Global Patent Index - EP 0723821 B1

EP 0723821 B1 2000-02-09 - Automatic interior cleaning system for a powdered material processing device

Title (en)

Automatic interior cleaning system for a powdered material processing device

Title (de)

Automatisches Innenreinigungssystem für eine Vorrichtung zum Bearbeiten von pulverförmigen Materialen

Title (fr)

Système automatique de nettoyage de l'intérieur d'un dispositif de traitement de matériaux pulvérulents

Publication

EP 0723821 B1 (EN)

Application

EP 95117438 A

Priority

  • JP 2998495 A
  • JP 2998595 A

Abstract (en)

[origin: EP0723821A1] An automatic interior cleaning system for a powdered material processing device cleans interior surfaces of powdered material processing devices such as silos, mixers, and dust collectors. A compressor and an accumulator tank (7) supply a cleaning gas, preferably air, at a sufficient pressure to dislodge residues of powdered materials that collect on interior surfaces of a powdered material processing device. A valve (6) connecting the accumulator tank (7) to a cleaning nozzle tube opens (4) and closes, supplying a pulse of air to the cleaning nozzle tube (4). Slits (5) in the cleaning nozzle tube (4) deliver the pulse of pressurized air to an inside surface of the powdered material processing device. The pulse of pressurized air produces a shock wave which dislodges residues from the interior surface of the powdered material processing device. Automatic removal of residues during processing prevents contamination of subsequently processed materials. <IMAGE>

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

B08B 5/02

IPC 8 full level (invention and additional information)

B08B 5/02 (2006.01)

CPC (invention and additional information)

B08B 5/02 (2013.01)

Designated contracting state (EPC)

CH DE DK ES FR GB IT LI NL SE

EPO simple patent family

EP 0723821 A1 19960731; EP 0723821 B1 20000209; DE 69515019 D1 20000316; DE 69515019 T2 20000928

INPADOC legal status


2016-01-29 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

- Effective date: 20151105

2015-11-25 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20151105

2015-11-06 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 69515019

2015-03-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20141127

- Year of fee payment: 20

2015-02-27 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20141126

- Year of fee payment: 20

2015-01-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20141126

- Year of fee payment: 20

2015-01-30 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20141120

- Year of fee payment: 20

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-01-24 [26N] NO OPPOSITION FILED

2000-08-15 [REG CH PL] PATENT CEASED

2000-07-03 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2000-06-16 [ET] FR: TRANSLATION FILED

2000-05-09 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000509

2000-05-09 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000509

2000-05-03 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: PROROGA CONCESSA IN DATA: 30.06.2000;ING. C. CORRA

2000-03-16 [REF] CORRESPONDS TO:

- Document: DE 69515019 20000316

2000-02-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): CH DE DK ES FR GB IT LI NL SE

2000-02-09 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Free text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

- Effective date: 20000209

2000-02-09 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000209

2000-02-09 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000209

2000-02-09 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000209

1997-11-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19970919

1997-03-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970109

1996-07-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE DK ES FR GB IT LI NL SE