US PATENT SUBCLASS 171 / 132
.~.~.~ Moving screen or grate (e.g., shaker)


Current as of: June, 1999
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171 /   HD   UNEARTHING PLANTS OR BURIED OBJECTS

111  DF  EARTH REMOVAL AND SEPARATION {8}
124  DF  .~ Moving conveyer, digger or separator {3}
126  DF  .~.~ Moving open separator or separating conveyer {7}
132.~.~.~ Moving screen or grate (e.g., shaker)


DEFINITION

Classification: 171/132

(under subclass 126) Apparatus including a separating surface formed with interstices or apertures, said surface being mounted for a unitary movement to assist in passing earth therethrough or to carry or feed separated objects along said surface.

(1) Note. Included herein are sifting shakers which have no other motion than a jiggling movement to enhance sifting of

earth therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71+, for vibrating separating screens or grates which are disposed in contiguous relation to a plow or earth cutting blade.