Cold weather fluidic fan spray devices and method
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United States of America Patent
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Aug 7, 1984
Grant Date -
N/A
app pub date -
Nov 8, 1978
filing date -
Nov 8, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Liquid fan spray system for cyclically deflecting a liquid jet between extreme positions defined by a pair of end walls is assured of cold weather operation by expanding the liquid power jet. In the preferred embodiment, one boundary wall of the oscillator is tapered about 5.degree. from the power nozzle to the outlet throat, and the outlet or throat has the substantially same cross-sectional area maintained for a given oscillatory angle by closing down the lateral extremities of the outlet throat. This assures cold weather starting when the liquid has increased surface tension and viscosity while at the same time maintaining essentially the same fan angle of the cyclically deflected power jet. The invention is particularly useful in providing all weather oscillation in windshield washer systems for automobiles.
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