US3707928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical railway spring suspension system
Assignee: ThyssenKrupp Budd Co
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Filing: 1970-10-28
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Granted: 1973-01-02
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Expires: 1990-10-28
Abstract
Abstract A vertical spring suspension system for transmitting loads from a carbody to a wheel-axle truck. The suspension system includes opposed leaf springs secured to opposite sides of the carbody which extend diagonally beneath the center portion of the carbody to rest on journals which support the wheel-axle unit for rotation. Roller means are provided between the lower ends of the leaf springs and the journals to enable relative movement between the ends of the springs and the truck.
Inventors
- 👤 J Germer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:42
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/26; B61F5/30; B61F5/301; B61F5/302
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A spring suspension system for supporting a carbody on the frame of a wheel-truck movable along a track, means mounting said truck to said carbody, first elongated spring means having an upper portion secured to one side of said carbody and including an intermediate portion extending transversely beneath the carbody and terminating in a lower portion lying beneath the opposite side of said carbody, second elongated spring means having a top portion secured to said opposite side of said carbody and including an intermediate portion extending beneath said carbody and crossing said intermediate portion of said first spring means with a lower portion lying beneath said one side of said carbody, and slide means engaging said lower portions of said first and said second spring means and said frame of said truck to enable relative sliding movement therebetween.
Claim 2
Dependent Claim
138 words
A spring suspension system for supporting a carbody on the frame of a wheel-truck movable along a track, means mounting said truck to said carbody, first elongated spring means having an upper portion secured to one side of said carbody and including an intermediate portion extending transversely beneath the carbody and terminating in a lower portion lying beneath the opposite side of said carbody, second elongated spring means having a top portion secured to said opposite side of said carbody and including an intermediate portion extending beneath said carbody and crossing said intermediate portion of said first spring means with a lower portion lying beneath said one side of said carbody, and slide means engaging said lower portions of said first and said second spring means and said frame of said truck to enable relative sliding movement therebetween.
Claim 3
Dependent Claim
37 words
In the spring suspension system as set forth in claim 1 wherein said slide means include roller means interposed between said lower portion of said first and said second spring means and said frame of said truck.
Claim 4
Dependent Claim
42 words
In the spring suspension system as set forth in claim 2 wherein said roller means are secured to said lower portions of said first and said second spring means and said frame of said truck includes guide means for said roller means.
Claim 5
Dependent Claim
31 words
In the spring suspension system as set forth in claim 2 wherein said roller means include spherical bearing means to enable yawing movements of said spring means relative to said truck.
Claim 6
Dependent Claim
33 words
In the spring suspension system as set forth in claim 2 wherein said intermediate portion of said first and said second spring means are offset relative to their respective top and bottom portions.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |