Claims
- 1. A railroad car comprising a center sill and a pair of car tubs extending longitudinally along the center sill, each said car tub including a pair of curved portions each having a substantially constant radius of curvature and extending from opposed sides of a center section to vertically extending end sections of said car tub, wherein center-points defining respective radii of curvatures for said pair of curved portions are horizontally spaced from each other and positioned along the same horizontal plane.
- 2. The railroad car of claim 1, further including at least one one-piece tub closure at one end of one said car tub.
- 3. The railroad car of claim 2, wherein said at least one one-piece tub closure is formed of a composite material.
- 4. The railroad car of claim 1, wherein said at least one one-piece tub closure is formed of aluminum.
- 5. The railroad car of claim 1, wherein said center section of each said tub is a flat portion and said radii of curvature are substantially equal.
- 6. The railroad car of claim 1, wherein said tub is formed of a composite material.
- 7. The railroad car of claim 1, wherein said tub is formed as a cold formed aluminum member.
- 8. A railroad car comprising a center sill and a pair of car tubs extending longitudinally along the center sill and at least one one-piece tub closure at one end of one said car tub, wherein the one-piece tub closure includes a planar end member and an extension member extending substantially perpendicular away from said end member, wherein said extension member extends around said end member in substantially the same shape as said tub, a curved transition segment connecting said planar end member with said extension member, and a drain member arched away from said tub to form a drain allowing egress of moisture from within said tub.
- 9. The railroad car of claim 8, wherein each said car tub includes a pair of curved portions extending from opposed sides of a center section to vertically extending end sections of said car tub, wherein center-points defining at least a portion of respective radii of curvature for said pair of curved portions are horizontally spaced from each other.
- 10. The railroad car of claim 9, wherein said center section of each said tub is a horizontally extending flat portion.
- 11. The railroad car of claim 10, wherein said flat center section extends for about one-fifth of the overall width of the tub.
- 12. The railroad car of claim 8, wherein each said one-piece tub closure is formed composite material.
- 13. The railroad car of claim 12, wherein each said tub is formed of composite material.
- 14. The railroad car of claim 12, wherein each said tub is formed as a cold formed aluminum member.
- 15. A railroad car comprising a center sill and a pair of car tubs extending longitudinally along the center sill and at least one one-piece tub closure at one end of one said car tub, wherein each said car tub includes a pair of curved portions extending from opposed sides of a center section to vertically extending end sections of said car tub, wherein center-points defining at least a portion of respective radii of curvature for said pair of curved portions are horizontally spaced from each other by a distance of about one-fifth of the width of said tub.
- 16. A railroad car comprising:a center sill; and a pair of car tubs extending longitudinally along the center sill, wherein each said car tub is formed of a composite material, wherein each said car tub includes a pair of curved portions extending from opposed sides of a flat center section to vertically extending end sections of said car tub, wherein center-points defining at least a portion of respective radii of curvature for said pair of curved portions are horizontally spaced from each other and wherein said flat center section extends for about one-fifth of the overall width of the tub.
- 17. The railroad car of claim 16, wherein said center section of each said tub is a horizontally extending flat portion.
- 18. The railroad car of claim 15, wherein each said car tub includes a composite tub closure.
Parent Case Info
The present application claims the benefit of U.S. Provisional Patent Application Serial No. 60/131,395, filed Apr. 28, 1999 entitled “Railroad Car Tub” which is incorporated herein by reference.
US Referenced Citations (9)
Provisional Applications (1)
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Number |
Date |
Country |
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60/131395 |
Apr 1999 |
US |