| 摘要 |
<p>A GRANULE FLOW TIMER of the Invention A preselected lapsed time indicating granule flow timer. The timer includes in combination first and second enclosed chambers integrally connected by a neck with an opening therethrough to thereby provide communication of an electrically conductive granular material between the first and second chambers dependent upon the physical position of the first and second chambers in respect of each other. The first and second chambers each have an electrically conductive plate integral with an end of each chamber at an end of the chamber remote from the neck that separates the chambers. Each of the chambers have positioned on a wall of the respective chamber at a point between the electrically conductive plates at least one electrical contact element. A souce of electrical energy in conjunction with a switching arrangement is simultaneously electrically connectable to either of the electrically conductive plates and the electric contact element of one of the chambers, dependent upon the physical position of the first and second chambers.</p> |
