Global Patent Index - EP 1075601 A1

EP 1075601 A1 2001-02-14 - VACUUM PUMP

Title (en)

VACUUM PUMP

Title (de)

VACUUMPUMPE

Title (fr)

POMPE A VIDE

Publication

EP 1075601 A1 (DE)

Application

EP 99923485 A

Priority

  • DE 19819538 A
  • EP 9902882 W

Abstract (en)

[origin: DE19819538A1] The aim of the invention is to provide a means of producing pressure and negative pressure simultaneously with a single-stage pump. To this end, said pump has a pump chamber (18) which is formed in a housing and which is provided with a vacuum connection, a pressure connection and a loading connection. At least two three-blade rotors (30, 32) are arranged in the pump chamber (18). These rotors (30, 32) rotate in opposite directions about parallel axes which are offset from one another, intermesh without touching and together with the peripheral wall of the pump chamber (18), also form cells (60, 62a, 62b,64) which are separate from another.

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

F04C 18/12; F04C 29/08

IPC 8 full level (invention and additional information)

F01C 1/12 (2006.01); F04C 18/12 (2006.01); F04C 18/20 (2006.01); F04C 29/00 (2006.01); F04C 29/12 (2006.01)

CPC (invention and additional information)

F04C 29/122 (2013.01); F04C 18/123 (2013.01)

Citation (search report)

See references of WO 9957439A1

Designated contracting state (EPC)

CH DE FR GB IT LI SE

EPO simple patent family

DE 19819538 A1 19991111; DE 19819538 C2 20000217; CN 1105820 C 20030416; CN 1128935 C 20031126; CN 1299434 A 20010613; CN 1299444 A 20010613; EP 1075601 A1 20010214; EP 1075601 B1 20020918; EP 1076760 A1 20010221; EP 1076760 B1 20030702; JP 2002513880 A 20020514; JP 2002513887 A 20020514; US 6364642 B1 20020402; US 6439865 B1 20020827; WO 9957419 A1 19991111; WO 9957439 A1 19991111

INPADOC legal status


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2011-10-31 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

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2003-09-10 [26N] NO OPPOSITION FILED

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2003-02-28 [ET] FR: TRANSLATION FILED

2002-11-27 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20021031

2002-10-24 [REF] CORRESPONDS TO:

- Document: DE 59902761 20021024

2002-10-15 [REG CH NV] NEW AGENT

- Representative's name: TROESCH SCHEIDEGGER WERNER AG

2002-09-30 [REG CH EP] ENTRY IN THE NATIONAL PHASE

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