Patent US3771033A successfully refreshed from Google Patents.
US3771033A
Expired / Lapsed
US
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Apparatus for propelling a movable body in a suspended state at a very high speed
Assignee: Japan National Railways
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Filing: 1971-07-06
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Granted: 1973-11-06
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Expires: 1991-07-06
Abstract
Abstract The present invention has to do with a method for propelling a movable body suspended along a set path at a very high speed. Along the path of the movable body, fixed armature windings consisting of rectangular current loops are continuously arranged adjacent to one another in vertical direction to the ground. Power supply mechanisms to supply d-c successively to the movable body as it moves on are provided on said fixed armature windings. The movable body is mounted on a movable magnetic field. The movable magnetic field is generated by a permanent magnet or an electromagnet which produces a magnetic flux cutting across the conductors of the fixed armature windings, which is perpendicular to the current loop of the fixed armature windings, said conductors being perpendicular and parallel to the ground. A relative lift is created between the conductor, parallel to the ground, of the fixed armature winding and the movable magnetic field, while at the same time a relative drive is created between the conductor, perpendicular to the ground, of the fixed armature winding and the movable magnetic field, thereby the movable body can be propelled in a suspended state.
Inventors
- 👤 K Matsui
- 👤 T Umemori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/03; H02K41/031; B; B60; B60L; B60L13/00; B60L13/03; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
180 words
An apparatus for propelling an overland movable body at a very high speed in a suspended state under the influence of a magnetic flux comprising: a. fixed armature windings which consist of rectangular current loops, having vertical and horizontal conductors, aligned continuously along the path of travel of said movable body, moving direction, b. movable magnetic fields affixed to the underside of said movable body and disposed so that the magnetic flux generated is perpendicular to said current loops of said fixed armature windings and cuts across said vertical and horizontal conductors of said fixed armature windings; and c. a current-collecting means, which supplies and ceases to supply the d-c to adjacent fixed armature winding continuously with the shift of said movable magnetic fields, a relative lift being developed between said horizontal conductors of said fixed armature windings and said movable magnetic fields and at the same time a relative drive being developed between said vertical conductors of said fixed armature windings and said movable magnetic fields, thereby causing the movable body to be suspended and propelled along said path.
Claim 2
Independent Claim
180 words
An apparatus for propelling an overland movable body at a very high speed in a suspended state under the influence of a magnetic flux comprising: a. fixed armature windings which consist of rectangular current loops, having vertical and horizontal conductors, aligned continuously along the path of travel of said movable body, moving direction, b. movable magnetic fields affixed to the underside of said movable body and disposed so that the magnetic flux generated is perpendicular to said current loops of said fixed armature windings and cuts across said vertical and horizontal conductors of said fixed armature windings; and c. a current-collecting means, which supplies and ceases to supply the d-c to adjacent fixed armature winding continuously with the shift of said movable magnetic fields, a relative lift being developed between said horizontal conductors of said fixed armature windings and said movable magnetic fields and at the same time a relative drive being developed between said vertical conductors of said fixed armature windings and said movable magnetic fields, thereby causing the movable body to be suspended and propelled along said path.
Claim 3
Dependent Claim
44 words
An apparatus as claimed in claim 1 wherein a plurality of said fixed armature windings with the same shape and dimensions are aligned superposed with a stagger equal to one division of the current loop length in the moving direction divided by an integer.
Claim 4
Dependent Claim
23 words
An apparatus as claimed in claim 1 which further includes slide-shoes for supporting said movable body when the same is not in motion.
Claim 5
Dependent Claim
124 words
An apparatus as claimed in claim 1 which further comprises power supply means for said fixed armature windings including: a. d-c supply means connected to a plus bus bar and a minus bus bar disposed along said fixed armature windings; b. thyristor d-c switches inserted between the connecting wires of respective fixed armature windings and the plus and minus bus bars; and c. ignition signal generators and extinction signal generators displacably mounted along the path of travel of said movable body at specified gaps on both sides thereof, said generators issuing an ignition or extinction signal to said thyrister d-c switches to supply or cut-off the supply of d-c to the adjacent fixed armature windings being effected with the progress of the movable body.
Claim 6
Dependent Claim
102 words
An apparatus as claimed in claim 1 further comprising: connecting wires, each joining consecutive fixed armature windings, current-collecting means, each attached to each of said connecting wires, plus and minus bus bars disposed continuously along said path of travel adjustably attached to said movable body adapted to electrically short consecutive current-collecting means and said plus and minus bus bars, and d.c. supply means connected to said plus and minus bus bars for supplying d.c. to said fixed armature windings, whereby said fixed armature windings can be consecutively energized along the path of travel of said movable body to effect the motion thereof.
Claim 7
Dependent Claim
20 words
An apparatus as claimed in claim 4 wherein consecutive current-collecting means are joined by a high resistance to prevent sparking.
Claim 8
Dependent Claim
30 words
An apparatus as claimed in claim 4 wherein said shorting means is a conductive roller whose position with respect to said movable body is determined by a threaded engagement means.
Claim 9
Dependent Claim
39 words
An apparatus as claimed in claim 5 wherein means are provided for retarding the forward motion of said movable body by advancing said threaded engagement means to move said conductive roller in a direction opposite to that of travel.
Claim 10
Dependent Claim
25 words
an apparatus as claimed in claim 5 wherein said plus and minus bus bars are located between two parallel rows of said fixed armature windings.
Claim 11
Dependent Claim
213 words
A linear motor for propelling a vehicle overland in a suspended state at a very high speed comprised of magnetic poles arranged on the bottom side of the vehicle, said magnetic poles acting in combination with fixed armature windings, which are located in a continuous manner along the path of travel of said vehicle in the direction of motion and which are connected synchronously with the shifting of the magnetic poles to a stationary d-c source by means of switching devices controlled from said vehicle and which are disconnected from the same source, whereby not only a relative lift but alos a relative propulsion is simultaneously generated in the direction of motion between the fixed armature windings and the magnetic poles fixed to the vehicle, and further characterized in that the armature windings consist of vertically arranged rectangular current loops connected in series and which are permeated by the flux of the megnetic poles fixed to the vehicle in a rectangular relationship relative to the current loop plane and in such a way that the force generated by the horizontal parts of the current effect the lift in connection with the magnetic pole flux, and the forces generated by the vertical parts of the current loop cause propulsion in the direction of travel.
Claim 12
Dependent Claim
213 words
A linear motor for propelling a vehicle overland in a suspended state at a very high speed comprised of magnetic poles arranged on the bottom side of the vehicle, said magnetic poles acting in combination with fixed armature windings, which are located in a continuous manner along the path of travel of said vehicle in the direction of motion and which are connected synchronously with the shifting of the magnetic poles to a stationary d-c source by means of switching devices controlled from said vehicle and which are disconnected from the same source, whereby not only a relative lift but alos a relative propulsion is simultaneously generated in the direction of motion between the fixed armature windings and the magnetic poles fixed to the vehicle, and further characterized in that the armature windings consist of vertically arranged rectangular current loops connected in series and which are permeated by the flux of the megnetic poles fixed to the vehicle in a rectangular relationship relative to the current loop plane and in such a way that the force generated by the horizontal parts of the current effect the lift in connection with the magnetic pole flux, and the forces generated by the vertical parts of the current loop cause propulsion in the direction of travel.
Claim 13
Dependent Claim
27 words
A linear motor according to claim 10, characterized in that the armature windings are arranged overlapping each other according to the type of known d-c lap windings.
Claim 14
Dependent Claim
43 words
A linear motor according to claim 10, characterized by thyristor d-c switches arranged between the armature windings and the fixed d-c source, the ignition pulse furnished by ignition generators with extinction signal generators movably arranged in the direction of travel of the vehicle.
Claim 15
Dependent Claim
103 words
A linear motor according to claim 10, characterized in that continuous bus bars are assigned to both poles of the d-c source parallel to the path of travel of the vehicle, and in that two more bus bars subdivided into a series of sections extend parallel to the first bus bars, the ends of one of the armature windings connected to said sections of the second bus bars, and in that the continuous bus bars can be connected with the sections of one of the subdivided bus bars each by short-circuiting devices fixed to the vehicle and adjustable in the direction of travel.
Claim 16
Dependent Claim
16 words
A linear motor according to claim 13, characterized in that the short-circuiting devices are conductive rollers.
Claim 17
Dependent Claim
19 words
A linear motor according to claim 13, characterized in that high-impedance resistors are switched parallel to the armature windings.
Claim 18
Dependent Claim
24 words
A linear motor according to claim 13, characterized in that the bus bars are located between two parallel rows of the fixed armature windings.
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |