US3704670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing high speed railway trucks
Assignee: ArcelorMittal Dofasco Inc
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Filing: 1970-01-14
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Granted: 1972-12-05
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Expires: 1990-01-14
Abstract
Abstract A railway vehicle has a bolster interposed between the truck and the car body, the bolster comprising upper and lower parts. The upper bolster part mounts the vehicle body for vertical springing movement only; an articulated linkage alternatively connects the two bolster parts or the truck frame and the lower bolster part for lateral arcuate movement about a longitudinal tilting axis under the action of motors; means permitting pivoting of the body on the truck is provided alternatively respectively between the truck frame and the lower bolster part or between the two bolster members. When the pivoting is between the truck frame and the bolster the truck pivot is maintained automatically centered by motor means opposing the centrifugal forces. In a complete system wherein the vehicle body is tilted automatically detectors measure the curvature of the track and the tilting of the truck and control the tilting of the vehicle body.
Inventors
- 👤 Richard N Dobson
- 👤 Kenneth E Boyce
- 👤 John A Gaiser
- 👤 Conrad David Gris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:22
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/14; B61F5/142; B61F5/22; B61F5/24
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
178 words
A railway truck comprising a truck frame member constituted by transversely spaced side frames and transom means extending between and connecting the said side Frames; at least two wheel and axle assemblies mounted by the frame member and on which the truck runs; bolster means mounted by the frame member and adapted to support a vehicle body thereon for pivoting and tilting movement relative thereto, the said bolster means comprising an upper bolster member and a lower bolster member, spring mounting means on the upper bolster member for mounting the vehicle body for generally vertical springing movement relative thereto, pivotal mounting means connecting the lower bolster member and the frame member for pivoting movement about a generally vertical pivot axis, link connecting means pivotally connected to the upper and lower bolster members and connecting the said members for lateral, arcuate movement of the upper member relative to the lower member abut a longitudinal tilting axis of the frame member; and motor means means connected between the linkconnected members and operative to produce the said lateral, arcuate movement therebetween.
Claim 2
Dependent Claim
178 words
A railway truck comprising a truck frame member constituted by transversely spaced side frames and transom means extending between and connecting the said side Frames; at least two wheel and axle assemblies mounted by the frame member and on which the truck runs; bolster means mounted by the frame member and adapted to support a vehicle body thereon for pivoting and tilting movement relative thereto, the said bolster means comprising an upper bolster member and a lower bolster member, spring mounting means on the upper bolster member for mounting the vehicle body for generally vertical springing movement relative thereto, pivotal mounting means connecting the lower bolster member and the frame member for pivoting movement about a generally vertical pivot axis, link connecting means pivotally connected to the upper and lower bolster members and connecting the said members for lateral, arcuate movement of the upper member relative to the lower member abut a longitudinal tilting axis of the frame member; and motor means means connected between the linkconnected members and operative to produce the said lateral, arcuate movement therebetween.
Claim 3
Dependent Claim
52 words
A truck as claimed in claim 1, characterized in that the said cooperating pivotal mounting means comprise four resilient suspension units disposed in two laterally spaced pairs, each pair mounting a respective side of the lower bolster member on the truck frame, the axes of the said units being disposed generally vertical.
Claim 4
Dependent Claim
76 words
A truck as claimed in claim 1, wherein the spring means mounting the vehicle body on the upper bolster member comprise two laterally spaced air springs disposed diametrically on opposite sides of the pivot axis and interposed between the upper bolster member and the body to provide vertical springing motion of the body relative to the truck, and lateral link means connected between the upper bolster member and the body for constraining relative lateral displacement thereof.
Claim 5
Dependent Claim
55 words
A truck as claimed in claim 1, wherein the said link connecting means comprise two laterally spaced links disposed on diametrically opposite sides of the pivot axis, and interconnecting link means connected to said laterally spaced links and constraining them for corresponding pivoting movement in response to lateral movement of the said interconnecting link means.
Claim 6
Dependent Claim
62 words
A truck as claimed in claim 4, wherein each of said laterally spaced link means comprises a bell-crank shaped link pivotally connected about its crank axis to the lower bolster member and having the said interconnecting link means pivotally connected to one crank arm thereof, and a depending link pivotally connnected to the other crank arm and to the upper bolster member.
Claim 7
Dependent Claim
44 words
A truck as claimed in claim 4, wherein the lower bolster member has portions thereof extending above corresponding portions of the upper bolster member and the upper bolster member is suspended by the said laterally spaced link connecting means from the lower bolster member.
Claim 8
Dependent Claim
37 words
A truck as claimed in claim 4, and comprising subsidiary link means connecting said interconnecting link means and the upper bolster member and constraining the interconnecting link means for lateral movement upon operation of the motor means.
Claim 9
Dependent Claim
43 words
A truck as claimed in claim 7, characterized in that said subsidiary link means comprise a depending link connected to the upper bolster member, and an intervening laterally extending link member pivotally connected to the said depending link and said interconnecting link means.
Claim 10
Dependent Claim
45 words
A truck as claimed in claim 1, wherein the said cooperating pivotal mounting means comprises a pivot member mounted for lateral movement relative to the truck frame by opposed longitudinally extending resilient suspension units having their compression axes coincident and disposed longitudinally of the truck.
Claim 11
Dependent Claim
52 words
A truck as claimed in claim 9, characterized in that the said cooperating pivotal mounting means comprise four resilient suspension units disposed in two laterally spaced pairs, each pair mounting a respective side of the lower bolster member on the truck frame, the axes of the said units being disposed generally vertical.
Claim 12
Dependent Claim
180 words
A railway truck comprising a truck frame member constituted by transversely spaced side frames and transom means extending between and connecting the said side frames; at least two wheel axle assemblies mounted by the frame member and on which the truck runs; bolster means mounted by the frame member and adapted to support a vehicle body thereon for pivoting and tilting movement relative thereto, the said bolster means comprising an upper bolster member and a lower bolster member, spring mounting means on the upper bolster member for mounting the vehicle body for generally vertical springing movement relative thereto, pivotal mounting means connecting the upper and lower bolster members for pivoting movement about a generally vertical pivot axis, and link connecting means pivotally connected to the lower bolster member and the frame member and connecting the lower bolster member for lateral, arcuate movement relative to the frame member about a longitudinal tilting axis of the frame member; and motor means connected between the link-connected members and operative upon actuation of the motor means to produce the said lateral, arcuate movement therebetween.
Claim 13
Dependent Claim
180 words
A railway truck comprising a truck frame member constituted by transversely spaced side frames and transom means extending between and connecting the said side frames; at least two wheel axle assemblies mounted by the frame member and on which the truck runs; bolster means mounted by the frame member and adapted to support a vehicle body thereon for pivoting and tilting movement relative thereto, the said bolster means comprising an upper bolster member and a lower bolster member, spring mounting means on the upper bolster member for mounting the vehicle body for generally vertical springing movement relative thereto, pivotal mounting means connecting the upper and lower bolster members for pivoting movement about a generally vertical pivot axis, and link connecting means pivotally connected to the lower bolster member and the frame member and connecting the lower bolster member for lateral, arcuate movement relative to the frame member about a longitudinal tilting axis of the frame member; and motor means connected between the link-connected members and operative upon actuation of the motor means to produce the said lateral, arcuate movement therebetween.
Claim 14
Dependent Claim
53 words
A truck as claimed in claim 11, characterized in that the said cooperating pivotal mounting means comprise four resilient suspension units disposed in two laterally spaced pairs, each pair mounting a respective side of the respective bolster member on the other bolster member, the axes of the said units being disposed generally vertical.
Claim 15
Dependent Claim
76 words
A truck as claimed in claim 11, wherein the spring means mounting the vehicle body on the upper bolster member comprise two laterally spaced air springs disposed diametrically on opposite sides of the pivot axis and interposed between the upper bolster member and the body to provide vertical springing motion of the body relative to the truck, and lateral link means connected between the upper bolster member and the body for constraining relative lateral displacement thereof.
Claim 16
Dependent Claim
54 words
A truck as claimed in claim 11, wherein the said link connecting means comprise two laterally spaced links disposed on diametrically opposite sides of the pivot axis, and interconnecting link means connected to said laterally spaced links and constraining them for corresponding pivoting movement in response to lateral movement of the interconnecting link means.
Claim 17
Dependent Claim
61 words
A truck as claimed in claim 14, wherein each of said laterally spaced link means comprises a bell-crank shaped link pivotally connected about its crank axis to the truck frame and having the said interconnecting link means pivotally connected to one crank arm thereof, and a depending link pivotally connected to the other crank arm and to the lower bolster member.
Claim 18
Dependent Claim
42 words
A truck as claimed in claim 14, wherein the truck frame has portions thereof extending above corresponding portions of the lower bolster member and the lower bolster member is suspended by the said laterally spaced link connecting means from the truck frame.
Claim 19
Dependent Claim
37 words
A truck as claimed in claim 14, and comprising subsidiary link means connecting said interconnecting link means and the lower bolster member and constraining the interconnecting link means for lateral movement upon operation of the motor means.
Claim 20
Dependent Claim
43 words
A truck as claimed in claim 17, characterized in that said subsidiary link means comprise a depending link connected to the lower bolster member, and an intervening laterally extending link member pivotally connected to the said depending link and said interconnecting link means.
Claim 21
Dependent Claim
49 words
A truck as claimed in claim 1, wherein the said cooperating pivot means comprises a pivot member mounted on its respective bolster member for lateral movement relative to the truck frame by opposed longitudinally extending resilient suspension units having their compression axes coincident and disposed longitudinally of the truck.
Claim 22
Dependent Claim
53 words
A truck as claimed in claim 19, characterized in that the said cooperating pivotal mounting means comprise four resilient suspension units disPosed in two laterally spaced pairs, each pair mounting a respective side of the respective bolster member on the other bolster member, the axes of the said units being disposed generally vertical.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |