초록 ▼

A railway tank car of light weight and high cargo load capacity in which a tank shell structure is carried on and unified with an underframe including a stub sill at each end, a pair of spaced apart saddle bolsters, each joined to a respective one of the stub sills, and a center sill interconnecting

A railway tank car of light weight and high cargo load capacity in which a tank shell structure is carried on and unified with an underframe including a stub sill at each end, a pair of spaced apart saddle bolsters, each joined to a respective one of the stub sills, and a center sill interconnecting the saddle bolsters. The tank shell rests on and is welded to the center sill, the saddle bolsters, and the stub sills, so that the tank shell is an integral part of the car, and both static and dynamic load forces resulting from train operation and from cargo loads are shared by the tank and the underframe. The underframe is constructed primarily of welded flat plate, with a minimum of specially formed parts and difficult welds, in order to simplify and minimize the costs of construction.

대표청구항 ▼

1. A railroad tank car, comprising:(a) an elongate, generally cylindrical tank having a first end, an oppositely located second end, a top, and a bottom; (b) a pair of saddle bolsters, one of said saddle bolsters being located proximate each said end of said tank; (c) a longitudinally extending cent

1. A railroad tank car, comprising:(a) an elongate, generally cylindrical tank having a first end, an oppositely located second end, a top, and a bottom; (b) a pair of saddle bolsters, one of said saddle bolsters being located proximate each said end of said tank; (c) a longitudinally extending center sill attached to both of said saddle bolsters, said center sill having a length and interconnecting said saddle bolsters with each other and extending along and in contact with said bottom of said tank and being interconnected with said bottom of said tank along substantially all of said length; and (d) a respective stub sill located adjacent each of said ends and attached to a respective one of said saddle bolsters and extending longitudinally outward beyond a respective one of said ends of said tank, said stub sill fitting matingly against and being attached to a portion of said bottom of said tank located adjacent said respective one of said ends and longitudinally outward from said respective one of said saddle bolsters, and said stub sill extending laterally outward toward each of a pair of sides of said tank car, beyond a width of said center sill.