Global Patent Index - EP 1134417 A3

EP 1134417 A3 2002-09-11 - Positive displacement pump

Title (en)

Positive displacement pump

Title (de)

Verdrängerpumpe

Title (fr)

Pompe à déplacement positif

Publication

EP 1134417 A3 (DE)

Application

EP 01104428 A

Priority

  • DE 10012406 A
  • DE 20018958 U

Abstract (en)

[origin: EP1134417A2] The rotary displacement pump has a blade (18) to divide the interior (12) of the pump housing (10) into two chambers, rotated by a drive shaft (14). The blade (18) has sealing bars (20,22) and a spring unit (48) which keeps the sealing bars (20,22) pressed against the inner wall surface of the housing interior (12) in a seal contact. The spring (48) is preferably a leaf spring.

IPC 1-7 (main, further and additional classification)

F04C 2/344; F04C 15/00

IPC 8 full level (invention and additional information)

F01C 21/08 (2006.01); F04C 2/344 (2006.01); F04C 18/344 (2006.01)

CPC (invention and additional information)

F04C 2/3441 (2013.01); F01C 21/08 (2013.01); F01C 21/0809 (2013.01); F01C 21/0881 (2013.01); F04C 2/3442 (2013.01); F04C 18/3442 (2013.01)

Citation (search report)

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

EP 1134417 A2 20010919; EP 1134417 A3 20020911; EP 1134417 B1 20030924; AT 250722 T 20031015; CN 1162621 C 20040818; CN 1317644 A 20011017; EP 1327778 A2 20030716; EP 1327778 A3 20030723; EP 1424495 A2 20040602; EP 1424495 A3 20040623; US 2002136656 A1 20020926; US 6604924 B2 20030812