US4922152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous machine rotor lamination
Assignee: Siemens Energy and Automation Inc
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Filing: 1989-06-07
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Granted: 1990-05-01
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Expires: 2009-06-07
Abstract
Abstract A rotor lamination for a permanent magnet synchronous machine. The rotor lamination can be used for a two, four or eight pole synchronous machine. The orientation of the permanent magnets determines the number of poles of the machine. The lamination can also include openings adapted to contain conductors used to bring a synchronous motor up to synchronous speed as an induction motor.
Inventors
- 👤 R. Linn Gleghorn
- 👤 Paul D. Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:13
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276; H02K1/2766; H02K21/00; H02K21/46; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
162 words
A universal rotor lamination for a synchronous machine comprising a circular piece of lamination material defining: a periphery; a shaft opening adapted to accept the machine shaft, the opening being centrally disposed within the circular piece; at least four radially extending openings each defining a longitudinal axis and adapted to contain a magnet, the radially extending openings being disposed intermediate the periphery and the shaft opening, wherein the longitudinal axes of two of the radially extending openings coincide and are substantially perpendicular to the longitudinal axes of the other two radially extending openings; and at least eight interior openings each adapted to contain a magnet, each opening defining a longitudinal axis, wherein the longitudinal axis of each interior opening intersects with the longitudinal axis of the interior openings it is adjacent to, and the eight interior openings are disposed intermediate the periphery and the shaft opening; the lamination being universally useable in any of synchronous machines having two, four, and eight poles.
Claim 2
Dependent Claim
162 words
A universal rotor lamination for a synchronous machine comprising a circular piece of lamination material defining: a periphery; a shaft opening adapted to accept the machine shaft, the opening being centrally disposed within the circular piece; at least four radially extending openings each defining a longitudinal axis and adapted to contain a magnet, the radially extending openings being disposed intermediate the periphery and the shaft opening, wherein the longitudinal axes of two of the radially extending openings coincide and are substantially perpendicular to the longitudinal axes of the other two radially extending openings; and at least eight interior openings each adapted to contain a magnet, each opening defining a longitudinal axis, wherein the longitudinal axis of each interior opening intersects with the longitudinal axis of the interior openings it is adjacent to, and the eight interior openings are disposed intermediate the periphery and the shaft opening; the lamination being universally useable in any of synchronous machines having two, four, and eight poles.
Claim 3
Dependent Claim
26 words
The lamination of claim 1, wherein the radially extending openings each define a first conductor portion, the first conductor portion being adapted to contain conductor material.
Claim 4
Dependent Claim
23 words
The lamination of claim 2, wherein the interior openings each define a tip portion, the tip portion being adapted to contain conductor material.
Claim 5
Dependent Claim
37 words
The lamination of claim 1, wherein the radially extending openings and interior openings each define a portion adapted to contain a magnet having a substantially rectangular cross-section, all of the portions having the same size and shape.
Claim 6
Dependent Claim
19 words
The lamination of claim 4, further defining a plurality of induction conductor openings adapted to contain a conductive material.
Claim 7
Dependent Claim
12 words
The lamination of claim 5, further defining a plurality of alignment openings.
Claim 8
Dependent Claim
176 words
A universal rotor lamination for a synchronous motor defining: a circular periphery; a substantially circular shaft opening adapted to accept the machine shaft, the opening being centrally disposed within the lamination; a plurality of induction conductor openings adapted to contain a conductive material; at least four radially extending openings, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, the radially extending openings being disposed intermediate the periphery and the shaft opening such that the longitudinal axes of adjacent radially extending openings are substantially perpendicular; at least eight interior openings, such opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein each longitudinal axis is tangent to the periphery of a circle which is concentric with the motor shaft; the magnet portions of the radially extending openings and the interior openings having the same size and shape, and the lamination being universally useable in any of synchronous motors having two, four, and eight poles.
Claim 9
Dependent Claim
176 words
A universal rotor lamination for a synchronous motor defining: a circular periphery; a substantially circular shaft opening adapted to accept the machine shaft, the opening being centrally disposed within the lamination; a plurality of induction conductor openings adapted to contain a conductive material; at least four radially extending openings, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, the radially extending openings being disposed intermediate the periphery and the shaft opening such that the longitudinal axes of adjacent radially extending openings are substantially perpendicular; at least eight interior openings, such opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein each longitudinal axis is tangent to the periphery of a circle which is concentric with the motor shaft; the magnet portions of the radially extending openings and the interior openings having the same size and shape, and the lamination being universally useable in any of synchronous motors having two, four, and eight poles.
Claim 10
Dependent Claim
26 words
The lamination of claim 7, wherein the radially extending openings each define a first conductor portion, the first conductor portion being adapted to contain conductor material.
Claim 11
Dependent Claim
23 words
The lamination of claim 8, wherein the interior openings each define a tip portion, the tip portion being adapted to contain conductor material.
Claim 12
Dependent Claim
12 words
The lamination of claim 9, further defining a plurality of alignment openings.
Claim 13
Dependent Claim
197 words
A universal rotor lamination for a synchronous motor defining: a center and a periphery; a plurality of induction conductor openings adapted to contain a conductive material; at least four radially extending openings located between the center and the periphery, each opening including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section; at least four interior openings located between the center and the periphery, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein the longitudinal axes intersect to form a first square having a center corresponding to the center of lamination; and at least four interior openings located between the center and the periphery, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein the longitudinal axes intersect to form a second square having a center corresponding to the center of the lamination, the second square being offset from the first square; wherein the magnet portions have the same size and shape, and the laminations are universally useable in any of synchronous motors having two, four, and eight poles.
Claim 14
Dependent Claim
197 words
A universal rotor lamination for a synchronous motor defining: a center and a periphery; a plurality of induction conductor openings adapted to contain a conductive material; at least four radially extending openings located between the center and the periphery, each opening including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section; at least four interior openings located between the center and the periphery, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein the longitudinal axes intersect to form a first square having a center corresponding to the center of lamination; and at least four interior openings located between the center and the periphery, each opening defining a longitudinal axis and including a magnet portion adapted to contain a magnet having a substantially rectangular cross-section, wherein the longitudinal axes intersect to form a second square having a center corresponding to the center of the lamination, the second square being offset from the first square; wherein the magnet portions have the same size and shape, and the laminations are universally useable in any of synchronous motors having two, four, and eight poles.
Claim 15
Dependent Claim
26 words
The lamination of claim 11, wherein the radially extending openings each define a first conductor portion, the first conductor portion being adapted to contain conductor material.
Claim 16
Dependent Claim
23 words
The lamination of claim 12, wherein the interior openings each define a tip portion, the tip portion being adapted to contain conductor material.
Claim 17
Dependent Claim
12 words
The lamination of claim 13, further defining a plurality of alignment openings.
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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) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |