Patent US4523059A successfully refreshed from Google Patents.
US4523059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power storage system for electric railway
Assignee: Mitsubishi Electric Corp
•
Filing: 1982-09-17
•
Granted: 1985-06-11
•
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 13:59
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.
References Cited (Backward Citations)
US1318755A
Cited
US807984A
Cited
US2009103A
Cited
US2741731A
Cited
US3541409A
Cited
US3667012A
Cited
US3858674A
Cited
SU821246A1
Cited
US4266180A
Cited
US4358719A
Cited
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 |