US5481984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg apparatus for the magnetically levitated vehicle
Assignee: Sumitomo Precision Products Co Ltd
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Filing: 1994-08-09
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Granted: 1996-01-09
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Expires: 2014-08-09
Abstract
Abstract According to this invention, wheels are pivotally supported by a fork arm comprising a lever-type supporting component, an expandable lifting actuator having damper serially arranged to buffer and support thereof at other end end of arm of said supporting component. With this structure, a complete retraction of wheels can be achieved. Hence the supporting component can be used both as the supporting leg apparatus to vertically support the magnetically levitated vehicle and the guide leg apparatus to mechanically guide the vehicle along the guideway side wall. It is, therefore, characterized with the simple structure, light weight, small storage space, and easy to perform maintenance. This invention also discloses the guide leg apparatus in which the stopper ring apparatus guides mechanically the vehicle in place of the guide leg apparatus, when the guide leg apparatus malfunctions or in emergency when magnets are turned off while magnetically levitating at high speed and said leg apparatus mentioned is separately placed. It enables for the guide leg apparatus to retract while levitating and cruising the vehicle magnetically at high speed. Remarkable reduction of running resistance and the running noise as well can be achieved and the storage space for the guide leg apparatus can be smaller with less weight.
Inventors
- 👤 Kazuhiro Oda
- 👤 Hideyuki Takizawa
- 👤 Masamichi Yamada
- 👤 Fumio Iwamoto
- 👤 Shoji Iwai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:07
CPC Classifications
B; B60; B60L; B60L13/00; B60L13/03; B60L13/035; B60L13/04; B60L13/06; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
A leg apparatus for adjustably connecting a wheel to a bracket on a magnetically levitated vehicle, said leg apparatus comprising: a generally L-shaped lever that provides a fork am to which said wheel is axially connected and a lever arm, said lever being pivotally connected to said bracket where said fork arm and said lever arm merge, and an expandable lifting actuator connected between said lever arm of said lever and said vehicle to pivot said lever and said wheel about said bracket and move said wheel from a storage position to a use position, said expandable lifting actuator including a barrel which is connected to said vehicle, a piston cylinder that includes a damper cylinder and a lifting rod which extends into said barrel, a damper rod which is connected to said lever arm and extends into said damper cylinder, and an internal lock mechanism.
Claim 2
Dependent Claim
146 words
A leg apparatus for adjustably connecting a wheel to a bracket on a magnetically levitated vehicle, said leg apparatus comprising: a generally L-shaped lever that provides a fork am to which said wheel is axially connected and a lever arm, said lever being pivotally connected to said bracket where said fork arm and said lever arm merge, and an expandable lifting actuator connected between said lever arm of said lever and said vehicle to pivot said lever and said wheel about said bracket and move said wheel from a storage position to a use position, said expandable lifting actuator including a barrel which is connected to said vehicle, a piston cylinder that includes a damper cylinder and a lifting rod which extends into said barrel, a damper rod which is connected to said lever arm and extends into said damper cylinder, and an internal lock mechanism.
Claim 3
Dependent Claim
32 words
The leg apparatus according to claim 1, including a measuring rod supported by said damper cylinder and said barrel to indicate the relative positioning of said damper cylinder relative to said barrel.
Claim 4
Dependent Claim
37 words
The leg apparatus according to claim 1, wherein said internal lock mechanism is located within said barrel, and including a lock inspecting meter on said barrel to indicate an operational condition of said internal lock mechanism therein.
Claim 5
Dependent Claim
28 words
A leg apparatus according to claim 1, including attachment means at a free end of the fork arm remote from the lever arm for attachment of said wheel.
Claim 6
Dependent Claim
138 words
A guide apparatus for a magnetically levitated vehicle which includes first and second brackets and magnets thereon, comprising a generally L-shaped lever that provides a fork arm to which a wheel is axially connected and a lever arm, said lever being pivotally connected to said bracket where said fork arm and said lever arm merge, an expandable lifting actuator connected between said lever arm of said lever and said vehicle to pivot said lever and said wheel about said first bracket and move said wheel from a storage position to a use position, said expandable lifting actuator including an internal lock mechanism and serially arranged damping means, a stopper ring means which guides the vehicle along a guideway side wall when a malfunction of the magnets mounted on the vehicle or a malfunction of said leg apparatus occurs.
Claim 7
Dependent Claim
138 words
A guide apparatus for a magnetically levitated vehicle which includes first and second brackets and magnets thereon, comprising a generally L-shaped lever that provides a fork arm to which a wheel is axially connected and a lever arm, said lever being pivotally connected to said bracket where said fork arm and said lever arm merge, an expandable lifting actuator connected between said lever arm of said lever and said vehicle to pivot said lever and said wheel about said first bracket and move said wheel from a storage position to a use position, said expandable lifting actuator including an internal lock mechanism and serially arranged damping means, a stopper ring means which guides the vehicle along a guideway side wall when a malfunction of the magnets mounted on the vehicle or a malfunction of said leg apparatus occurs.
Claim 8
Dependent Claim
71 words
The guide apparatus according to claim 5, wherein said stopper ring means includes a stopper ring having a center shaft, said stopper ring being rotatably mounted on said second bracket to project from said vehicle, a plurality of a ball bearings around said center shaft, a vibroisolation material between said ball bearings and said second bracket, and incline step tabs to control inclination of said shaft relative to said second bracket.
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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) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |