EP 0170484 A3 19860402 - ELAPSED TIME INDICATOR
Title (en)
ELAPSED TIME INDICATOR
Publication
Application
Priority
GB 8419578 A 19840801
Abstract (en)
[origin: EP0170484A2] An apparatus for indicating the lapse of a predetermined time period compises an indicator element (7), which changes from a first state to a second state when an electrical potential difference is applied to it and reverts to the first state when the potential difference falls below a given value, in combination with a circuit with a bleed resistor (9) for controlling as a function of time a potential difference, applied to th indicator element (7). A cell (1) may apply the potential difference. After a certain period of time the cell (1) will be effectively discharged through the bleed resistor (9), the potential difference applied to the indicator element (7) will fall causing it to change state and sign (8) will then be visible. This indicates the end of the time period.
IPC 1-7
IPC 8 full level
G09G 3/04 (2006.01); G04F 1/00 (2006.01); G04F 10/00 (2006.01)
CPC (source: EP)
G04F 1/005 (2013.01)
Citation (search report)
- [Y] DE 2739819 A1 19790613 - KIENINGER & OBERGFELL
- [Y] DE 2337927 A1 19750213 - HEUER SEN ERNST, et al
- [AP] EP 0135930 A2 19850403 - OMRON TATEISI ELECTRONICS CO [JP]
- [A] DE 3313087 A1 19831103 - SATCHWELL BIRKA [DE]
- [A] PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 77, 17th June 1978, page 3176 E 78; & JP - A - 53 42 777 (DAINI SEIKOSHA K.K.) 18-04-1978
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0170484 A2 19860205; EP 0170484 A3 19860402; ES 545809 A0 19870816; ES 8707806 A1 19870816; GB 8419578 D0 19840905; JP S62247284 A 19871028
DOCDB simple family (application)
EP 85305231 A 19850723; ES 545809 A 19850801; GB 8419578 A 19840801; JP 16782885 A 19850731