US PATENT SUBCLASS 192 / 53.3
.~.~.~ With blocker

Current as of: June, 1999
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192 /   HD   CLUTCHES AND POWER-STOP CONTROL

30 R  DF  CLUTCHES {15}
52.1  DF  .~ Progressive engagement {4}
53.1  DF  .~.~ Frictional and positive {5}
53.3.~.~.~ With blocker {6}
53.31  DF  .~.~.~.~> Self-energizing
53.32  DF  .~.~.~.~> Interposed friction members
53.33  DF  .~.~.~.~> Member extending axially between friction surfaces {1}
53.34  DF  .~.~.~.~> Outward tooth or lug on friction member {1}
53.35  DF  .~.~.~.~> Inward tooth or lug on friction member
53.36  DF  .~.~.~.~> Radially movable blocker {2}

DEFINITION

Classification: 192/53.3

With blocker:

(under subclass 53.1) Subject matter wherein structure is provided to resist or delay movement of a shiftable positive clutch element into full engagement to facilitate

synchronization.

(1) Note. Clutches in subclasses 53.3+ are typically synchronizer clutches for use in transmissions to facilitate shifting from one gear ratio to another, and classification in these subclasses is proper even if one clutch element is claimed as a gear.

(2) Note.Where parallel transmission shafts and cooperating gears are claimed, classification in Class 74, subclasses 325+ is proper.