Global Patent Index - EP 1236020 A1

EP 1236020 A1 2002-09-04 - LOW IMPEDANCE ENCODER FOR A UTILITY METER

Title (en)

LOW IMPEDANCE ENCODER FOR A UTILITY METER

Title (de)

NIEDEROHMIGE KODIERVORRICHTUNG FÜR EINEN VERBRAUCHSZÄHLER

Title (fr)

CODEUR BASSE IMPEDANCE DESTINE A UN COMPTEUR D'ELECTRICITE

Publication

EP 1236020 A1 (EN)

Application

EP 00978560 A

Priority

  • US 0031091 W
  • US 16513199 P

Abstract (en)

[origin: WO0135058A1] A low impedance encoder generally comprises a clock source and a switch. The clock source operates according to a predetermined duty cycle. The switch has a first position, closed, and a second position, opened. The duty cycle controls a current flow the switch. A high current flow through the switch indicates that the switch is closed and that the consumption of a utility as registered by the utility meter has occured; the switch will continue to open and close throughout the metering process. A low current flow through the switch indicates that the switch is open.

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

G01D 4/00; G01F 15/06; G01F 15/075; G01R 22/00

IPC 8 full level (invention and additional information)

G01D 4/00 (2006.01); G01F 15/06 (2006.01); G01F 15/075 (2006.01); G01R 22/00 (2006.01)

CPC (invention and additional information)

G01F 15/0755 (2013.01); G01D 4/00 (2013.01); G01F 15/063 (2013.01); G01R 22/00 (2013.01)

Citation (search report)

See references of WO 0135058A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0135058 A1 20010517; AU 1601401 A 20010606; BR 0015499 A 20020723; CA 2391006 A1 20010517; CN 1390296 A 20030108; EP 1236020 A1 20020904; JP 2003514235 A 20030415; MX PA02004716 A 20030624

INPADOC legal status


2007-02-28 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060831

2002-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020611

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-09-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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