Global Patent Index - EP 1064522 A1

EP 1064522 A1 2001-01-03 - GAS METER DUST FILTER

Title (en)

GAS METER DUST FILTER

Title (de)

GASZÄHLER MIT STAUBSCHUTZFILTERN

Title (fr)

COMPTEUR DE GAZ A FILTRES ANTI-POUSSIERES

Publication

EP 1064522 A1 (FR)

Application

EP 99909008 A

Priority

  • FR 9900577 W
  • FR 9803512 A

Abstract (en)

[origin: FR2776379A1] Gas meter has two ultrasonic transducers (22,24) arranged at either end of a measurement conduit (20). Each of the transducers is held in an assembly (30,32) of cross section larger that the transducer cross-section. At least the downstream transducer (24) has a filter (46) placed within its mounting assembly (32), so that it extends over the whole transducer cross section. The filter is an effective dust trap, but still allows the passage of ultrasonic waves.

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

G01F 1/66

IPC 8 full level (invention and additional information)

G01F 1/66 (2006.01); G01F 15/12 (2006.01)

CPC (invention and additional information)

G01F 15/125 (2013.01); G01F 1/662 (2013.01)

Citation (search report)

See references of WO 9947896A1

Designated contracting state (EPC)

DE DK ES FR GB IT NL

EPO simple patent family

FR 2776379 A1 19990924; FR 2776379 B1 20000428; AR 018785 A1 20011212; AU 2840399 A 19991011; BR 9908742 A 20001226; CA 2324216 A1 19990923; CN 1293754 A 20010502; EP 1064522 A1 20010103; HU 0102221 A2 20011028; HU 0102221 A3 20030828; WO 9947896 A1 19990923

INPADOC legal status


2003-04-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021001

2001-03-07 [R17P] REQUEST FOR EXAMINATION FILED (CORRECTION)

- Effective date: 20001005

2001-02-14 [D17P] REQUEST FOR EXAMINATION FILED (DELETED)

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001005

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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