US4539912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Car bridging arrangement for high speed railway vehicles
Assignee: AEG Schienenfahrzeuge Nahverkehr und Wagen GmbH
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Filing: 1982-06-09
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Granted: 1985-09-10
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Expires: 2002-06-09
Abstract
Abstract An arrangement for bridging adjacent cars in high speed railway vehicles posed of an inflatable chamber bellows section which extends entirely or partially about the outer structure of the cars wherein the stiffness of the bellows section may be automatically adjusted to respective requirements of high speed travel and travel through curves in such a manner that the internal pressure in the chambers of the bellows section which is produced by inflating the section is controlled in a stepless manner or in individual steps by a control system supplied with fluid pressure through the compressed air system of the vehicle or from a compressor.
Inventors
- 👤 Helmut Hassel
- 👤 Reimund Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:53
CPC Classifications
B; B60; B60D; B60D5/00; B60D5/006; B61; B61D; B61D17/00; B61D17/04; B61D17/20; B61D17/22
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
136 words
A system for joining adjacent cars of a railway vehicle to provide an aerodynamically advantageous smooth outer surface therefor comprising: inflatable chamber bellows means extending essentially about the outer structure of the vehicle between the ends of adjacent cars, said bellows means being structured to define fluid-tight internal pressure chamber means capable of being pressurized to effect inflation of said bellows means; fluid pressure source means for supplying fluid pressure to said chamber means; and system control means responsive to operating characteristics of said railway vehicle for controlling the supply of fluid pressure to said internal pressure chamber means from said fluid pressure source means in order to regulate the fluid pressure levels therein thereby to adjust physical characteristics of said inflatable chamber bellows means in accordance with changes in the operating characteristics of said vehicle.
Claim 2
Independent Claim
136 words
A system for joining adjacent cars of a railway vehicle to provide an aerodynamically advantageous smooth outer surface therefor comprising: inflatable chamber bellows means extending essentially about the outer structure of the vehicle between the ends of adjacent cars, said bellows means being structured to define fluid-tight internal pressure chamber means capable of being pressurized to effect inflation of said bellows means; fluid pressure source means for supplying fluid pressure to said chamber means; and system control means responsive to operating characteristics of said railway vehicle for controlling the supply of fluid pressure to said internal pressure chamber means from said fluid pressure source means in order to regulate the fluid pressure levels therein thereby to adjust physical characteristics of said inflatable chamber bellows means in accordance with changes in the operating characteristics of said vehicle.
Claim 3
Dependent Claim
17 words
A system according to claim 1 wherein said fluid pressure supply is controlled in a stepless manner.
Claim 4
Dependent Claim
17 words
A system according to claim 1 wherein said fluid pressure supply is controlled in a step-by-step manner.
Claim 5
Dependent Claim
18 words
A system according to claim 1 wherein said internal pressure chamber means comprise a single internal pressure chamber.
Claim 6
Dependent Claim
19 words
A system according to claim 1 wherein said internal pressure chamber means comprise a plurality of internal pressure chambers.
Claim 7
Dependent Claim
20 words
A system according to claim 1 wherein said fluid pressure source means comprise a compressed air system of said vehicle.
Claim 8
Dependent Claim
20 words
A system according to claim 1 wherein said fluid pressure source means comprise a separate air compressor for said system.
Claim 9
Dependent Claim
50 words
A system according to claim 1 wherein said inflatable chamber bellows means comprise stiffening ribs arranged within said bellows means and configured in such a manner that said bellows means is made softer in the direction of travel as opposed to directions transversely thereof and forms a smooth outer surface.
Claim 10
Dependent Claim
55 words
A system according to claim 5 wherein said plurality of chambers include a first fluid pressure chamber located at a fastening connection of said bellows means whereby said bellows means is attached to said car, said first fluid pressure chamber being separately supplied with fluid pressure through a pressure regulator with an adjustable constant pressure.
Claim 11
Dependent Claim
39 words
A system according to claim 5 or 9 wherein said system control means operate to supply and maintain a given pressure in each of said chambers in said bellows means by means of separate pressure regulators and position regulators.
Claim 12
Dependent Claim
39 words
A system according to claim 1 wherein said system control means includes a pressure converter operating in accordance with the speed of said vehicle and operatively arranged with said fluid pressure source means in front of said bellows means.
Claim 13
Dependent Claim
39 words
A system according to claim 9 wherein said control system means include a pressure reducing valve arranged in a compressed air supply line of said fluid pressure source means for said first fluid pressure chamber of said bellows means.
Claim 14
Dependent Claim
42 words
A system according to claim 1 wherein said control system means includes a pulse generator controlled by a tachometer generator or by a brake control system of said vehicle for automatic control and adjustment of the fluid pressure in said bellows means.
Claim 15
Dependent Claim
16 words
A system according to claim 8 wherein said stiffening ribs are formed with different cross-sectional thicknesses.
Claim 16
Dependent Claim
31 words
A system according to claim 1 wherein said control system means include an analog converter system with an impedance converter being integrated in a control section of said analog converter system.
Claim 17
Dependent Claim
26 words
A system according to claim 1 wherein electronic circuit means for providing a discrete formation of an input signal is integrated into said control system means.
Claim 18
Dependent Claim
44 words
A system according to claim 1 wherein said system control means is responsive to the speed of said vehicle and operates to control said fluid pressure to change the stiffness of said inflatable chamber bellows means in accordance with changes in said vehicle speed.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |