US3553512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single phase motor
Assignee: UDO TACHOMETER WERKE ADOLF SCH
•
Filing: 1969-05-26
•
Granted: 1971-01-05
•
Expires: 1989-05-26
Abstract
Abstract A single-phase motor with variable speed proportional to the frequency of the supply voltage, which comprises a split polehysteresis motor including split stator poles. The split stator poles include each a main pole and a auxiliary pole set off for a predetermined angle in peripheral direction and carrying a shortcircuiting winding. The motor includes a rotor comprising radially magnetized, disc-or ring-shaped permanent magnets, for creation of the main portion of the synchronous torque, and a disc-or ring-shaped element, serving the creation of an asynchronous moment of a magnetizable material with distinct hysteresis. The cross section of the short-circuiting winding, disposed on the auxiliary poles, is dimensioned such, that the maximum of the asynchronous moment is created in the lower portion of the frequency range of the supply voltage.
Inventors
- 👤 Wolfgang Vettermann
- 👤 Roland Sudler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:29
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A single-phase motor with variable speed proportional to the frequency of a supply voltage, comprising a split pole-hysteresis motor including split stator poles, said split stator poles including each a main pole and an auxiliary pole set off at a predetermined angle in a peripheral direction and carrying a short circuiting winding, said motor includes a rotor comprising radially magnetized, narrow permanent magnets with a cylindrical periphery, for creation of the main portion of the synchronous torque, and a cylindrical element serving the creation of an asynchronous moment, made of a magnetizable material with distinct hysteresis, the cross section of said short circuiting winding disposed on said auxiliary poles being dimensioned such, that the maximum of said asynchronous moment is created in lower portion of the frequeNcy range of the supply voltage, approximately between 5 and 20 Hz.
Claim 2
Dependent Claim
138 words
A single-phase motor with variable speed proportional to the frequency of a supply voltage, comprising a split pole-hysteresis motor including split stator poles, said split stator poles including each a main pole and an auxiliary pole set off at a predetermined angle in a peripheral direction and carrying a short circuiting winding, said motor includes a rotor comprising radially magnetized, narrow permanent magnets with a cylindrical periphery, for creation of the main portion of the synchronous torque, and a cylindrical element serving the creation of an asynchronous moment, made of a magnetizable material with distinct hysteresis, the cross section of said short circuiting winding disposed on said auxiliary poles being dimensioned such, that the maximum of said asynchronous moment is created in lower portion of the frequeNcy range of the supply voltage, approximately between 5 and 20 Hz.
Claim 3
Dependent Claim
32 words
The single-phase motor, as set forth in claim 1, wherein said cross section of said short circuiting winding is greater than the cross section of the iron core of said auxiliary poles.
Claim 4
Dependent Claim
65 words
The single-phase motor, as set forth in claim 1, wherein said rotor includes at least two of said permanent magnets disposed separately in axial direction, the magnetization axes of said permanent magnets are set off in peripheral direction for substantially the same angle, for which each of said main poles and each of said auxiliary poles of said stator are set off in peripheral direction.
Claim 5
Dependent Claim
23 words
The single-phase motor, as set forth in claim 1, which includes stator pole shoes of a design causing a predetermined direction of rotation.
Claim 6
Dependent Claim
19 words
The single-phase motor, as set forth in claim 1, wherein the winding of said stator comprises a ring coil.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |