21-03-2019 дата публикации
Номер: US20190084335A1
Принадлежит:
The present invention relates to a flexible and durable bookbinding and to methods for making bound books. More specifically, the present invention relates to books that may withstand substantial and repeated perpendicular flexure along their spine. Among other advantages, these books demonstrate improved resistance to wear and tear and normal usage to remain intact. 1. A book comprising:(a) a front cover having an inner surface and an outer surface;(b) a rear cover having an inner surface and an outer surface;(c) one or more flexible strips;(d) one or more interior sheets; and(e) an optional spine;wherein,(i) the one or more interior sheets each comprises one or more apertures [or slits], such that the one or more apertures [or slits] are each identically oriented on each sheet; and(ii) the one or more flexible strips are in length, between where they are secured at the front and back covers, from about 2 times to about 25 times the thickness of the compiled interior sheets, each strip is threaded through and moves freely through each identically oriented group of apertures [or slits] of the one or more sheets, and wherein each flexible strip is secured at one end to the inner surface of the front cover and at the opposite end of the strip to the inner surface of the rear cover.2. A book according to comprising a single flexible strip claim 1 , wherein the one or more interior sheets each comprises a single aperture [or slit] claim 1 , such that the single aperture [or slit] is identically oriented on each sheet.3. A book according to wherein the flexible strips are in length claim 1 , between where they are secured at the front and back covers claim 1 , from about 3 times to about 15 times the thickness of the compiled interior sheets.4. A book according to wherein the flexible strips are in length claim 1 , between where they are secured at the front and back covers claim 1 , from about 4 times to about 10 times the thickness of the compiled interior sheets.5. A ...
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