US PATENT SUBCLASS 294 / 81.53
.~.~.~ Twist lock

Current as of: June, 1999
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294 /   HD   HANDLING: HAND AND HOIST-LINE IMPLEMENTS

81.1  DF  SPACING HOIST BAR OR FRAME {5}
81.5  DF  .~ Load supporting units {5}
81.52  DF  .~.~ Rotatable about vertical axis {1}
81.53.~.~.~ Twist lock

DEFINITION

Classification: 294/81.53

Twist lock:

(under subclass 81.52) Devices where the load engaging component is insertable into a recess in the load and rotatable therein for attachment purposes.