Hydrometer/fluid level sensor

Details Hydrometer/fluid level sensor Hydrometer/fluid level sensor

2007-06-12

2007-06-12

Williams, Hezron (Department: 2856)

Measuring and testing

Specific gravity or density of liquid or solid

Freely vertical reciprocable float with carried indicium

Reexamination Certificate

active

11103707

ABSTRACT:
A light transmissive body for a fluid condition indicator has a substantial length shaped as a cruciform in transverse cross-section.

REFERENCES:
patent: 3383917 (1968-05-01), Ryder et al.
patent: 3417614 (1968-12-01), Ryder et al.
patent: 3597972 (1971-08-01), Ryder
patent: 3893339 (1975-07-01), Melone
patent: 3895964 (1975-07-01), Sakamoto
patent: 4074025 (1978-02-01), Miyagawa
patent: 4240282 (1980-12-01), Nelson
patent: 4308817 (1982-01-01), Peterson
patent: 5180643 (1993-01-01), Nedbal
patent: 6393910 (2002-05-01), Korb et al.

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