US PATENT SUBCLASS 53 / 381.7
.~.~ Means to open flap

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

381.1  DF  MEANS TO OPEN OR ERECT RECEPTACLE {6}
381.5  DF  .~ Means to open envelope {2}
381.7.~.~ Means to open flap

DEFINITION

Classification: 53/381.7

Means to open flap:

(under subclass 381.5) Apparatus including means particularly intended to lift a portion of the cover that projects therefrom which is either integral with the cover or is a distinct member attached to the cover.

(1) Note. A "flap" may pivot about an axis or may pivot about a loosely defined axis. A distinct lid pivotally attached to a cover is considered to be a "flap".