Patent US4088913A successfully refreshed from Google Patents.
US4088913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical machine stator
Assignee: Individual
•
Filing: 1976-02-20
•
Granted: 1978-05-09
•
Expires: 1996-02-20
Abstract
Abstract According to the invention, an electrical machine stator comprises a housing, a core, a winding mounted on the core, the upper and lower bars of said winding being connected in pairs in the end winding portion so as to form heads, a supporting member installed in said housing, which supporting member is constructed, in accordance with the invention, as a ring having a cylindrical projection whose height corresponds to the length of the end winding up to the heads, the stator being further provided with brackets whose supporting surfaces are arranged at an angle to the internal surface of the cylindrical projection, there being arranged wedges in the space between the internal surface of the cylindrical projection and the supporting surfaces of the brackets, which wedges are held in place by elastic members. The proposed stator is intended for high-power electrical machines, where it is necessary to ensure reliable fastening of the end winding in different operating conditions.
Inventors
- 👤 Igor A. Prigorovsky
- 👤 Anatoly D. Ignatiev
- 👤 Vladimir E. Shkolnik
- 👤 Garri M. Khutoretsky
- 👤 Alexandr I. Vorontsov
- 👤 Vladimir M. Fridman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:52
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/505
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An electrical machine stator comprising: a housing; a core; a winding mounted on said core and having upper bars and lower bars, associated pairs of upper and lower bars forming heads at the end portion of the winding; a supporting member arranged in said housing and constructed as a ring having a cylindrical projection, the height of said cylindrical projection substantially corresponding to the length of said end portion of the winding up to said heads; brackets connected to said heads and having supporting planes arranged at an angle to the internal surface of said cylindrical projection; wedges arranged between the surface of said cylindrical projection and the supporting planes of said brackets; and elastic means for supporting said wedges between said surface of said cylindrical projection and said supporting planes of said brackets.
Claim 2
Dependent Claim
134 words
An electrical machine stator comprising: a housing; a core; a winding mounted on said core and having upper bars and lower bars, associated pairs of upper and lower bars forming heads at the end portion of the winding; a supporting member arranged in said housing and constructed as a ring having a cylindrical projection, the height of said cylindrical projection substantially corresponding to the length of said end portion of the winding up to said heads; brackets connected to said heads and having supporting planes arranged at an angle to the internal surface of said cylindrical projection; wedges arranged between the surface of said cylindrical projection and the supporting planes of said brackets; and elastic means for supporting said wedges between said surface of said cylindrical projection and said supporting planes of said brackets.
Claim 3
Dependent Claim
38 words
A stator as claimed in claim 1, wherein on said internal surface of said cylindrical projection there are provided guide slots to receive said wedges, said guide slots being rectangular in cross-section and extending in the axial direction.
Claim 4
Dependent Claim
37 words
A stator as claimed in claim 1, wherein said wedge is provided with a protrusion on said side of said head of the end portion of said winding, said protrusion being intended to support said elastic member.
Claim 5
Dependent Claim
32 words
A stator as claimed in claim 1, wherein the elastic member is made from a non-magnetic titanium alloy having a modulus of elasticity between 1.10 6 and 1.3.10 6 kgf/cm 2 .
Claim 6
Dependent Claim
37 words
A stator as claimed in claim 2, wherein said wedge is provided with a protrusion on the side of said head of said end portion of the winding, which protrusion is intended to support said elastic member.
Claim 7
Dependent Claim
32 words
A stator as claimed in claim 2, wherein said elastic member is made from a non-magnetic titanium alloy having a modulus of elasticity between 1.10 6 and 1.3.10 6 kgf/cm 2 .
Claim 8
Dependent Claim
29 words
A stator as claimed in claim 3, wherein the elastic member is made from a non-magnetic titanium alloy having a modulus of elasticity between 1.10 6 kgf/cm 2 .
Claim 9
Dependent Claim
32 words
A stator as claimed in claim 5, wherein the elastic member is made from a non-magnetic titanium alloy having a modulus of elasticity between 1.10 6 and 1.3.10 6 kgf/cm 2 .
References Cited (Backward Citations)
US3089048A
Cited
FR1366320A
Cited
US3988625A
Cited
US3949257A
Cited
US3991334A
Cited
US3974409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |