A sealing assembly includes a support roller. The sealing assembly also includes a center roller having a sealing ridge attached thereto which operatively contacts the support roller so as to urge a first enclosure sheet into contact with a second enclosure sheet. The sealing assembly further includes...http://www.google.de/patents/US5941048?utm_source=gb-gplus-sharePatent US5941048 - Apparatus and method of sealing an envelope in a document security apparatus
