US4278029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient railway car truck suspension
Assignee: Bombardier Corp
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Filing: 1979-08-01
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Granted: 1981-07-14
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Expires: 1999-08-01
Abstract
Abstract A primary suspension system is disposed between the axle on journal bearings and the sideframe of a truck. Flexible means, secured to the sideframe, extends around and is spaced from the axle on journal bearings. A circular structure supports the axle and journal bearings, and includes a portion extending radially away from the axis of said axle into the center of said flexible means and is attached to two spaced surfaces which also extend radially away from the axis of the axle.
Inventors
- 👤 Walter S. Eggert, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:04
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/26; B61F5/30; B61F5/305; B61F5/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
In a railway car having a truck with a sideframe for receiving an axle disposed to ride on journal bearings, a primary suspension system disposed between said axle on journal bearings and said sideframe comprising: (a) means for attaching said primary suspension system on said side frame, (b) flexible support means secured to said attaching means, (c) radial support structure spaced from said journal bearings and having a surface resiliently supported on a journal support of said journal bearings, (d) said flexible support means having a portion secured to said radial support structure for flexibly supporting said side frame on said axle having said flexible support means in shear.
Claim 2
Dependent Claim
109 words
In a railway car having a truck with a sideframe for receiving an axle disposed to ride on journal bearings, a primary suspension system disposed between said axle on journal bearings and said sideframe comprising: (a) means for attaching said primary suspension system on said side frame, (b) flexible support means secured to said attaching means, (c) radial support structure spaced from said journal bearings and having a surface resiliently supported on a journal support of said journal bearings, (d) said flexible support means having a portion secured to said radial support structure for flexibly supporting said side frame on said axle having said flexible support means in shear.
Claim 3
Dependent Claim
22 words
A primary suspension system as set forth in claim 1 wherein said flexible support means comprises a pair of spaced flexible rings.
Claim 4
Dependent Claim
30 words
A primary suspension system as set forth in claim 2 wherein said flexible rings are secured between said sideframe and said support structure and disposed to be freely vertically deflected.
Claim 5
Dependent Claim
19 words
A primary suspension system as set forth in claim 3 wherein said flexible rings are of substantially equal thicknesses.
Claim 6
Dependent Claim
47 words
A primary suspension system as set forth in claim 4 wherein the inner and outer diameters of said flexible rings are asymmetrical with respect to the axis of said axle so that said flexible rings are wider in the area above said axle than below said axle.
Claim 7
Dependent Claim
28 words
A primary suspension system as set forth in claim 5 wherein a pair of indexing pins extend into said support structure to maintain said flexible rings in position.
Claim 8
Dependent Claim
40 words
A primary suspension system as set forth in claim 6 wherein said radial support structure includes a main section surrounding said axle and journal bearings, with said portion being integral with said main section and extending around said main section.
Claim 9
Dependent Claim
24 words
A primary suspension system as set forth in claim 7 wherein said flexible means maintains said axle and journal bearings spaced from said sideframe.
Claim 10
Dependent Claim
30 words
A primary suspension system as set forth in claim 8 wherein a connecting flexible ring is disposed between said journal bearings and said extending portion of said radial support structure.
Claim 11
Dependent Claim
27 words
A primary suspension system as set forth in claim 9 wherein said attaching means include support elements connected between said pair of flexible rings and said sideframe.
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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |