Measuring and testing – Liquid level or depth gauge
Reexamination Certificate
2005-11-01
2005-11-01
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
C073S29000R
Reexamination Certificate
active
06959598
ABSTRACT:
A liquid level sensor for an appliance having a container in which liquid flows, and associated method. The sensor comprises a radio frequency oscillator and an antenna array connected to an input port of the oscillator. The antenna array comprises a longitudinal strip and a plurality of conductive fingers extending therefrom. The antenna array is mounted on the appliance in the proximity of the container such that each finger corresponds to a respective level in the container. The sensor includes an output port interconnected with the radio frequency oscillator and outputting a frequency step indicative of the container level to which liquid has reached.
REFERENCES:
patent: 3477258 (1969-11-01), Tichy et al.
patent: 3981194 (1976-09-01), Blise et al.
patent: 5052223 (1991-10-01), Regnault et al.
patent: 5142909 (1992-09-01), Baughman
patent: 5144835 (1992-09-01), McDonald
patent: 5477727 (1995-12-01), Koga
patent: 5832772 (1998-11-01), McEwan
patent: 5862431 (1999-01-01), Christensen
patent: 6025788 (2000-02-01), Diduck
patent: 6097297 (2000-08-01), Fard
patent: 6183054 (2001-02-01), Froger et al.
patent: 6192752 (2001-02-01), Blaine
patent: 6539797 (2003-04-01), Livingston et al.
patent: 6546795 (2003-04-01), Dietz
patent: 6561024 (2003-05-01), Bell
patent: 6571070 (2003-05-01), Oguma et al.
patent: 6606904 (2003-08-01), Muller et al.
patent: 6614391 (2003-09-01), Burger et al.
patent: 6810732 (2004-11-01), Shon
patent: 2002/0075163 (2002-06-01), Smith et al.
patent: 2002/0083767 (2002-07-01), Kemp
Ensinger James W.
Peterson Gregory A.
Emerson Electric Co.
Frank Rodney T.
Williams Hezron
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