US PATENT SUBCLASS 305 / 111
.~ With self-cleaning tread or track unit

Current as of: June, 1999
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305 /   HD   WHEEL SUBSTITUTES FOR LAND VEHICLES

100  DF  WITH MEANS TO REMOVE OR EXCLUDE FOREIGN MATTER (E.G., SEAL, SCRAPER) {8}
111.~ With self-cleaning tread or track unit {3}
112  DF  .~.~> Including self-cleaning endless belt
113  DF  .~.~> Having openings through side or base of shoe or link
114  DF  .~.~> With particular shoe, lug, grouser structure, or material

DEFINITION

Classification: 305/111

With self-cleaning tread or track unit:

(under subclass 100) Apparatus including an endless chain of pivotally connected links having a notch at one end and a tongue at the other end traveling with the track unit to scrape automatically from the track shoes or other part of the vehicle any accumulation of dirt, snow, or mud.

SEE OR SEARCH CLASS

180, Motor Vehicles,

190+, for an endless track type element having a

surface-engaging propulsion element.

474, Endless Power Transmission Systems or Components,

901, for a pulley or guide roll for a track of an endless track vehicle. [figure] [caption]Cleaner or cleaning chain F traverse with track to clean track A. A - Endless chain or link track;B - Track shoe; C - Sprocket wheel ;D - Support frame; E - Support; F - Cleaning or cleaning link; G - Notch; H - Tongue; J - Loop; K - Pivot