US4523059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power storage system for electric railway
Assignee: Mitsubishi Electric Corp
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Filing: 1982-09-17
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Granted: 1985-06-11
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Expires: 2002-09-17
Abstract
Abstract This invention relates to a power storage system for electric railway which comprises a motor-generator connected to a power system for feeding an electric vehicle with electric power, and a flywheel coupled to the motor-generator, and in which the motor-generator is allowed to store the electric power and thereafter discharge it in correspondence with approach of the electric vehicle to a predetermined running section and running thereof in the section.
Inventors
- 👤 Toshimi Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:03
CPC Classifications
B; B60; B60M; B60M3/00; B60M3/06; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A power storage system for electric railways having sections comprising a motor-generator connected to a power system for feeding an electric vehicle running in said sections with electric power, a flywheel coupled to said motor-generator, and means including a controller having information on the position of said vehicle in said sections for controlling said motor-generator based on the position information to increase the speed of said flywheel and store power and immediately thereafter to discharge power stored in said flywheel by driving said motor-generator in correspondence with arrival of the electric vehicle at a predetermined running section and running thereof in the section.
Claim 2
Dependent Claim
103 words
A power storage system for electric railways having sections comprising a motor-generator connected to a power system for feeding an electric vehicle running in said sections with electric power, a flywheel coupled to said motor-generator, and means including a controller having information on the position of said vehicle in said sections for controlling said motor-generator based on the position information to increase the speed of said flywheel and store power and immediately thereafter to discharge power stored in said flywheel by driving said motor-generator in correspondence with arrival of the electric vehicle at a predetermined running section and running thereof in the section.
Claim 3
Dependent Claim
114 words
A power system for electric railways comprising a motor-generator connected to a power system including an overhead trolley line for feeding an electric vehicle with electric power, a flywheel coupled to said motor-generator, an electric vehicle detector disposed along said overhead trolley line for detecting arrival of the electric vehicle at a predetermined running section, and means including a controller connected to receive positional information from said detector for controlling said motor-generator to increase the speed of said flywheel and store power and thereafter to discharge power stored in said flywheel by driving said motor-generator in correspondence with approach of the electric vehicle to the predetermined running section and running thereof in the section.
Claim 4
Dependent Claim
114 words
A power system for electric railways comprising a motor-generator connected to a power system including an overhead trolley line for feeding an electric vehicle with electric power, a flywheel coupled to said motor-generator, an electric vehicle detector disposed along said overhead trolley line for detecting arrival of the electric vehicle at a predetermined running section, and means including a controller connected to receive positional information from said detector for controlling said motor-generator to increase the speed of said flywheel and store power and thereafter to discharge power stored in said flywheel by driving said motor-generator in correspondence with approach of the electric vehicle to the predetermined running section and running thereof in the section.
Claim 5
Dependent Claim
99 words
A power storage system for electric railways comprising a motor-generator connected to a power system for feeding an electric vehicle with electric power, a flywheel coupled to said motor-generator, and means including a controller having positional information as to said vehicle for controlling said motor-generator to increase the speed of said flywheel and store power and thereafter discharge power stored in said flywheel by driving said motor-generator in correspondence with the arrival of the electric vehicle at a predetermined running section and running thereof in the section, said positional information being based on a timetable of the electric vehicle.
Claim 6
Dependent Claim
99 words
A power storage system for electric railways comprising a motor-generator connected to a power system for feeding an electric vehicle with electric power, a flywheel coupled to said motor-generator, and means including a controller having positional information as to said vehicle for controlling said motor-generator to increase the speed of said flywheel and store power and thereafter discharge power stored in said flywheel by driving said motor-generator in correspondence with the arrival of the electric vehicle at a predetermined running section and running thereof in the section, said positional information being based on a timetable of the electric vehicle.
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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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |