Fluid sprinkling – spraying – and diffusing – With viscosity or temperature responsive control means
Patent
1994-10-31
1997-02-04
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
With viscosity or temperature responsive control means
239583, 251273, F16K 3144, B05B 1210
Patent
active
055989730
ABSTRACT:
An improved flow control mechanism for use in an automatic continuous flow liquid dispensing device for dispensing liquid through a dispensing output onto a receiving surface of an article, is disclosed. The improved flow control mechanism comprises a needle valve on a threaded elongate shaft, which shaft is threadably mounted on the dispensing device housing, for movement of the needle valve between a full flow position where the needle valve is retained in spaced relation with respect to the dispensing output opening so as to permit a full flow of liquid from the main chamber through the dispensing output opening, and a reduced flow position where the needle valve is retained in a reduced spaced relation with respect to the dispensing output opening so as to permit only a reduced flow of liquid from the main chamber through the dispensing output opening. A servomotor rotatably drives the threaded elongate shaft under the influence of a controlling computer that receives feedback signals from sensors mounted within the dispensing device housing. The position of the needle valve is regulated between its full flow position and its reduced flow position according to the feedback signals.
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patent: 5249773 (1993-10-01), Feld
patent: 5348585 (1994-09-01), Weston
Hewson Donald E.
Weldon Kevin
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