US4363987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current machine stator
Assignee: Individual
•
Filing: 1980-06-04
•
Granted: 1982-12-14
•
Expires: 2000-06-04
Abstract
Abstract Stator of a direct current electrical machine comprises a support structure (1) defined by a pair of frame members (4) and beams (2), the latter being disposed around the center line (3) of the stator with the ends thereof affixed to the frame members (4), and a magnetic circuit (7) having a yoke (8) and pole pieces (9 and 10) secured to the yoke (8). The yoke is in the form of a single continuous band coiled into a cylindrical spiral, each turn of the spiral embracing by a wider side thereof all the beams (2) of the support structure (1).
Inventors
- 👤 Ljudmila A. Vorotyntseva
- 👤 Eduard A. Florinsky
- 👤 Leonid I. Semenkov
- 👤 Valentin S. Sysoev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/18; H02K1/185; H02K1/14; H02K1/146; H02K1/148
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
A direct current electrical machine stator comprising a support structure having beams disposed around the longitudinal center line of the stator, a magnetic circuit incorporating a yoke adapted to cooperate with support beams, and pole pieces affixed to the yoke, characterized in that the yoke (8) is in the form of a continuous band coiled into a cylindrical spiral with each turn of the spiral embracing by a wider side thereof all the support beams (2) of the support structure (1), the support structure (1) further comprising a pair of frame members (4) positioned at the bases of the cylindrical spiral and having ends of the support beams (2) of the support structure (1) secured thereto.
Claim 2
Dependent Claim
116 words
A direct current electrical machine stator comprising a support structure having beams disposed around the longitudinal center line of the stator, a magnetic circuit incorporating a yoke adapted to cooperate with support beams, and pole pieces affixed to the yoke, characterized in that the yoke (8) is in the form of a continuous band coiled into a cylindrical spiral with each turn of the spiral embracing by a wider side thereof all the support beams (2) of the support structure (1), the support structure (1) further comprising a pair of frame members (4) positioned at the bases of the cylindrical spiral and having ends of the support beams (2) of the support structure (1) secured thereto.
Claim 3
Dependent Claim
29 words
A stator as claimed in claim 1, characterized in that at least one frame member (4) of the support structure (1) is provided with at least one aperture (26).
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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |