Global Patent Index - EP 1050731 A1

EP 1050731 A1 2000-11-08 - Firing furnace

Title (en)

Firing furnace

Title (de)

Brennofen

Title (fr)

Four de cuisson

Publication

EP 1050731 A1 (DE)

Application

EP 00108918 A

Priority

DE 19920136 A

Abstract (en)

The firing kiln (1) is for ceramic products and comprises a housing with an inner chamber for the products and at least one heating device bringing the chamber to the required temperature. In at least one zone is a blower (13) which sucks rising hot ga and blows them back against the products (7) under pressure. In the zone is a dividing wall (10), which separates a suction chamber (11) from a feed-back chamber (12). The feed-back chamber has a bulkhead (15) extending closely to the products. The feed-back chamber at its end adjacent to the products is bridged over an outlet grid (17).

Abstract (de)

Ein Brennofen (1) zum Brennen insbesondere von Keramikwaren (7) umfaßt neben den bekannten Brennern (8), welche mit Hilfe einer geeigneten Regelung das im Ofenraum (5) erforderliche Temperaturprofil erzeugen, ein Gebläse (13) zur zusätzlichen Umwälzung der heißen Gase in bestimmten Zonen. Das Gebläse (13) saugt die aufsteigenden heißen Gase über einen Ansaugraum (11) an und führt diese über einen Rückführraum (12) bis nahe an die obere Seite des Brenngutes (7) zurück. Dieses wird in dem fraglichen Bereich von heißen Gasen umspült und ggf. durchspült, wodurch im Brenngut (7) eine raschere Erwärmung sowie eine gleichmäßigere Temperaturverteilung beim Aufheizen und Brennen erzielt wird. <IMAGE>

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

F27B 9/30

IPC 8 full level (invention and additional information)

F27B 9/10 (2006.01); F27B 9/30 (2006.01); F27D 7/04 (2006.01); F27B 9/02 (2006.01); F27B 9/36 (2006.01); F27B 9/40 (2006.01); F27D 99/00 (2010.01)

CPC (invention and additional information)

F27D 7/04 (2013.01); F27B 9/10 (2013.01); F27B 9/3011 (2013.01); F27B 9/029 (2013.01); F27B 9/40 (2013.01); F27B 2009/3055 (2013.01); F27B 2009/3638 (2013.01); F27D 99/007 (2013.01); F27D 2007/045 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 1050731 A1 20001108; EP 1050731 B1 20060308; DE 19920136 A1 20001116; DE 19920136 B4 20070712; DE 50012335 D1 20060504

INPADOC legal status


2013-04-25 [REG DE R107] PUBLICATION OF GRANT OF EUROPEAN PATENT RESCINDED

- Document: DE 50012335

- Effective date: 20130425

2013-03-06 [27W] REVOKED

- Effective date: 20120907

2013-03-06 [GBPR] GB: PATENT REVOKED UNDER ART. 102 OF THE EP CONVENTION DESIGNATING THE UK AS CONTRACTING STATE

- Effective date: 20120907

2012-10-05 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

- Owner name: EISENMANN AG, DE

- Effective date: 20120903

2012-10-05 [REG FR TP] TRANSMISSION OF PROPERTY

- Owner name: EISENMANN AG, DE

- Effective date: 20120903

2012-09-28 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20120424

- Year of fee payment: 13

2012-09-07 [REG DE R064] EPO'S REVOCATION DECISION NOW FINAL

- Document: DE 50012335

2012-09-07 [REG DE R103] PATENT REVOKED BY EPO

- Document: DE 50012335

2012-08-31 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20120515

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2012-08-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2012-07-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20120628

- Year of fee payment: 13

2011-07-21 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: EISENMANN AG, DE

- Free text: FORMER OWNER: EISENMANN ANLAGENBAU GMBH & CO. KG, 71032 BOEBLINGEN, DE

- Document: DE 50012335

- Effective date: 20110513

2007-12-19 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: EISENMANN ANLAGENBAU GMBH & CO. KG

2007-01-17 [26] OPPOSITION FILED

- Opponent name: RIEDHAMMER GMBH

- Effective date: 20061206

2006-11-03 [ET] FR: TRANSLATION FILED

2006-05-04 [REF] CORRESPONDS TO:

- Document: DE 50012335 P 20060504

2006-03-29 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20060308

2006-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2006-03-08 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2005-01-12 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: EISENMANN MASCHINENBAU GMBH & CO. KG

2004-03-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040206

2001-07-25 [AKX] PAYMENT OF DESIGNATION FEES

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2001-05-30 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010330

2000-11-08 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): DE FR GB IT

2000-11-08 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI