Patent US2979796A successfully refreshed from Google Patents.
Patent US4388569A successfully refreshed from Google Patents.
US4388569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for automatic control of dynamic braking of independent transport facility
Assignee: Individual
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Filing: 1981-09-24
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Granted: 1983-06-14
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Expires: 2001-09-24
Abstract
Abstract A system for automatic control of dynamic braking of an independent transport facility comprises an exciting-current regulator of traction motors provided with rotational-speed transducers whose outputs are connected to the input of a traction-motor reactive e.m.f. limiter, and a voltage transducer whose output is coupled to the first input of a traction-motor exciting-current and brake-horse-power limiter formed with three interconnected rectifying bridges, the outputs of the two bridges being connected in accord and coupled to the output of the third bridge and to one input of a comparison unit, while the inputs thereof are connected to an exciting-current transducer and to a braking intensity setter, the second input of the comparison unit being connected through a diode to the traction-motor reactive e.m.f. limiter.
Inventors
- 👤 Gennady A. Shipaev
- 👤 Vyacheslav V. Seliverstov
- 👤 Nikolai A. Osipov
- 👤 Anatoly P. Prolygin
- 👤 Anatoly D. Mashikhin
- 👤 Mikhail P. Askinazi
- 👤 Jury M. Andreev
- 👤 Samuil I. Kagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:32
CPC Classifications
B; B60; B60L; B60L7/00; B60L7/02; B60L7/04; B60L2210/00; B60L2210/20; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
223 words
A system for automatic control of dynamic braking of an independent transport facility comprising: traction motors with field windings; a traction-motor exciting-current regulator whose output is connected to said field windings of said traction motors; rotational-speed transducers associated with said traction motors; a traction-motor reactive e.m.f. limiter whose input is coupled to the output of said rotational-speed transducer; a voltage transducer associated with at least one of said traction motors; an exciting-current transducer of associated with at least one said traction motors; a traction-motor exciting-current and brake-horsepower limiter formed with at least a first set of three interconnected rectifying bridges, outputs of two of said first set of rectifying bridges being connected in series and connected to the output of the third of said first set of rectifying bridge; a first input of said traction-motor exciting-current and brake-horsepower limiter being coupled to the output of said voltage transducer; while a second input thereof is connected to said exciting-current transducer; a braking intensity setter connected to a third input of said traction-motor exciting-current and brake-horsepower limiter; a comparison unit having its first input connected to the output of said traction-motor exciting-current and brake-horsepower limiter and its second input coupled through a diode to said traction-motor reactive e.m.f. limiter, the output of the comparison unit being connected to the input of said traction-motor exciting-current regulator.
Claim 2
Independent Claim
223 words
A system for automatic control of dynamic braking of an independent transport facility comprising: traction motors with field windings; a traction-motor exciting-current regulator whose output is connected to said field windings of said traction motors; rotational-speed transducers associated with said traction motors; a traction-motor reactive e.m.f. limiter whose input is coupled to the output of said rotational-speed transducer; a voltage transducer associated with at least one of said traction motors; an exciting-current transducer of associated with at least one said traction motors; a traction-motor exciting-current and brake-horsepower limiter formed with at least a first set of three interconnected rectifying bridges, outputs of two of said first set of rectifying bridges being connected in series and connected to the output of the third of said first set of rectifying bridge; a first input of said traction-motor exciting-current and brake-horsepower limiter being coupled to the output of said voltage transducer; while a second input thereof is connected to said exciting-current transducer; a braking intensity setter connected to a third input of said traction-motor exciting-current and brake-horsepower limiter; a comparison unit having its first input connected to the output of said traction-motor exciting-current and brake-horsepower limiter and its second input coupled through a diode to said traction-motor reactive e.m.f. limiter, the output of the comparison unit being connected to the input of said traction-motor exciting-current regulator.
Claim 3
Dependent Claim
70 words
A system for automatic control of dynamic braking of an independent transport facility as claimed in claim 1, wherein said traction-motor reactive e.m.f. limiter employs diode bridges forming two parallel groups, each of which includes two diode bridges connected in parallel, series-connected resistors being placed in parallel with said groups of the diode bridges, a center tap of said resistors being connected to a common point of each said group.
Claim 4
Dependent Claim
114 words
A system for automatic control of dynamic braking of an independent transport facility as claimed in claim 1, which includes a speed stabilizer incorporating a non-contact speed setter and a second set of three rectifying bridges connected in series, two of said second set of rectifying bridges being connected to said rotational-speed transducers, while said third rectifying bridge of said second set is connected to the non-contact speed setter, a resistor being incorporated in the output circuit of said second set of rectifying bridges, a center tap of said resistor connected through a diode and a common point of said second set of rectifying bridges being connected to the input of said comparison unit.
Claim 5
Dependent Claim
114 words
A system for automatic control of dynamic braking of an independent transport facility as claimed in claim 2, which includes a speed stabilizer incorporating a non-contact speed setter and a second set of three rectifying bridges connected in series, two of said second set of rectifying bridges being connected to said rotational-speed transducers, while the third rectifying bridge of said second set is coupled to the non-contact speed setter, a resistor being incorporated in the output circuit of said second set of rectifying bridges, a center tap of said second set of resistor connected through a diode and a common point of said rectifying bridges being connected to the input of said comparison unit.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |