Liquid level sensing apparatus

Details Liquid level sensing apparatus Liquid level sensing apparatus

2011-04-05

2011-04-05

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Reexamination Certificate

active

07918133

ABSTRACT:
A fluid level gauge assembly for measuring a level of a fluid in a fluid container is provided. The fluid level gauge assembly includes a first coaxial cable section having a first end and a second end, the first coaxial cable section including a first center conductor, a first outer conductor and a solid dielectric between the first center and outer conductor; a second coaxial cable section having a first end and a second end, the second coaxial cable section including a second center conductor, a second outer conductor and an air dielectric between the second center and outer conductor; and a coupling between the second end of the first coaxial cable section and the first end of the second coaxial cable section. The second coaxial cable section being disposed in a fluid for determining a level of the fluid.

REFERENCES:
patent: 3703829 (1972-11-01), Dougherty
patent: 4417473 (1983-11-01), Tward et al.
patent: 5457990 (1995-10-01), Oswald et al.
patent: 5781019 (1998-07-01), Telder
patent: 6644114 (2003-11-01), McEwan
patent: 6690320 (2004-02-01), Benway et al.
patent: 6938478 (2005-09-01), Arias

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