US3696757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dampened railway car truck
Assignee: British Railways Board
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Filing: 1971-03-31
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Granted: 1972-10-10
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Expires: 1991-03-31
Abstract
Abstract A railway train having articulated vehicle bodies. A steering beam spans across each two adjacent vehicle bodies. Each beam is vertically pivoted or ball-jointed at points along the longitudinal center line of the adjacent vehicle bodies at some distance from the end of each vehicle body. The steering beam acts as a structure to which a suspension unit (bogie truck) is attached. The suspension unit is attached to the beam in a manner which permits the suspension unit to rotate in yaw about a vertical axis. The yaw rotation may be accomplished either freely or against the restraint of springs, viscous dampers or friction devices.
Inventors
- 👤 Michael Newman
- 👤 David Boocock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
B; B61; B61F; B61F3/00; B61F3/12; B61F3/125; B61F5/00; B61F5/26; B61F5/30; B61F5/32; B61F5/325
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A railway train comprising: a. at least two vehicle bodies articulated at their adjacent ends to restrain relative lateral displacement therebetween but to permit relative angular displacement therebetween. b. a rigid beam connected at its ends to the two vehicle bodies at a distance longitudinally of the vehicle bodies from their articulated connection with each other and in a manner permitting said relative angular displacement of said vehicle bodies, and c. a suspension unit including at least two wheelsets, the suspension unit being attached to said beam in the region of the mid-length of said beam in a manner which permits it to yaw relatively to said beam about a vertical axis between the wheelsets.
Claim 2
Dependent Claim
115 words
A railway train comprising: a. at least two vehicle bodies articulated at their adjacent ends to restrain relative lateral displacement therebetween but to permit relative angular displacement therebetween. b. a rigid beam connected at its ends to the two vehicle bodies at a distance longitudinally of the vehicle bodies from their articulated connection with each other and in a manner permitting said relative angular displacement of said vehicle bodies, and c. a suspension unit including at least two wheelsets, the suspension unit being attached to said beam in the region of the mid-length of said beam in a manner which permits it to yaw relatively to said beam about a vertical axis between the wheelsets.
Claim 3
Dependent Claim
28 words
A railway train according to claim 1, wherein said vertical axis passes through the articulation point of the vehicle bodies, when the vehicle bodies are on straight track.
Claim 4
Dependent Claim
48 words
A railway train according to claim 1, wherein said suspension unit comprises a frame in which are mounted at least two wheelsets, said frame being pivotally connected to said rigid beam through a yaw suspension for rotation against the restraint of said yaw suspension about said vertical axis.
Claim 5
Dependent Claim
33 words
A railway train as claimed in claim 3, wherein said wheelsets are mounted in said frame through a further yaw suspension permitting a restrained yawing movement of said wheelsets relatively to said frame.
Claim 6
Dependent Claim
135 words
A railway train as claimed in claim 1, wherein said suspension unit comprises an intermediate frame connected to said steering beam through a lateral suspension arrangement, a first end frame carrying a first wheelset and connected at one end to one end Of the intermediate frame and at its other end to said beam through a yaw suspension so that it can yaw relatively to said beam and the intermediate frame and a second end frame connected at one end to the other end of said intermediate frame and at its other end to said beam through a yaw suspension so that it can yaw relatively to said beam and the intermediate frame, said intermediate frame being connected to said end frames so that it is restrained from lateral movement relative to said end frames.
Claim 7
Dependent Claim
110 words
A railway train comprising: a. at least two vehicle bodies articulated at their adjacent ends to restrain relative lateral displacement therebetween but to permit relative angular displacement therebetween, b. a rigid beam connected at its ends to the two vehicle bodies at a distance longitudinally of the vehicle bodies from their articulated connection with each other and in a manner permitting said relative angular displacement of said vehicle bodies, c. at least two wheelsets located in the region of the mid-length of said beam, and d. a yaw suspension through which said wheelsets are mounted to said beam and which restrains said wheelsets against angular movements in a horizontal plane.
Claim 8
Dependent Claim
110 words
A railway train comprising: a. at least two vehicle bodies articulated at their adjacent ends to restrain relative lateral displacement therebetween but to permit relative angular displacement therebetween, b. a rigid beam connected at its ends to the two vehicle bodies at a distance longitudinally of the vehicle bodies from their articulated connection with each other and in a manner permitting said relative angular displacement of said vehicle bodies, c. at least two wheelsets located in the region of the mid-length of said beam, and d. a yaw suspension through which said wheelsets are mounted to said beam and which restrains said wheelsets against angular movements in a horizontal plane.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |