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US 4,904,104 AGranted
Fastener for unperforated written matter
AssigneeHetzel & Co.
InventorFriedrich Gloeckle
Life of this patent
Estimating the term…
Abstract
A clamping folder for unperforated written material containing a rear folder cover (14), which is connected using a folded back (13) with a narrow strip (17), to which is welded a front sheet made from transparent or translucent plastic. A clip (16) is used for securing the written matter and is secured against removal in that it engages on one edge (19) of the folder. Edge (19) can e.g. be formed by a slot (15). The engagement of clip (16) for preventing removal can take place on both the front and rear sides.
Claims21
A clamping folder for holding flat sheets such as paper sheets, comprising:
- a front folder cover and a back folder cover, said front and back folder covers being interconnected along a back defining a spline;
- a cross-sectionally substantially U-shaped clip operable to slide over the spline and holding the front and back folder covers between a front leg and a rear leg of the clip, the clip having on the rear leg thereof at least one tongue, substantially coplanar with said rear leg, the tongue being engageable in an opening formed on said back folder cover, the clip being secured from detachment fron the front and back folder covers by engagement with an edge formed on the folder.
Dependencies are inferred from the claim text.