US3693553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized railway locomotive truck
Assignee: GSI ENGINEERING Inc A CORP OF
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Filing: 1970-03-03
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Granted: 1972-09-26
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Expires: 1990-03-03
Abstract
Abstract A multiple axle railway locomotive truck includes a rigid truck frame spring supported on the axles, and a bolster formed with a plurality of upwardly facing nonresilient body supporting surfaces spaced apart longitudinally and transversely of the bolster, the bolster being supported on the truck frame at each side by a pair of elastomeric pad devices each of which is upwardly and inwardly inclined longitudinally of the truck so that their normals converge at a low level, preferably at that of the rail, the combination of the longitudinal spacing of the body supports and the rail-level convergence of the pad normals ensuring elimination of weight transference resulting from tractive forces. Preferably all motor reaction connections to the truck frame are in the same direction longitudinally of the truck from the respective axles whereby to eliminate axle-to-axle weight transference resulting from opposite motor reactions on the truck frame.
Inventors
- 👤 Richard L Lich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:38
CPC Classifications
B; B61; B61F; B61F3/00; B61F3/02; B61F3/04; B61F3/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
In a railway locomotive power truck having at least two wheeled axles spaced apart lengthwise of the truck, a rigid frame resiliently supported on said axles, a pair of upwardly facing surfaces on each side of said frames inclined upwardly toward each other longitudinally of the truck, elastomeric pad devices seated on said frame inclined surfaces, said surfaces being spaced from each other longitudinally of the truck such that the normals of said pad devices converge at a substantially lower level than said axles, a bolster having downwardly facing surfaces parallel to said frame upwardly facing surfaces and seated on said pad devices, said pad devices forming the sole support of said bolster on said truck frame and the sole means for transmitting longitudinal forces between said rigid frame and said bolster, means on said bolster for pivotally connecting said bolster to a supported underframe, and nonresilient horizontal bearing surface means on said bolster spaced apart longitudinally thereof substantially as far as said pad devices for positively preventing substantial longitudinal tilting of said bolster with respect to the supported underframe.
Claim 2
Dependent Claim
180 words
In a railway locomotive power truck having at least two wheeled axles spaced apart lengthwise of the truck, a rigid frame resiliently supported on said axles, a pair of upwardly facing surfaces on each side of said frames inclined upwardly toward each other longitudinally of the truck, elastomeric pad devices seated on said frame inclined surfaces, said surfaces being spaced from each other longitudinally of the truck such that the normals of said pad devices converge at a substantially lower level than said axles, a bolster having downwardly facing surfaces parallel to said frame upwardly facing surfaces and seated on said pad devices, said pad devices forming the sole support of said bolster on said truck frame and the sole means for transmitting longitudinal forces between said rigid frame and said bolster, means on said bolster for pivotally connecting said bolster to a supported underframe, and nonresilient horizontal bearing surface means on said bolster spaced apart longitudinally thereof substantially as far as said pad devices for positively preventing substantial longitudinal tilting of said bolster with respect to the supported underframe.
Claim 3
Dependent Claim
21 words
In a railway locomotive power truck according to claim 1, the normals of said pad devices converging substantially at rail level.
Claim 4
Dependent Claim
24 words
In a railway locomotive power truck according to claim 1, a third wheeled axle spaced from and positioned intermediate said pair of wheeled axles.
Claim 5
Dependent Claim
37 words
In a railway locomotive power truck according to claim 3, traction motors supported on said axles and all having their reaction connections to said frame in the same direction longitudinally of the truck from their respective axles.
Claim 6
Dependent Claim
35 words
In a railway locomotive power truck according to claim 3, said frame having longitudinal side members with upwardly arched portions over said middle axle, said upwardly facing inclined surfaces being on said upwardly arched portions.
Claim 7
Dependent Claim
39 words
In a railway locomotive power truck accordinG to claim 5, said bolster having a plurality of upwardly facing bearings, some of said bearings being spaced apart lengthwise of the truck and being adaptable for sliding engagement with underframe bearings.
Claim 8
Dependent Claim
24 words
In a railway locomotive power truck according to claim 1, said bearings being constructed for nonresilient engagement with opposing bearings on the supported underframe.
Claim 9
Dependent Claim
21 words
In a railway locomotive power truck according to claim 1, there being at least three of said bearings on said bolster.
Claim 10
Dependent Claim
19 words
In a railway locomotive power truck according to claim 8, there being four of said bearings on said bolster.
Claim 11
Dependent Claim
48 words
In a railway locomotive power truck according to claim 1, cooperating means on said bolster and truck frame for limiting relative longitudinal movements therebetween, said cooperating means being spaced apart longitudinally of the truck a sufficient distance to become operatively engaged only when normal traction forces are exceeded.
References Cited (Backward Citations)
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |