Patent ID: 7503460

Claim:
Apparatus comprising a gantry crane having a rigid open three-dimensional horizontal beam having first and second ends, a rigid open three-dimensional first leg structure rigidly connected at the first end of the rigid open three-dimensional beam, and a vertically supporting second leg structure connected to the second end of the rigid open three dimensional beam, wherein the rigid leg structure comprises first and second upward and inward converging vertical legs and connection plates at the tops of the first and second legs for connection to a cross-beam and plates at the top of the open three-dimensional horizontal beam, and wherein a lower member of the horizontal beam has an extended first end which extends outward between the first and second legs, third and fourth upward extending, inward converging and outwardly sloping legs, a top plate connected to tops of the third and fourth outwardly sloping legs, and further comprising a complementary end plate connected to an end of the extended lower member and connected to the top plate at the tops of the third and fourth legs.