US PATENT CLASS 291
Class Notes
Current as of: June, 1999
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DEFINITION
Classification: 291/
Means for applying sand or like material to vehicle-wheel treads or to vehicle-tracks, such as automobile-roads or railway-rails, or to both the wheel-treads and tracks, for the purpose of increasing the tractive effect between such wheels and roads or rails.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS
118, Coating Apparatus, appropriate subclasses for coating apparatus, per se, and especially
308+, for apparatus for projecting particulate material on work pieces.
222, Dispensing, for dispensing apparatus in general and see the classes noted in sections 12, 16, and 17 of the class definition.
239, Fluid Sprinkling, Spraying, and Diffusing,
650+, for vehicles the sole purpose of which is to distribute sand on highways for use by other vehicles, and comprising a container for nonfluid material (sand) and means to scatter or strew the material over an extended area.