Hydrometer/fluid level sensor

Details Hydrometer/fluid level sensor Hydrometer/fluid level sensor

2006-12-12

2008-10-07

Fitzgerald, John (Department: 2856)

Measuring and testing

Specific gravity or density of liquid or solid

Freely vertical reciprocable float with carried indicium

Reexamination Certificate

active

07430907

ABSTRACT:
A battery and battery condition indicator are provided with a seal as monolithic structures whereby the indicator is inserted in an opening in the battery and sealed there against via ribs in the battery confronted by a surface of the indicator and/or ribs on the indicator embedded in a surface of the battery defining the opening.

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