Liquid level detecting apparatus

Details Liquid level detecting apparatus Liquid level detecting apparatus

2008-05-13

2008-05-13

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

C073S642000, C073S644000

Reexamination Certificate

active

07370527

ABSTRACT:
A liquid level detecting apparatus has an ultrasonic sensor, a reflector, a first pipe and a second pipe. The reflector reflects an ultrasonic wave from the ultrasonic sensor to a liquid level, and the ultrasonic sensor detects a reflection wave reflected on the liquid level to detect a liquid level position. The first and second pipe surrounds the ultrasonic wave transmission path from the ultrasonic sensor via the reflector to the liquid level. The first pipe and the second pipe are integrally configured and supported on a bottom of a tank to be rotatable about the first pipe.

REFERENCES:
patent: 5471872 (1995-12-01), Cummings
patent: 7117738 (2006-10-01), Miyagawa et al.
patent: 7204142 (2007-04-01), Miyagawa et al.
patent: 2004/0020289 (2004-02-01), Gouzou et al.
patent: 06-249697 (1994-09-01), None

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