US PATENT SUBCLASS 416 / 140
.~ Including movement limit stop or damping means

Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

131  DF  ARTICULATED, RESILIENTLY MOUNTED OR SELF-SHIFTING IMPELLER OR WORKING MEMBER {7}
140.~ Including movement limit stop or damping means

DEFINITION

Classification: 416/140

(under subclass 131) Apparatus wherein means is provided to limit the extent or reduce the frequency of the impeller or working member movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

106+, for a rotor of the lead-lag type provided with movement restraining means.