Drip counter apparatus

Details Drip counter apparatus Drip counter apparatus

1998-09-25

1999-11-09

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

340602, 340606, 604253, G08B 2100

Patent

active

059822899

ABSTRACT:
In apparatus for counting a succession of falling liquid drops having teardrop shape, with a downwardly convex down side, the combination that includes a beam provider for providing a beam of electromagnetic radiation to sidewardly pass into the drop at its convex lower side, to be refracted within the drop to pass out of the drop at its convex lower side, and a beam detector located to detect the refracted beam that has passed sidewardly out of the drop at its convex lower side.

REFERENCES:
patent: 3596515 (1971-08-01), Cramer
patent: 3994423 (1976-11-01), Burg
patent: 4533350 (1985-08-01), Danby et al.
patent: 4635281 (1987-01-01), Jones
patent: 4673820 (1987-06-01), Kamen
patent: 4680977 (1987-07-01), Conero et al.
patent: 4718896 (1988-01-01), Arndt et al.
patent: 4829448 (1989-05-01), Balding et al.
patent: 5186057 (1993-02-01), Everhart
patent: 5411052 (1995-05-01), Murray
patent: 5703568 (1997-12-01), Hegyi

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