US3589302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear-motor-driven vehicle
Assignee: Japan National Railways
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Filing: 1969-02-18
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Granted: 1971-06-29
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Expires: 1989-02-18
Abstract
Abstract A number of electric linear-motor driving units are coupled to the bodies of cars in a train in a manner to undergo displacement relative to the bodies when the cars are traveling along a curve and are operating cooperatively with and guided by a reaction rail along a roadway, and this displacement is transmitted by a linkage to steer wheel and suspension systems on which the cars are rolling so as afford bogie action whereby the wheels can follow the roadway with minimum friction, undue stress, and power.
Inventors
- 👤 Yoshio Usami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/08; B60; B60L; B60L13/00; B60L13/03; B60L13/035; B61B13/12; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
In an electric linear-motor transportation system having a roadway and a reaction rail installed along said roadway, the combination with said reaction rail and roadway of a vehicle including a car body having a longitudinal axis, and a driving and supporting combination comprising: a first linear-motor driving device operating cooperatively with and under guidance by the reaction rail to drive said vehicle along the roadway, first coupling means connecting said driving device to said car body to cause said driving device to undergo displacement relative to said car body axis when the car travels along a curve in a roadway, a pair of support assemblies comprising a wheel and suspension system of two axle, independent-wheel construction, means coupling said car body to said suspension system to permit said independent wheels to undergo steering movement relative to said car body, and link means coupling said driving device to each said wheel and suspension system, said link means comprising a pair of rigid members, said members having inner ends pivotally connected to opposing sides of said driving device and having outer ends pivotally coupled to said respective support assemblies to cause said system to undergo appropriate steering movement in accordance with said displacement of said driving device.
Claim 2
Dependent Claim
205 words
In an electric linear-motor transportation system having a roadway and a reaction rail installed along said roadway, the combination with said reaction rail and roadway of a vehicle including a car body having a longitudinal axis, and a driving and supporting combination comprising: a first linear-motor driving device operating cooperatively with and under guidance by the reaction rail to drive said vehicle along the roadway, first coupling means connecting said driving device to said car body to cause said driving device to undergo displacement relative to said car body axis when the car travels along a curve in a roadway, a pair of support assemblies comprising a wheel and suspension system of two axle, independent-wheel construction, means coupling said car body to said suspension system to permit said independent wheels to undergo steering movement relative to said car body, and link means coupling said driving device to each said wheel and suspension system, said link means comprising a pair of rigid members, said members having inner ends pivotally connected to opposing sides of said driving device and having outer ends pivotally coupled to said respective support assemblies to cause said system to undergo appropriate steering movement in accordance with said displacement of said driving device.
Claim 3
Dependent Claim
59 words
The invention as claimed in claim 1, further comprising another said vehicle and second coupling means for connecting said other vehicle to said first driving device, wherein said first and second coupling means comprise respective pivotal means connected to adjacent ends of said respective vehicles, and wherein said first driving device comprises the driving device for said other vehicle.
Claim 4
Dependent Claim
47 words
The invention as claimed in claim 1, in which said vehicle has a pair of said driving and supporting combinations, one of said combinations disposed at one end of said car body, and the other of said combinations disposed at the other end of said car body.
Claim 5
Dependent Claim
21 words
The invention as claimed in claim 2 including a train comprising a plurality of said vehicles coupled end-to-end in a line.
Claim 6
Dependent Claim
148 words
The invention as claimed in claim 1 in which said wheel and suspension system of each vehicle comprises front left and right wheel assemblies and rear left and right wheel assemblies, and spring means connecting said wheel assemblies to said car body, and in which each wheel assembly comprises at least one wheel, and axle on which said wheel is mounted, and a four-bar linkage in a horizontal plane, a first bar of each of said 4-bar linkage is one of said rigid members, a second bar of said 4-bar linkage comprises a bar disposed perpendicularly to said axle and pivotally connected at one end to said rigid member, and third and fourth bars of said 4-bar linkage have ends pivotally coupled to said car body for pivotal movement in said horizontal plane, and have opposing ends pivotally coupled respectively to the opposing ends of said second bar.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |