Anticipate This!™ | Patent and Trademark Law Blog

They Invented What? (No. 112)

Posted in General Commentary by Jake Ward on September 8, 2019

Anticipate This!™ | Patent and Trademark Law Blog

U.S. Pat. No. 4,300,473: Device for moistening the adhesive coating on postage stamps and envelopes.


What is claimed is:

1. An apparatus for moistening adhesive coatings on postage material and the like, comprising:
         (a) an enclosure member;
         (b) an open top liquid container disposed within said enclosure member;
         (c) a spring biased linkage member pivotally mounted within the enclosure member and biased to a predetermined position;
         (d) a moistening member pivotally mounted to the linkage member, said moistening member being movable from a first position in which it is disposed within the open top liquid container to a second position in which it is extended outwardly from the enclosure member;
         (e) a plunger reciprocally movable within the enclosure member, said plunger engaging the linkage member for applying a force thereto non-coincident with the linkage member’s pivotal axis to overcome its spring bias; and

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