Patent US3687085A successfully refreshed from Google Patents.
US3687085A
Expired / Lapsed
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Lateral motion truck
Assignee: British Railways Board
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Filing: 1970-10-05
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Granted: 1972-08-29
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Expires: 1990-10-05
Abstract
Abstract A railway vehicle including at least one wheelset connected to a vehicle body by way of a lateral suspension arranged to allow said wheelset and its supporting structure to yaw relative to said body, the suspension including a pair of parallel load bearing arms extending longitudinally of the vehicle pivotally connected at one end to the wheelset supporting structure and at the other end to the ends of a transverse member secured to said vehicle body so as to be free to yaw relative thereto, the said arms together with the wheelset and the transverse member forming in plan view a variable parallelogram linkage permitting lateral and yawing movement of the wheelset and its supporting structure relative to the vehicle body.
Inventors
- 👤 Michael Newman
- 👤 David Boocock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:13
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/38
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
151 words
A railway vehicle including, at least one wheelset, suspension means connecting said wheelset to a body portion of the vehicle by way of a lateral suspension arranged in a manner to allow said wheelset and its supporting structure to yaw relative to said body, the suspension including a pair of parallel vertical load bearing arms extending longitudinally of the vehicle from one side of the wheelset, each said arm being pivotally connected at one end to said wheelset supporting structure and at the other end to the respective end of a transverse member secured to said vehicle body so as to be free to yaw relative thereto, the said arms together with the wheelset and the transverse member forming in plan view a variable parallelogram linkage permitting lateral and yawing movement of the wheelset and its supporting structure relative to the vehicle body, and means to restrain said lateral yawing movement.
Claim 2
Dependent Claim
151 words
A railway vehicle including, at least one wheelset, suspension means connecting said wheelset to a body portion of the vehicle by way of a lateral suspension arranged in a manner to allow said wheelset and its supporting structure to yaw relative to said body, the suspension including a pair of parallel vertical load bearing arms extending longitudinally of the vehicle from one side of the wheelset, each said arm being pivotally connected at one end to said wheelset supporting structure and at the other end to the respective end of a transverse member secured to said vehicle body so as to be free to yaw relative thereto, the said arms together with the wheelset and the transverse member forming in plan view a variable parallelogram linkage permitting lateral and yawing movement of the wheelset and its supporting structure relative to the vehicle body, and means to restrain said lateral yawing movement.
Claim 3
Dependent Claim
33 words
A railway vehicle as claimed in claim 1 wherein the connection between each of said load bearing arms and the wheelset supporting structure is such as to allow only relative horizontal movements therebetween.
Claim 4
Dependent Claim
25 words
A railway vehicle as claimed in claim 1 wherein said wheelset supporting structure includes a frame member extending transversely across the ends of the wheelset.
Claim 5
Dependent Claim
18 words
A railway vehicle as claimed in claim 1 wherein said lateral suspension also includes vertically extending swing links.
Claim 6
Dependent Claim
50 words
A railway vehicle as claimed in claim 1 wherein the vehicle body is supported at one end on a pair of wheelsets, and the transverse members associated therewith are pivotally mounted on the body, each pair of load bearing arms extending longitudinally from each transverse member to its associated wheelset.
Claim 7
Dependent Claim
82 words
A railway vehicle as claimed in claim 5 wherein the suspension means connects the wheelset to two adjacent vehicle bodies and wherein a rigid beam extends across the connection between the two adjacent bodies and is connected at its ends to the vehicle bodies at a distance longitudinally of the vehicle bodies from their interconnection with each other, wherein all the connections between said wheelset supporting structures and their associated lateral and yaw suspension, and the body being made through said beam.
Claim 8
Dependent Claim
37 words
A railway vehicle as claimed in claim 6 wherein a yaw restraint is connected between each transverse member and the beam or so as to control the yawing motions of said transverse members relative to Said beam.
Claim 9
Dependent Claim
21 words
A railway vehicle as claimed in claim 7 wherein said yaw restraint comprises a damper and a spring connected in series.
Claim 10
Dependent Claim
32 words
A railway vehicle as claimed in claim 8 wherein said intermediate frame is connected to said wheelset supporting structures at each end thereof by connecting means which prevent relative lateral movement therebetween.
Claim 11
Dependent Claim
27 words
A railway vehicle as claimed in claim 9 wherein said intermediate frame is connected to each of said wheelset supporting structures by a laterally extending tie rod.
Claim 12
Dependent Claim
32 words
A railway vehicle as claimed in claim 10 wherein each of said tie rods is arranged in the vertical plane extending through the axis of the wheel axle of the respective wheelset.
Claim 13
Dependent Claim
71 words
A railway vehicle as claimed in claim 6 wherein an intermediate frame is provided interconnecting said two wheelset supporting structures and supported thereon in a manner which permits movement of the wheelsets in yaw longitudinally of the vehicle relative to the intermediate frame, and a secondary frame mounted on said intermediate frame through a lateral suspension and wherein vertical load bearing means are connected between said secondary frame and said body.
Claim 14
Dependent Claim
23 words
A railway vehicle as claimed in claim 12 wherein said intermediate frame is supported on said wheelset supporting structures by vertical pivoted links.
Claim 15
Dependent Claim
22 words
A railway vehicle as claimed in claim 12 wherein said lateral suspension between said intermediate and secondary frames comprise vertical swing links.
Claim 16
Dependent Claim
20 words
A railway vehicle as claimed in claim 12 wherein said vertical load bearing means includes a vertically acting resilient member.
Claim 17
Dependent Claim
39 words
A railway vehicle as claimed in claim 12 wherein said secondary frame is tied to said vehicle body so as to be movable vertically and in a yawing motion relative thereto, movements longitudinally and laterally relative thereto being prevented.
Claim 18
Dependent Claim
27 words
A railway vehicle as claimed in claim 12 wherein a damper is arranged to damp out any relative lateral movements between the intermediate frame and the body.
Claim 19
Dependent Claim
25 words
A railway vehicle as claimed in claim 12 wherein yaw restraining springs are arranged between each of said wheelset supporting structures and the intermediate frame.
Claim 20
Dependent Claim
29 words
A railway vehicle as claimed in claim 12 wherein stop means are provided to limit the angle of yaw of the wheelset supporting structures relative to the intermediate frame.
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |