发明授权
US3630083A Fill-indicator funnel 失效
FILL-INDICATOR FUNNEL

Fill-indicator funnel
摘要:
A funnel having a fill-indicator as an integral part thereof. The funnel has a tapered body portion with a spout projecting downwardly from the narrow or small end thereof. A tubular member is aligned within the spout and extends into the body portion. The lowermost termination of the tubular member is at a location within the lower half of the length of the spout but is preferably spaced in recess fashion from the lowermost end of the spout. The uppermost termination of the tubular member is at a location within the upper half of the body portion without extending beyond the wide mouth opening thereof. A filter screen is fixed transversely within the tapered body portion to the interior surface of that portion and to the exterior surface of the tubular member; and this filter screen is the sole support means extending between the tubular member and tapered body portion of the funnel. A rod is aligned within the tubular member and has a float fixed to its lower end and a visual level indicator fixed to its upper end. A guide member for longitudinal aligned movement of the rod within the tubular member is located within the tubular member at a position proximate to the small end or throat end of the tapered body portion. A minimum of structural elements are employed, with plural functions performed by most of the elements especially those forming the fillindicator mechanism and those supporting or fixing it as an integral part of the funnel.
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