US4258278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear induction motor
Assignee: Individual
•
Filing: 1979-10-24
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Granted: 1981-03-24
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Expires: 1999-10-24
Abstract
Abstract A linear induction motor comprises a current-conducting secondary element of a U-shaped cross-section, accommodating an inductor. The inductor has laminated U-shaped and E-shaped cores carrying a polyphase winding. Each E-shaped core is arranged between two U-shaped cores. The polyphase winding comprises two parts each coil of which encompasses respective outermost legs of E-shaped cores and respective yokes of the U-shaped cores which are juxtaposed to said outermost legs.
Inventors
- 👤 Alexandr D. Popov
- 👤 Vladimir A. Solomin
- 👤 Vladimir M. Mindin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:44
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A linear induction motor comprising: a current-conducting secondary element having a longitudinal axis and being U-shaped in cross-section; an inductor disposed inside said current-conducting secondary element; laminated U-shaped cores of said inductor, each having a yoke, said cores being disposed in two rows so that said yokes of said laminated U-shaped cores of said first row face said yokes of said laminated U-shaped cores of said second row; laminated E-shaped cores of said inductor, each having two outermost legs and being disposed between respective ones of said laminated U-shaped cores of said first row and second rows so that they directly adjoin by their outermost legs to the yokes of said laminated U-shaped cores; polyphase windings of said inductor made up of two parts each having coils disposed symmetrically relative to said longitudinal axis of said current-conducting element and encompassing respective outermost legs of said laminated E-shaped cores and respective yokes of said laminated U-shaped cores which are juxtaposed to the outermost legs.
Claim 2
Dependent Claim
163 words
A linear induction motor comprising: a current-conducting secondary element having a longitudinal axis and being U-shaped in cross-section; an inductor disposed inside said current-conducting secondary element; laminated U-shaped cores of said inductor, each having a yoke, said cores being disposed in two rows so that said yokes of said laminated U-shaped cores of said first row face said yokes of said laminated U-shaped cores of said second row; laminated E-shaped cores of said inductor, each having two outermost legs and being disposed between respective ones of said laminated U-shaped cores of said first row and second rows so that they directly adjoin by their outermost legs to the yokes of said laminated U-shaped cores; polyphase windings of said inductor made up of two parts each having coils disposed symmetrically relative to said longitudinal axis of said current-conducting element and encompassing respective outermost legs of said laminated E-shaped cores and respective yokes of said laminated U-shaped cores which are juxtaposed to the outermost legs.
References Cited (Backward Citations)
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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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |