Horology: time measuring systems or devices – Time interval – Gravity actuated type
Patent
1994-03-10
1995-10-10
Miska, Vit W.
Horology: time measuring systems or devices
Time interval
Gravity actuated type
368 95, G04F 108
Patent
active
054576652
ABSTRACT:
An elapsed time indicator can easily indicate time periods of over a month, and is extremely versatile, for example being utilizable in a cap of a water bottle. The indicator includes a substantially transparent and substantially straight tube having first and second ends, an interior and an exterior, with a viscous liquid substantially filling the interior of the tube. A visible indicator, such as a polypropylene spherical bead, a magnetite/wax bead, or a fluid immiscible in the viscous liquid, is immersed in the viscous liquid and dimensioned and positioned with respect to the tube so that it can travel from the first to the second end in a known predetermined period of time when the tube is generally vertical. The time it takes for travel may be precisely calculated. The indicator may be held in a stationary position at one end of the tube, e.g. by clamping a flexible tube end, or using a magnet, prior to initial use. A scale may indicate the relative position of the indicator, and more than one indicator in the same tube, or different in-line and adjacent tubes with different indicators, can be provided.
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Innova Pure Water Inc.
Miska Vit W.
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