Global Patent Index - EP 1722077 A3

EP 1722077 A3 2009-02-18 - Apparatus to open and close an exhaust gas conduit

Title (en)

Apparatus to open and close an exhaust gas conduit

Title (de)

Vorrichtung zum Freigeben und Absperren einer Aggasleitung

Title (fr)

Dispositif pour ouvrir ou fermer un conduit de gaz d'échappement

Publication

EP 1722077 A3 (DE)

Application

EP 06009602 A

Priority

DE 202005007847 U

Abstract (en)

[origin: EP1722077A2] The device has a blocking unit (3) connected with a compression spring (8), and a connecting rod (5). The spring is enclosed by an insulating material e.g. ceramic fiber, and arranged in a housing. The spring operates in a direction opposite to exhaust gas flow in an exhaust gas pipe (2). The spring moves the blocking unit to an open position, when gas pressure in the pipe exceeds a preset value. The connecting rod is placed in a thrust bearing and is fixed in a displaceable manner in the work direction of the compression spring. An independent claim is also included for an exhaust system with a bypass pipe including a device for blocking and unblocking exhaust gas pipe.

IPC 8 full level (invention and additional information)

F01N 1/16 (2006.01)

CPC (invention and additional information)

F01N 1/165 (2013.01); F01N 2260/06 (2013.01); F01N 2260/20 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK YU

EPO simple patent family

DE 202005007847 U1 20050728; EP 1722077 A2 20061115; EP 1722077 A3 20090218

INPADOC legal status


2009-06-17 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20081202

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

2009-02-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK YU

2006-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

2006-11-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK YU