Measuring and testing – Specific gravity or density of liquid or solid – Freely vertical reciprocable float with carried indicium
Reexamination Certificate
2006-06-27
2006-06-27
Williams, Hezron (Department: 2856)
Measuring and testing
Specific gravity or density of liquid or solid
Freely vertical reciprocable float with carried indicium
C073S305000, C073S319000, C073S321000, C073S309000, C340S623000, C116S228000
Reexamination Certificate
active
07066024
ABSTRACT:
A float adapted to track an interface between two liquids of differing density, includes a hollow buoyant body having an interior cavity adapted to retain liquid. At least one upper access opening is provided in the body, which is adapted to permit filling of the interior cavity with liquid. The interior cavity is capable of holding sufficient liquid to retard the buoyancy of the body. By filling the interior cavity with a liquid of a first density, the hollow buoyant body can be made to float at an interface with a lighter liquid of a second density.
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Bellamy Tamiko
Hahn Loeser & Parks LLP
Marcinowski Keith J.
Williams Hezron
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