US3200771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway truck having spring mounted bolster
Assignee: ArcelorMittal Dofasco Inc
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Filing: 1961-12-26
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Granted: 1965-08-17
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard N Dobson
- 👤 Howard J Bexon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:10
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/10; B61C; B61C9/00; B61C9/38; B61C9/48; B61C9/50; B61F3/00; B61F3/02; B61F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A RAILWAY TRUCK A RIGID TRUCK FRAME HAVING A TRUCK FRAME CENTRAL VERTICAL AXIS AND COMPRISING TWO SPACED SUBSTANTIALLY PARALLEL SIDE FRAME MEMBERS EACH HAVING A RESPECTIVE SIDE FRAME CENTRAL VERTICAL AXIS, AND EACH FORMED AT LEAST APPROXIMATELY CENTRALLY OF ITS LENGTH WITH A RESPECTIVE OPEN-TOPPED GAP HAVING GENERALLY VERTICAL SIDE FACES AND A HORIZONTAL BOTTOM FACE WITH THE BOTTOM FACE LOCATED INTERMEDIATELY OF THE DEPTH OF THE CORRESPONDING SIDE MEMBER, A JOURNAL BOX MOUNTED AT EACH END OF EACH SIDE FRAME MEMBER FOR VERTICAL MOVEMENT RELATIVE THERETO, RESILIENT MEANS INTERPOSED BETWEEN EACH JOURNAL BOX AND THE RESPECTIVE FRAME END FOR RESILIENTLY CONTROLLING THE MOVEMENT OF THE JOURNAL BOX IN THE FRAME, TWO AXLES EACH ROTATABLY MOUNTED IN A CORRESPONDING PAIR OF JOURNAL BOXES AT CORRESPONDING SIDE FRAME ENDS, TWO PAIRS OF ROAD WHEELS WITH EACH PAIR MOUNTED ON A RESPECTIVE AXLE, A TRANSVERSE LOAD SUPPORTING BOLSTER HAVING ITS ENDS DISPOSED IN THEIR RESPECTIVE SISE FRAME GAPS AND GUIDED FOR VERTICAL MOVEMENT BY THE SAID VERTICAL SIDE FACES, AND A PAIR OF COMBINATION SPRINGS EACH INTERPOSED BETWEEN A
Claim 2
Dependent Claim
179 words
IN A RAILWAY TRUCK A RIGID TRUCK FRAME HAVING A TRUCK FRAME CENTRAL VERTICAL AXIS AND COMPRISING TWO SPACED SUBSTANTIALLY PARALLEL SIDE FRAME MEMBERS EACH HAVING A RESPECTIVE SIDE FRAME CENTRAL VERTICAL AXIS, AND EACH FORMED AT LEAST APPROXIMATELY CENTRALLY OF ITS LENGTH WITH A RESPECTIVE OPEN-TOPPED GAP HAVING GENERALLY VERTICAL SIDE FACES AND A HORIZONTAL BOTTOM FACE WITH THE BOTTOM FACE LOCATED INTERMEDIATELY OF THE DEPTH OF THE CORRESPONDING SIDE MEMBER, A JOURNAL BOX MOUNTED AT EACH END OF EACH SIDE FRAME MEMBER FOR VERTICAL MOVEMENT RELATIVE THERETO, RESILIENT MEANS INTERPOSED BETWEEN EACH JOURNAL BOX AND THE RESPECTIVE FRAME END FOR RESILIENTLY CONTROLLING THE MOVEMENT OF THE JOURNAL BOX IN THE FRAME, TWO AXLES EACH ROTATABLY MOUNTED IN A CORRESPONDING PAIR OF JOURNAL BOXES AT CORRESPONDING SIDE FRAME ENDS, TWO PAIRS OF ROAD WHEELS WITH EACH PAIR MOUNTED ON A RESPECTIVE AXLE, A TRANSVERSE LOAD SUPPORTING BOLSTER HAVING ITS ENDS DISPOSED IN THEIR RESPECTIVE SISE FRAME GAPS AND GUIDED FOR VERTICAL MOVEMENT BY THE SAID VERTICAL SIDE FACES, AND A PAIR OF COMBINATION SPRINGS EACH INTERPOSED BETWEEN A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |