EP 0170484 A2 19860205 - Elapsed time indicator.
Title (en)
Elapsed time indicator.
Title (de)
Anzeiger für die abgelaufene Zeit.
Title (fr)
Indicateur du temps écoulé.
Publication
Application
Priority
GB 8419578 A 19840801
Abstract (en)
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
G04F 1/00 (2006.01); G04F 10/00 (2006.01); G09G 3/04 (2006.01)
CPC (source: EP)
G04F 1/005 (2013.01)
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