Wagon body

Details Wagon body Wagon body

1999-05-01

2001-05-22

Morano, S. Joseph (Department: 3617)

Railway rolling stock

Car framing and structure

C105S397000, C105S401000, C105S404000, C105S409000, C105S413000, C105S412000

Reexamination Certificate

active

06234084

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to a carriage body of a railroad car, essentially formed of an undercarriage, a one-piece or multiple-part floor slab, side wall parts, and a roof.
It is usual in railroad car building to form at least the undercarriage of the carriage body from steel or lightweight metal profiles which are joined together by welding. The outer transverse spacing of lateral longitudinal girders of the undercarriage determines the functional size of the carriage body width. In order among other goals to achieve this functional size within existing tolerances, heavy and expensive production equipment and tools are employed. Furthermore, the dimensional changes in the undercarriage, above all from shrinkage, that occur in welding work must be taken suitably into account and as a rule must be compensated for later by expensive straightening work.
SUMMARY OF THE INVENTION
The object of the invention is considered to be attaining the functional size of the carriage body width, in a carriage body of the above generic type, in an especially simple and economical way, without special production equipment and independently of tolerances of the undercarriage.
According to the invention, this object is attained in that the floor slab serves as a device for joining together the carriage body and by its width—together with the thickness of two facing side wall parts—defines the functional size of the carriage body width.
In the carriage body of the invention, the functional size of the carriage body width is no longer affected by the design of the undercarriage. Thus wide dimensional tolerances can be allowed for the undercarriage with respect to its width and also with respect to its dimensions in the direction toward the rail. The undercarriage should merely be such on its top side that large-area support of the one-piece or multiple-part floor slab exists. It is easy to achieve the exact width, required for the functional size of the carriage body width, of the floor slab, which in the simplest case is of plywood. The carriage body of the invention can be made especially inexpensively, and because the complicated production equipment required earlier can be dispensed with, it can be made practically anywhere.


REFERENCES:
patent: 4007567 (1977-02-01), Mooney et al.
patent: 4222335 (1980-09-01), McQueston et al.
patent: 4647101 (1987-03-01), Ruggeri
patent: 5042395 (1991-08-01), Wackerle et al.
patent: 5601034 (1997-02-01), Tao et al.
patent: 5685229 (1997-11-01), Ohara et al.

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