EP 0107691 B1 19870826 - SEAL FOR ROTARY PISTON PUMP
Title (en)
SEAL FOR ROTARY PISTON PUMP
Publication
Application
Priority
DE 3216990 A 19820506
Abstract (en)
[origin: DE3216990A1] A rotary piston compressor, which is preferably a rotary piston vacuum pump has two shafts which are supported at least in a separation wall or in a separation housing arranged between the section chamber and the adjacent pumping chamber partially filled with oil. The sealing is achieved by a slide ring sealing. A pump fitted on the shaft of the rotary piston is used for its lubrication; its discharged side is connected with the chambers of the slide ring sealing.
IPC 1-7
IPC 8 full level
F04C 27/00 (2006.01)
CPC (source: EP)
F04C 27/009 (2013.01)
Citation (examination)
US 2178425 A 19391031 - JOHNSON WILFRID E
Designated contracting state (EPC)
AT BE CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
DE 3216990 A1 19831110; AU 1516583 A 19831202; DE 3373202 D1 19871001; DK 153174 B 19880620; DK 153174 C 19881212; DK 3984 A 19840105; DK 3984 D0 19840105; EP 0107691 A1 19840509; EP 0107691 B1 19870826; ES 271911 U 19840801; ES 271911 Y 19850216; IT 1212953 B 19891207; IT 8309417 A0 19830506; JP S59500825 A 19840510; NO 834827 L 19831227; WO 8304075 A1 19831124; ZA 833087 B 19840125
DOCDB simple family (application)
DE 3216990 A 19820506; AU 1516583 A 19830503; DE 3373202 T 19830503; DK 3984 A 19840105; EP 8300116 W 19830503; EP 83901375 A 19830503; ES 271911 U 19830502; IT 941783 A 19830506; JP 50152283 A 19830503; NO 834827 A 19831227; ZA 833087 A 19830502