Signals and indicators – Indicators – Liquid level
Patent
1988-11-03
1989-06-20
Yasich, Daniel M.
Signals and indicators
Indicators
Liquid level
73293, 250577, 340619, G01F 2302
Patent
active
048401374
ABSTRACT:
A liquid level gauging system and sensor device for installation in the aperture of a wall of a liquid-containing vessel, including a metal fitting having a through bore and a substantially cylindrical body portion with external threads by which it can be secured in the aperture in the vessel wall, a cup-like enclosure disposed in the bore, the enclosure having a bottom wall containing a prism disposed adjacent the inner end of the bore, and a light source and a light-responsive device mounted in the enclosure. The prism has a substantially conical forward end portion for immersion in the liquid to be monitored. The conical forward end portion of the prism is characterized by an axis, and the prism has a light-admitting and light-transmitting conical recess coaxial with the conical end portion of the prism. Light rays from the source that pass into the surface of the conical recess are bent, by refraction, toward the conical end portion. Reflected rays from the conical end portion passing outwardly through the surface of the conical recess are similarly bent, by refraction, toward the light-responsive means. Especially high resolution and accuracy are possible, while maintaining good reliability and repeatability.
REFERENCES:
patent: 1883971 (1932-10-01), Kryzanowsky
patent: 2368705 (1945-02-01), Du Pont et al.
patent: 2620660 (1952-12-01), Goldsmith
patent: 2704454 (1955-03-01), Martin
patent: 3054291 (1962-09-01), Landwer
patent: 3263553 (1966-08-01), Baruch
patent: 3299770 (1967-01-01), Witt et al.
patent: 3367184 (1968-02-01), McHugh
patent: 3448616 (1969-06-01), Wostl et al.
patent: 3543581 (1970-12-01), Ryder
patent: 3553666 (1971-01-01), Melone
patent: 3589191 (1971-06-01), Kelch, Jr.
patent: 3751672 (1973-08-01), Michel et al.
patent: 3766395 (1973-10-01), Keir
patent: 3796098 (1974-03-01), Trayer
patent: 3818470 (1974-06-01), Hirsbrunner et al.
patent: 3834235 (1974-09-01), Bouton et al.
patent: 3850528 (1974-11-01), DeBellis
patent: 3917411 (1975-11-01), Schweizer et al.
patent: 3932038 (1976-01-01), Schweizer et al.
patent: 3977790 (1976-08-01), Schweizer et al.
patent: 3995169 (1976-11-01), Oddon
patent: 4037967 (1977-07-01), Schweizer et al.
patent: 4134022 (1979-01-01), Jacobsen
patent: 4155013 (1979-05-01), Spiteri
patent: 4242590 (1980-12-01), von Tluck
patent: 4306805 (1981-12-01), Arrington
patent: 4320291 (1982-03-01), Uramoto
patent: 4354180 (1982-10-01), Harding
patent: 4468567 (1984-08-01), Sasano et al.
patent: 4583293 (1986-04-01), Smith
patent: 4638663 (1987-01-01), Seelhorst
patent: 4644177 (1987-02-01), Barabino
patent: 4684417 (1987-08-01), Grandclement
patent: 4711126 (1987-12-01), Houpt et al.
patent: 4713552 (1987-12-01), Denis
Aeroquip Tedeco Division Bulletin TDB L250, 1987, Tedeco Division, 24 E. Glenolder Ave., Glenolder, Pa. 19036 (2 pages).
Aeroquip Tedeco Division Product Information and Application News, TTN-2, Summer 1986, Same Address as Ref. "AR", (2 pages).
Beauvais Thomas
Krenke Vincent G.
Lupoli Peter J.
Mattis Donald J.
Bittman Mitchell D.
Casco Products Corporation
Yasich Daniel M.
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