Measuring and testing – Liquid level or depth gauge – Thermal type
Patent
1993-08-25
1995-01-31
Snay, Jeffrey R.
Measuring and testing
Liquid level or depth gauge
Thermal type
222 1, 222 23, 222154, 222185, 422119, 422263, 422264, 422266, 374 54, 116216, 116227, G01F 2322
Patent
active
053850440
ABSTRACT:
Disclosed is an indicator (15, 35) for determining the level of contents in an opaque, plastic container (10). The container (11) is filled with a solid chemical (11), such as a detergent. A spray of warm or hot water (19) impinges upon the eroding surface (16) of the solid chemical (11) to produce a chemical solution. The container (10) is provided with a thermo-chromatic strip (15, 35) for detecting the level of solid chemical (11) within the plastic capsule (10). A method of dispensing a solid chemical (11) and a dispensing container (10) are also disclosed.
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McCall, Jr. John E.
Thomas John E.
Toetschinger Jody A.
Ecolab Inc.
Snay Jeffrey R.
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