Measuring and testing – Liquid level or depth gauge – Float
Reexamination Certificate
2007-05-04
2008-11-04
Moulis, Thomas N (Department: 3747)
Measuring and testing
Liquid level or depth gauge
Float
C073S317000
Reexamination Certificate
active
07444865
ABSTRACT:
A liquid level sensor for insertion into a tank for measuring the liquid level in the tank comprises an elongate tubular frame and a float movable inside the frame to seek the liquid level. A float lock guide formed as an elongate member is mounted lengthwise inside the frame. A float lock formed as an elongate member is located inside the frame parallel to the float lock guide. A plurality of linkages is pivotally connected between the float lock guide and the float lock such that lengthwise movement of the float relative to the float lock guide causes corresponding lateral movement of the float in the frame between an unlocked position where the float is free to move lengthwise in the frame to seek the liquid level and a locked position where frictional forces retain the float between the float lock and an inner wall portion of the frame.
REFERENCES:
patent: 884370 (1908-04-01), Dobson
patent: 1495292 (1924-05-01), Echtler
patent: 2006616 (1935-07-01), Adams
patent: 2069793 (1937-02-01), Watson
patent: 2102615 (1937-12-01), Cubete
patent: 2592929 (1952-04-01), Matchett
patent: 2685797 (1954-08-01), Morschel
patent: 2771774 (1956-11-01), Fornasieri
patent: 3115782 (1963-12-01), Lenker
patent: 3314292 (1967-04-01), Schulte et al.
patent: 3555904 (1971-01-01), Lenker
patent: 3793884 (1974-02-01), Fling et al.
patent: 4064754 (1977-12-01), Frey
patent: 4134022 (1979-01-01), Jacobsen
patent: 4275295 (1981-06-01), Menningen et al.
patent: 4560868 (1985-12-01), Brogardh et al.
patent: 4692023 (1987-09-01), Ohtomo et al.
patent: 4745293 (1988-05-01), Christensen
patent: 4796472 (1989-01-01), Lew
patent: 4802363 (1989-02-01), Fling et al.
patent: 4833919 (1989-05-01), Saito et al.
patent: 4870861 (1989-10-01), Ohtani et al.
patent: 4928526 (1990-05-01), Weaver
patent: 5001338 (1991-03-01), Boero
patent: 5031655 (1991-07-01), Hebaus
patent: 5056364 (1991-10-01), Kahler et al.
patent: 5174345 (1992-12-01), Kesterman et al.
patent: 5655565 (1997-08-01), Phillips et al.
patent: 6167756 (2001-01-01), Everson et al.
patent: 2004/0182151 (2004-09-01), Meure
patent: 2007/0181585 (2007-08-01), Lane
Fling John J.
Fling William F.
Lynn & Lynn
Moulis Thomas N
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