021
Domestic Patent References:
| WO2004015286A1 | 2004-02-19 |
Foreign References:
| US6880449B1 | 2005-04-19 | |||
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| US20090120278A1 | 2009-05-14 |
Attorney, Agent or Firm:
LOYER & ABELLO (FR)
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