Global Patent Index - EP 0816775 B1

EP 0816775 B1 2002-09-25 - Gas fired water circulation heater

Title (en)

Gas fired water circulation heater

Title (de)

Gasbeheizter Umlauf-Wasserheizer

Title (fr)

Chauffe-eau à circulation à gaz

Publication

EP 0816775 B1 (DE)

Application

EP 97108554 A

Priority

DE 19626321 A

Abstract (en)

[origin: EP0816775A2] The heater has feed and return unions for an external heating system, and which are connected together by piping passing through a pump and a heat-transfer unit exposed to the combustion gases. Part of this piping forms cooling piping running along the walls of a combustion chamber between the gas burner and the transfer unit. The cooling piping (32) for the combustion chamber (28) is connected at its inlet to the outlet from the transfer unit (26), and can be arranged to connect the latter to the feed union (36). Where the chamber has a front wall (41) detachable from its sidewalls, this can be cooled by a section of pipe (42) connected to the remaining portion of the piping downstream of the transfer unit. This section of pipe can be so dimensioned and connected that it acts as a bypass for the minimum amount of water circulating.

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

F24H 1/44; F24H 9/00

IPC 8 full level (invention and additional information)

F24H 1/44 (2006.01); F24H 9/00 (2006.01); F28F 1/32 (2006.01)

CPC (invention and additional information)

F24H 1/40 (2013.01); F24H 1/24 (2013.01); F24H 1/44 (2013.01); F24H 9/0036 (2013.01); F28F 1/32 (2013.01); F28F 21/083 (2013.01); F28F 21/085 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

EP 0816775 A2 19980107; EP 0816775 A3 19981223; EP 0816775 B1 20020925; DE 19626321 A1 19980108

INPADOC legal status


2016-04-29 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2015-12-01 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 59708303

2014-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2003-09-17 [26N] NO OPPOSITION FILED

- Effective date: 20030626

2003-07-18 [EN] FR: TRANSLATION NOT FILED

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2003-03-26 [GBV] GB: EP PATENT (UK) TREATED AS ALWAYS HAVING BEEN VOID IN ACCORDANCE WITH GB SECTION 77(7)/1977

- Effective date: 20020925

2003-03-03 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2002-10-31 [REF] CORRESPONDS TO:

- Document: DE 59708303 20021031

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE ES FR GB IT NL

2002-09-25 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2002-09-25 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2001-01-31 [17Q] FIRST EXAMINATION REPORT

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1999-09-01 [AKX] PAYMENT OF DESIGNATION FEES

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1999-08-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990623

1998-12-23 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

1998-01-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE ES FR GB IT NL