Books – strips – and leaves – Strips and leaves
Patent
1983-11-14
1986-03-11
Bell, Paul A.
Books, strips, and leaves
Strips and leaves
282 25, 281 38, 229 923, 229 69, B41L 120, B42D 100, B65D 2700, B65D 2710
Patent
active
045751218
ABSTRACT:
A module for postal transmission, particularly for confidential information such as bank statements and the like, according to the invention has at least four sections (13, 15, 17, 19; 313, 315, etc.) defined by parallel fold lines (7, 9, 11; 331, 332, etc.) for repeated folding; on one of the external sections (13; 313) of the module, in the fully-folded configuration, a window (F, F1) is provided for the address; the useful face of these sections is surrounded by a perimetrical strip for permanent sealing (23A, 23B, 23C; 623) to assure the inviolability of said face, while on the reverse side of it a non-permanent glueing (25B, 25C; 125B, 125C, etc.) is provided. With respect to the known cross-folding modules, the module of the invention has a larger useful surface available, assures a higher production rate and is more easily handled.
REFERENCES:
patent: 1424837 (1922-08-01), Lover
patent: 1794223 (1931-02-01), Zabek
patent: 3162116 (1964-12-01), Weber
patent: 3255952 (1966-06-01), Black
patent: 3428237 (1969-02-01), Dowen
patent: 3718277 (1973-02-01), Volkert
patent: 3920267 (1975-11-01), Lyon, Jr.
patent: 4380315 (1983-04-01), Steidinger
patent: 4418865 (1983-12-01), Bowen
Bell Paul A.
Heyrana Sr. Paul M.
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