US3695186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lateral car stabilizing system
Assignee: ThyssenKrupp Budd Co
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Filing: 1970-07-06
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Granted: 1972-10-03
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Expires: 1990-07-06
Abstract
Abstract A lateral stabilizing suspension control system for counteracting lateral unbalancing forces against a railcar includes air springs responsive to such unbalancing forces. Pressurized fluid is applied to or released from the air springs to counteract the unbalancing forces. Means are also provided to assure that the total pressure in the air springs is relatively constant to provide a uniform spring rate during operation.
Inventors
- 👤 James M Herring Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A lateral suspension control system for a car body carried by a truck comprising first and second air springs disposed between said car body and said truck, a reservoir for supplying pressurized fluid to said air springs, first and second valve mechanisms for connecting said first and second air springs, respectively, to either said reservoir or to an exhaust vent, means for simultaneously actuating both said first and second valves in accordance with the relative lateral movement between said car body and said truck to connect said first and second air springs either to said reservoir or to said exhaust vent to vary the pressures in said first and second air springs to counteract lateral forces tending to produce relative movement between said car body and said truck, and means connected to said second valve mechanism to maintain the total pressures in said first and second air springs constant during operation.
Claim 2
Dependent Claim
151 words
A lateral suspension control system for a car body carried by a truck comprising first and second air springs disposed between said car body and said truck, a reservoir for supplying pressurized fluid to said air springs, first and second valve mechanisms for connecting said first and second air springs, respectively, to either said reservoir or to an exhaust vent, means for simultaneously actuating both said first and second valves in accordance with the relative lateral movement between said car body and said truck to connect said first and second air springs either to said reservoir or to said exhaust vent to vary the pressures in said first and second air springs to counteract lateral forces tending to produce relative movement between said car body and said truck, and means connected to said second valve mechanism to maintain the total pressures in said first and second air springs constant during operation.
Claim 3
Dependent Claim
43 words
A lateral suspension control system as set forth in claim 1 wherein said first and second valve mechanisms each comprise a cylindrical housing having a pair of reciprocating pistons therein for blocking or unblocking ports leading to said reservoir or said exhaust vent.
Claim 4
Dependent Claim
33 words
A lateral suspension control system as set forth in claim 2 wherein means are provided to delay the movement of said pistons until actuating elements for said pistons have moved beyond predetermined distances.
Claim 5
Dependent Claim
28 words
The invention as set forth in claim 3 wherein said means to delay the movement of said pistons include said actuating elements disposed within chambers of said pistons.
Claim 6
Dependent Claim
38 words
A lateral suspension control system as set forth in claim 2 wherein said means connected to second valve includes three chambers for received pressurized fluid from said first air spring, said second air spring and said reservoir, respectively.
Claim 7
Dependent Claim
27 words
A lateral suspension control system as set forth in claim 5 wherein said second valve mechanism includes means for controlling the pressure within said second air spring.
Claim 8
Dependent Claim
47 words
A lateral suspension control system as set forth in claim 6 wherein a common control element is provided in said second valve mechanism for controlling the pressure in said second air spring and for maintaining the total pressure in said first and second air springs relatively constant.
Claim 9
Dependent Claim
25 words
A lateral suspension control system as set forth in claim 7 wherein means are provided to bias said common element to a normally neutral position.
Claim 10
Dependent Claim
47 words
A lateral suspension control system as set forth in claim 8 wherein said common element in Said second valve mechanism extends through said three chambers and is connected to control the operation of said pair of reciprocating pistons within the cylindrical housing of said second valve mechanism.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |