Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Pliant or elastic hinge
Patent
1994-01-14
1995-11-07
Rosenbaum, Mark
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Pliant or elastic hinge
16385, E05D 100
Patent
active
054637945
ABSTRACT:
Molded fiber reinforced plastic (FRP) composite hinges and a method of making integral fiber hinges molded-in an FRP composite. After a mold surface has been prepared, a layer of fabric is placed against the mold surface, the fabric is impregnated with resin, and a hinge assembly is placed against the resin-impregnated fabric. The hinge assembly includes juxtaposed narrow strips of reinforcing fabric and fiber hinge fabric. The hinge fabric is composed of flexible fibers which are of high tensile strength and capable of repeated flexing without substantial fatigue (e.g. aramid fibers), and which form flexible elements along a desired hinge line in the molded composite. The hinge assembly also has an elongated wire between a strip of hinge fabric and an adjacent strip of reinforcing fabric, the wire being coextensive with the desired hinge line, and the fibers of the fiber hinge fabric extending across the desired hinge line. The hinge assembly fabric is impregnated with resin, and the resin is caused to set, after the resin is set, the molded composite is removed from the mold. Fibers and resin are then removed from between the wire and the inner surface of the molded composite by cutting from the inner surface through the strips of reinforcing fabric to the wire, forming a slot. The wire is removed from the slot leaving a groove in the molded composite along the hinge line. The molded composite is then cut along a boundary intersecting the hinge line at spaced parts to provide a movable section hinged relative to a fixed section of the molded composite along the hinge line by fiber elements of the fiber hinge fabric which extends across the hinge line. Integral hinges and pre-formed hinges are made with this method.
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Mah Chuck Y.
Rosenbaum Mark
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