US3776144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway wagon
Assignee: Rio Tinto Aluminium Holdings Ltd
•
Filing: 1972-02-28
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Granted: 1973-12-04
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Expires: 1992-02-28
Abstract
Abstract The invention consists of a railway wagon body made of metal which has curved sides suspended from longitudinal stringers to eliminate side stiffeners and heavy floor plates to effect a saving in manufacturing cost and in tare weight to increase the pay load. The body is supported on curved bolsters adjacent each end and is internally strengthened by means of bulkheads.
Inventors
- 👤 V Eislers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:20
CPC Classifications
B; B61; B61D; B61D9/00; B61D9/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
A railway wagon body comprising a longitudinal centre sill, a bolster of curved cradle formation supported from said sill at or adjacent each of its ends, a skin or shell having its lower area of curved configuration to match the curve of said bolsters, a plurality of spaced bulkheads welded transversely of and within said skin or shell, the external configuration of each bulkhead being substantially identical with the required cross-sectional internal shape of the shell, each bulkhead extending upwardly substantially to the upper extremity of the shell at least adjacent each side of the shell, and a longitudinal stringer on each side of said wagon supported from said bulkheads, the upper sections of said shell being curved inwardly and connected to said stringers.
Claim 2
Dependent Claim
124 words
A railway wagon body comprising a longitudinal centre sill, a bolster of curved cradle formation supported from said sill at or adjacent each of its ends, a skin or shell having its lower area of curved configuration to match the curve of said bolsters, a plurality of spaced bulkheads welded transversely of and within said skin or shell, the external configuration of each bulkhead being substantially identical with the required cross-sectional internal shape of the shell, each bulkhead extending upwardly substantially to the upper extremity of the shell at least adjacent each side of the shell, and a longitudinal stringer on each side of said wagon supported from said bulkheads, the upper sections of said shell being curved inwardly and connected to said stringers.
Claim 3
Dependent Claim
32 words
A railway wagon body as claimed in claim 1 including three of said bulkheads, one substantially in alignment with each of said bolsters and the third located substantially mid-way between said bolsters.
Claim 4
Dependent Claim
49 words
A railway wagon body as claimed in claim 1 wherein the external configuration of each of said bulkheads comprises a substantially flat base connected with a curved section of relatively small radius through an angle of approximately 90*, and an upper section curving inwardly about a relatively large radius.
Claim 5
Dependent Claim
82 words
A railway wagon as claimed in claim 3 including a plurality of plates each attached by welding to the outer surface of said shell along its line of greatest outward projection and in alignment with each side of each of said bulkheads for engagement by an upper beam of a tipping mechanism and a plurality of plates attached to the outer extremities of said bolsters and to brackets arranged between said bolsters for engagement by a lower beam of said tipping mechanism.
Claim 6
Dependent Claim
23 words
A railway wagon body as claimed in claim 1 having end walls which slope downwardly and inwardly and are welded within said shell.
References Cited (Backward Citations)
US1424479A
Cited
US1579673A
Cited
US1595152A
Cited
US2121365A
Cited
US3253556A
Cited
US3467027A
Cited
US3490387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |