Global patent index - EP 1023818 A1

EP 1023818 A1 2000-08-02 - LOW-VOLTAGE NON-THERMIONIC BALLAST-FREE FLUORESCENT LIGHT SYSTEM AND METHOD

Title (en)

LOW-VOLTAGE NON-THERMIONIC BALLAST-FREE FLUORESCENT LIGHT SYSTEM AND METHOD

Title (de)

NIEDERSPANNUNGSLEUCHTSTOFFLAMPENSYSTEM UND VERFAHREN OHNE GLÜHSTARTER ODER VORSCHALTGERÄT

Title (fr)

SYSTEME ET PROCEDE D'ECLAIRAGE FLUORESCENT BASSE TENSION NON THERMOIONIQUE EXEMPT DE BALLAST

Publication

EP 1023818 A1 (EN)

Application

EP 98935753 A

Priority

  • US 9814810 W
  • US 5379697 P
  • US 94267097 A

Abstract (en)

[origin: WO9905890A1] A low voltage, non-thermionic, ballast free fluorescent lighting system includes a low voltage high frequency square wave driver circuit (303) connected to a source (200) and the output from the driver circuit (303) is directly applied to the electrodes of one or more fluorescent lamps (301, 302) so that the voltage on the electrodes reverses its polarity more rapidly than the pattern of electron and ion density in the gas can shift.

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

H05B 37/00

IPC 8 full level (invention and additional information)

H05B 41/282 (2006.01)

CPC (invention and additional information)

H05B 41/2827 (2013.01)

Designated contracting state (EPC)

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

EPO simple patent family

WO 9905890 A1 19990204; AU 746239 B2 20020418; AU 8493798 A 19990216; CA 2285378 A1 19990204; EP 1023818 A1 20000802; EP 1023818 A4 20030813; IL 132311 D0 20010319

INPADOC legal status

2004-07-07 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031115

2003-08-13 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20030627

2003-08-13 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7H 05B 37/00 A

2003-08-13 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7H 05B 41/282 B

2000-08-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991005

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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