Fluid sprinkling – spraying – and diffusing – With selectively preset flow cutoff or initiating means
Reexamination Certificate
1999-12-28
2001-08-07
Scherbel, David A. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With selectively preset flow cutoff or initiating means
C239S069000, C239S070000, C239S172000, C239S302000, C239S337000, C239S379000, C239S346000
Reexamination Certificate
active
06270020
ABSTRACT:
BACKGROUND
The present invention relates to systems for spreading deicer on roadways, and in particular to systems of this type that are well suited for use in remote locations.
Freezing water on roadways causes driving hazards, and it has been suggested in the past to provide roadside systems for dispensing a deicer such as a brine solution or rock salt onto the roadway when icing conditions are present. See the systems described in U.S. Pat. Nos. 4,222,044; 5,447,272; and 5,282,590.
The deicing systems identified above all include an electrically powered pump or spreader for propelling the deicer onto the roadway. This approach is not well suited for use in remote locations, where it may not be convenient or economical to connect the deicing system to the power grid. The present invention is directed to an improved roadway deicing system that overcomes this disadvantage of the prior art.
SUMMARY
By way of introduction, the roadway deicing system described in detail below includes a deicer storage container as well as a pressurized gas storage container. A dispenser is coupled both to the deicer storage container and to the pressurized gas storage container, and this dispenser is powered by pressurized gas to propel deicer from the deicer storage container onto a roadway.
Because the dispenser is powered by pressurized gas, the deicing system described below requires relatively low electrical power to operate. For this reason, it is well suited to be powered by conventional storage batteries.
The foregoing paragraphs have been provided merely by way of introduction, and they are not intended to limit the scope of the following claims.
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June David L.
Stephens Barry D.
Thompson Jeffrey M.
Brinks Hofer Gilson & Lione
Energy Absorption Systems, Inc.
Evans Robin O.
Scherbel David A.
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