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Current content: 157 593 259 patent documents

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108 752 new documents added

1 451 440 documents amended

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EP 0039459 B1 19831005 - SILENCED TURBO-MACHINE

Title (en)

SILENCED TURBO-MACHINE

Publication

EP 0039459 B1 19831005 (DE)

Application

EP 81103122 A 19810425

Priority

US 8000466 W 19800428

Abstract (en)

[origin: EP0039459A1] A method and apparatus for reducing unwanted pressure impulses in fluid moving devices comprising at least one resonator means (30) for selectively reducing part of the device's blade passing tone, said resonator means being positioned at the point of smallest separation between the casing (12) and the impeller (14).

IPC 1-7

F04D 29/66; G10K 11/16

IPC 8 full level

F04D 29/66 (2006.01); G10K 11/172 (2006.01)

CPC (source: EP)

F04D 29/665 (2013.01); G10K 11/172 (2013.01)

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0039459 A1 19811111; EP 0039459 B1 19831005; DE 3161106 D1 19831110; EP 0050621 A1 19820505; WO 8103201 A1 19811112

DOCDB simple family (application)

EP 81103122 A 19810425; DE 3161106 T 19810425; EP 81900348 A 19800428; US 8000466 W 19800428