Abstract: A composite sheet structure is presented, and includes a core layer and two surface layers. Each surface layer has a plurality of metallic sheets. The metallic sheets bond with one another. The core layer and the surface layers bond with each other, and the core layer is sandwiched between the two surface layers. In comparison to conventional single type/solid piece of building material, the present invention results in a dramatic cost reduction in various building industry. With the up-to-date technology, the strength of metallic composite sheet remains within structural grade parameter and meets related specifications. Manufacturers are benefited from the cheaper metallic sheet in the composition while enjoying the same quality look of the outer layer.

Abstract: A hinge includes a shaft, a bracket, two washers, a resilient member assembly mating with the pole, and a fastener. The shaft includes a pole. The bracket includes a knuckle portion. The washers are mounted on the pole. The fastener is engaging with the pole and exerting force against the washers, and the resilient member assembly.

Abstract: A composite sheet structure is presented, and includes a core layer and two surface layers. Each surface layer has a plurality of metallic sheets. The metallic sheets bond with one another. The core layer and the surface layers bond with each other, and the core layer is sandwiched between the two surface layers. In comparison to conventional single type/solid piece of building material, the present invention results in a dramatic cost reduction in various building industry. With the up-to-date technology, the strength of metallic composite sheet remains within structural grade parameter and meets related specifications. Manufacturers are benefited from the cheaper metallic sheet in the composition while enjoying the same quality look of the outer layer.

Abstract: A method of manufacturing a composite product includes the following steps of preparing at least one metallic piece; placing the metallic piece into a mold and then punching the metallic piece to be bent after the mold is closed; and injecting a polymer into the mold to allow the polymer contact the surface of the metallic piece. The metallic piece can be a single-layered metallic plate or a composite metallic plate. With the implementation of the invention, the production cost can be saved and the production procedure can be simplified. A composite product is further provided.

Abstract: A process of producing composite sheet is presented, and the process comprises the steps of: (a) providing a plurality of metallic sheets; (b) bonding the metallic sheets with one another; and(c) finishing the bonded composite sheet that has a plurality of metallic layers. In comparison to conventional single type/solid piece of building material, the present invention results in a dramatic cost reduction in various building industry. With the up-to-date technology, the strength of metallic composite sheet remains within structural grade parameter and meets related specifications. Manufacturers are benefited from the cheaper metallic sheet in the composition while enjoying the same quality look of the outer layer. Furthermore, a structure of the composite sheet is also presented in the present invention.

Abstract: A hinge includes a shaft, a bracket, two washers, a resilient member assembly mating with the pole, and a fastener. The shaft includes a pole. The bracket includes a knuckle portion. The washers are mounted on the pole. The fastener is engaging with the pole and exerting force against the washers, and the resilient member assembly.