Measuring and testing – Liquid level or depth gauge – With illumination
Patent
1996-09-20
1999-09-14
Williams, Hezron
Measuring and testing
Liquid level or depth gauge
With illumination
73311, 73313, 73319, 250577, G01F 2300
Patent
active
059504870
ABSTRACT:
An apparatus for measuring liquid level in a container, the apparatus having a flexible measurement scale attached at one end to a weight for retainment at the bottom of the container and at the opposite end to a receiver at the top of the container. A float moves along the flexible scale, and has a configuration and density designed to place a portion of the float below the level of the liquid to be measured and a portion above the liquid level. The portion above the liquid level contains transmitter apparatus for applying energy to one side of the scale, and detection apparatus on the other side for detecting energy transmitted through the scale and converting it to a liquid level in the container. The accuracy of readings is enhanced through the use of a wide gap between the scale and float at the liquid-air interface for reducing surface effects between the float and the scale, and through the use of a special two-dimensional vertically offset gray scale code that allows for the use of a more narrow scale and larger spacing between components.
REFERENCES:
patent: 2685797 (1954-08-01), Morschel
patent: 3558861 (1971-01-01), Collins
patent: 3935741 (1976-02-01), Zinsmeyer et al.
patent: 4014015 (1977-03-01), Gundlach
patent: 4079627 (1978-03-01), Gundlach
patent: 4589282 (1986-05-01), Dumery
patent: 4625549 (1986-12-01), Mahoney
patent: 4779460 (1988-10-01), Cruickshank
patent: 4827769 (1989-05-01), Riley et al.
patent: 4848149 (1989-07-01), Fiorentino et al.
patent: 5054319 (1991-10-01), Fling
patent: 5062214 (1991-11-01), Gustafsson et al.
patent: 5245874 (1993-09-01), Baer
patent: 5347864 (1994-09-01), Senghaas
patent: 5483831 (1996-01-01), Steiner
R.C. Stanley, "Anti-Crosstalk Code Reader", IBM Tech. Disclosure Bulletin, vol. 19, No. 9, Feb. 1999.
Burns Alan A.
Eckert Eric G.
Maresca, Jr. Joseph W.
Jaffer David H.
Vista Research, Inc.
Williams Hezron
Worth Willie Morris
LandOfFree
Gauge for measuring liquid levels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gauge for measuring liquid levels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gauge for measuring liquid levels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1498390