US4205243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous linear motor
Assignee: Siemens AG
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Filing: 1977-12-13
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Granted: 1980-05-27
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Expires: 1997-12-13
Abstract
Abstract A synchronous linear motor having an exciter disposed as a co-moving translator on a track bound vehicle, and having a traveling field winding comprising switching sections which are supplied from a stationary, controlled static frequency changer, wherein the traveling field winding is subdivided into a plurality of individual conductors disposed and connected electrically in parallel so as to reduce the operating reactance. The harmonic content is reduced by an asymmetrical spacing of the individual conductors.
Inventors
- 👤 Stenio Lingaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:07
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
In an iron-free synchronous long stator linear motor, having an exciter disposed as a comoving translator on a track bound vehicle, and having a traveling field winding subdivided into switching sections which are supplied from a stationary, controlled static frequency changer, the improvement comprising the traveling field winding being a plurality of conductors disposed and connected electrically in parallel so as to reduce the operating reactance, said plurality of conductors having spacings with respect to each other which are uneven so as to minimize excitation flux interlinkage.
Claim 2
Dependent Claim
87 words
In an iron-free synchronous long stator linear motor, having an exciter disposed as a comoving translator on a track bound vehicle, and having a traveling field winding subdivided into switching sections which are supplied from a stationary, controlled static frequency changer, the improvement comprising the traveling field winding being a plurality of conductors disposed and connected electrically in parallel so as to reduce the operating reactance, said plurality of conductors having spacings with respect to each other which are uneven so as to minimize excitation flux interlinkage.
Claim 3
Independent Claim
94 words
A method, of constructing the traveling field winding in an iron-free synchronous long stator linear motor having an exciter disposed as a co-moving translator on a track bound vehicle, and having a traveling field winding subdivided into switching sections which are supplied from a stationary, controlled static frequency changer, comprising constructing said traveling field winding as a plurality of conductors disposed and connected electrically in parallel so as to reduce the operating reactance and disposing said individual conductors with spacings to each other which are uneven so as to minimize the excitation flux interlinkage.
Claim 4
Independent Claim
94 words
A method, of constructing the traveling field winding in an iron-free synchronous long stator linear motor having an exciter disposed as a co-moving translator on a track bound vehicle, and having a traveling field winding subdivided into switching sections which are supplied from a stationary, controlled static frequency changer, comprising constructing said traveling field winding as a plurality of conductors disposed and connected electrically in parallel so as to reduce the operating reactance and disposing said individual conductors with spacings to each other which are uneven so as to minimize the excitation flux interlinkage.
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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) | 1983-05-27 | 1983-11-26 | 1984-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-27 | 1987-11-26 | 1988-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-27 | 1991-11-26 | 1992-05-27 | $7700.00 | Window Closed / Lapsed |