EP 1395755 B1 20061213 - MULTI-STAGE PISTON-TYPE COMPRESSOR
Title (en)
MULTI-STAGE PISTON-TYPE COMPRESSOR
Title (de)
MEHRSTUFIGER KOLBENVERDICHTER
Title (fr)
COMPRESSEUR DE PISTON À PLUSIEURS ÉTAGES
Publication
Application
Priority
- DE 0201887 W 20020524
- DE 10125420 A 20010525
Abstract (en)
[origin: US7351044B2] In order to achieve a high level of impermeability with a low closing force for the sealing elements of a multistage piston compressor, the overflow channel ( 19 ) in the valve piston ( 9 ) opens into at least two passages ( 26, 27 ) and the sealing plate of the overflow check valve ( 20 ) that is located in the valve piston ( 9 ) is configured as a freely guided closing membrane ( 28 ) with a limited stroke. The passages ( 26, 27 ) of the overflow channel ( 19 ) have different diameters, are arranged on a graduated circle at a radial distance from the axis of the closing membrane ( 28 ) and are completely covered by the closing membrane ( 28 ).
IPC 8 full level
F04B 25/02 (2006.01); F04B 25/00 (2006.01); F04B 27/02 (2006.01); F04B 39/00 (2006.01); F04B 39/10 (2006.01)
CPC (source: EP US)
F04B 25/005 (2013.01 - EP US); F04B 25/02 (2013.01 - EP US); F04B 27/02 (2013.01 - EP US); F04B 39/0016 (2013.01 - EP US); F04B 39/1026 (2013.01 - EP US); F04B 39/108 (2013.01 - EP US); F04B 39/1086 (2013.01 - EP US); F05C 2225/00 (2013.01 - EP US)
Citation (examination)
DE 19715291 A1 19981015 - PNP LUFTFEDERSYSTEME GMBH [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
US 2006104844 A1 20060518; US 7351044 B2 20080401; AT E348266 T1 20070115; DE 10125420 C1 20021024; DE 50208956 D1 20070125; EP 1395755 A1 20040310; EP 1395755 B1 20061213; WO 02095227 A1 20021128
DOCDB simple family (application)
US 47938305 A 20051019; AT 02745080 T 20020524; DE 0201887 W 20020524; DE 10125420 A 20010525; DE 50208956 T 20020524; EP 02745080 A 20020524