US PATENT SUBCLASS 37 / 234
.~ Including specific hydraulic control system to position implement


Current as of: June, 1999
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37 /   HD   EXCAVATING

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
234.~ Including specific hydraulic control system to position implement


DEFINITION

Classification: 37/234

Including specific hydraulic control system to position implement:

(under subclass 196) Apparatus wherein adjustment of an excavating implement relative to a carrying means is performed by a control system which incorporates fluid

circuitry and includes means for producing or controlling fluid pressure within the system.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type, appropriate subclass for a hydraulic motor, per se.

172, Earth Working,

812, for an hydraulic system controlling an earthworking blade.