US Patent 7552513 Barrier hinge assembly

A barrier hinge assembly has an upper hinge assembly, a lower hinge assembly and a turnbuckle assembly. The upper hinge assembly has an upper pintle device and an upper gudgeon device. The upper pintle device has a pintle protruding down. The upper gudgeon device has a through hole in which the upper pintle is mounted. The lower hinge assembly has a lower gudgeon device and a lower pintle device. The lower gudgeon device has a through hole. The lower pintle device has a pintle protruding up and mounted through the through hole of the lower gudgeon device. The turnbuckle assembly is fastened to the pintles of the upper and the lower pintle devices at the same time to hold the upper and the lower gudgeon devices in specific positions.