Patent US4841871A successfully refreshed from Google Patents.
US4841871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular transportation system with aerodynamic lift augmented traction vehicles
Assignee: Individual
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Filing: 1984-04-19
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Granted: 1989-06-27
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Expires: 2004-04-19
Abstract
Abstract A monorail transportation system utilizing generally inverted channel shaped rail members for supporting personal transit vehicles which are each suspended from the rails by a carriage having traction motor propelled drive wheels engageable with the rail channel and spaced apart vehicle supporting guide wheels. The vehicles have aerodynamically contoured bodies provided with lift surfaces which provide varying degrees of lift in accordance with vehicle speed and angle of attack to reduce mechanical friction in the carriage and structural loading on the rail network. The vehicles are automatically controlled and used by individual user when called up from storage track sections at spaced apart stations along the rail network.
Inventors
- 👤 Martin N. Leibowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:18
CPC Classifications
B; B61; B61C; B61C13/00; B61C13/04; B61B; B61B13/00; B61B13/04; B61B3/00; B61B3/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
215 words
An elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, said vehicles each comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means and propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, said vehicle also comprising a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway, said vehicle includes means for biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said trackway comprises means forming a continuous channel shaped member including a top web, opposed flanges, and opposed bottom webs defining a slot between said bottom webs, and said traction support wheels comprise a pair of spaced apart support wheel assemblies engageable with said bottom webs for supporting said vehicle on said trackway, and said traction wheel means is supported on said vehicle for continuous engagement with said top web for propelling said vehicle along said trackway.
Claim 2
Dependent Claim
215 words
An elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, said vehicles each comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means and propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, said vehicle also comprising a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway, said vehicle includes means for biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said trackway comprises means forming a continuous channel shaped member including a top web, opposed flanges, and opposed bottom webs defining a slot between said bottom webs, and said traction support wheels comprise a pair of spaced apart support wheel assemblies engageable with said bottom webs for supporting said vehicle on said trackway, and said traction wheel means is supported on said vehicle for continuous engagement with said top web for propelling said vehicle along said trackway.
Claim 3
Dependent Claim
75 words
The transport system set forth in claim 1 wherein: said trackway includes opposed parallel mainline track sections supported on spaced apart support towers, vehicle embarkation and disembarkation stations including a closed loop storage trackway section connected to said main line track sections, respectively, for storing unused vehicles, and means for switching said storage trackway sections in and out of communication with said main line track section for receiving and discharging vehicles from said storage sections.
Claim 4
Dependent Claim
30 words
The transport system set forth in claim 2 wherein: said trackway includes a continuous siding interconnecting each of said mainline track sections with said storage track sections at said stations.
Claim 5
Dependent Claim
33 words
The transport system set forth in claim 3 wherein: said trackway includes opposed crossover track sections interconnecting opposed sidings for transferring vehicles from one mainline track section to the other mainline track section.
Claim 6
Dependent Claim
124 words
The transport system set forth in claim 1 wherein: said trackway includes plural pairs of opposed parallel single track sections, said pairs of track sections meeting at an intersection and being vertically separated one pair from the other at said intersection; connecting right hand track sections for connecting a track section of one pair and a track section of another pair; and crossover track sections interconnecting opposed track sections of a pair at points along said track sections of said pair with respect to said right hand track sections to provide for a vehicle to exit a track section of one pair and enter a selected one of the opposed track sections of said one pair and a track section of the other pair.
Claim 7
Dependent Claim
77 words
An elevated monorail transport system including a main trackway adapted to support a plurality of vehicles for traversal along said trackway, said trackway comprising opposed parallel mainline track sections supported on spaced apart support towers, vehicle embarkation and disembarkation stations including a closed loop storage trackway section connected to said mainline track sections, respectively, for storing unused vehicles, and a continuous siding interconnecting each of said mainline track sections with said storage track sections at said stations.
Claim 8
Dependent Claim
77 words
An elevated monorail transport system including a main trackway adapted to support a plurality of vehicles for traversal along said trackway, said trackway comprising opposed parallel mainline track sections supported on spaced apart support towers, vehicle embarkation and disembarkation stations including a closed loop storage trackway section connected to said mainline track sections, respectively, for storing unused vehicles, and a continuous siding interconnecting each of said mainline track sections with said storage track sections at said stations.
Claim 9
Dependent Claim
33 words
The transport system set forth in claim 6 wherein: said trackway includes opposed crossover track sections interconnecting opposed sidings for transferring vehicles from one mainline track section to the other mainline track section.
Claim 10
Dependent Claim
189 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway, means for continuously biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said support wheels comprise a pair of spaced apart support wheel assemblies engageable with a first web of said trackway for supporting said vehicle on said trackway, and said traction wheel means is supported on said vehicle for continuous engagement with an opposed and spaced second web for propelling said vehicle along said trackway.
Claim 11
Dependent Claim
189 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway, means for continuously biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said support wheels comprise a pair of spaced apart support wheel assemblies engageable with a first web of said trackway for supporting said vehicle on said trackway, and said traction wheel means is supported on said vehicle for continuous engagement with an opposed and spaced second web for propelling said vehicle along said trackway.
Claim 12
Dependent Claim
181 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackways, means for continuously biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said trackway comprising a continuous channel shaped member, said support wheels riding on a first flange of said channel shaped member and said propulsion wheel means riding on a second flange of said channel member, said first and second flanges being spaced apart from each other.
Claim 13
Dependent Claim
181 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackways, means for continuously biasing said propulsion wheel means in engagement with said trackway during the lifting process of the vehicle with respect to said trackway, said trackway comprising a continuous channel shaped member, said support wheels riding on a first flange of said channel shaped member and said propulsion wheel means riding on a second flange of said channel member, said first and second flanges being spaced apart from each other.
Claim 14
Dependent Claim
165 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway means for continuously biasing said propulsion wheel means in engagement with said trackway during lifting of said vehicle relative to said trackway, said trackway comprising a continuous channel shaped member, said support wheels and said propulsion wheel means being positioned within said channel shaped member and reacting against said channel shaped member in opposite directions.
Claim 15
Dependent Claim
165 words
In an elevated monorail transport system including at least a main trackway adapted to support a plurality of vehicles for traversal along said trackway, a vehicle comprising traction carriage means including support wheels for supporting said vehicle on said trackway, propulsion motor means drivably connected to propulsion wheel means continuously engaged with a portion of said trackway for propelling said vehicle along said trackway, and a body connected to said traction carriage means and having an aerodynamic lift surface formed thereon for providing lift forces during traversal of said vehicle along said trackway to reduce friction forces acting on said support wheels and vehicle induced structural loading on said trackway means for continuously biasing said propulsion wheel means in engagement with said trackway during lifting of said vehicle relative to said trackway, said trackway comprising a continuous channel shaped member, said support wheels and said propulsion wheel means being positioned within said channel shaped member and reacting against said channel shaped member in opposite directions.
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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |