Patent US3935490A successfully refreshed from Google Patents.
US3935490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting arrangement for the rotor of a vertical electric machine such as hydraulic generator or the like
Assignee: Siemens AG
•
Filing: 1975-01-10
•
Granted: 1976-01-27
•
Expires: 1995-01-10
Abstract
Abstract The support arrangement for a vertical electric machine includes a support spider thereof having arms fastened in a concrete wall surrounding the machine. The arms are secured only in the tangential direction. For this purpose, the arms extend into cavities of metal elements set into the concrete wall and are secured therein in the tangential direction by pretensioned rolling members. Because of the rolling motion of the rolling members, radial thermal expansion causes only relatively small radial forces to act and be transmitted to the concrete wall.
Inventors
- 👤 Franz Spirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:37
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
105 words
A supporting arrangement for the rotor of a vertical electric machine such as a hydraulic generator or the like comprising: at least one support spider equipped with a guide bearing for radially guiding the rotor and having a plurality of arms extending therefrom; a concrete support structure arranged in surrounding relation to the rotor; metal elements set into said concrete structure so as to define a plurality of cavities for receiving corresponding ones of said arms therein; and, adjustably pretensioned roller bearing means arranged at said cavities for holding said arms only in a tangential direction viewed relative to the stator of the electric machine.
Claim 2
Dependent Claim
105 words
A supporting arrangement for the rotor of a vertical electric machine such as a hydraulic generator or the like comprising: at least one support spider equipped with a guide bearing for radially guiding the rotor and having a plurality of arms extending therefrom; a concrete support structure arranged in surrounding relation to the rotor; metal elements set into said concrete structure so as to define a plurality of cavities for receiving corresponding ones of said arms therein; and, adjustably pretensioned roller bearing means arranged at said cavities for holding said arms only in a tangential direction viewed relative to the stator of the electric machine.
Claim 3
Dependent Claim
14 words
The supporting arrangement of claim 1 comprising stiffening means for mutually stiffening said arms.
Claim 4
Dependent Claim
32 words
The supporting arrangement of claim 2, said metal elements defining a plurality of U-shaped elements surrounding corresponding ones of said arms and defining mutually adjacent side walls for contacting said bearing means.
Claim 5
Dependent Claim
37 words
The supporting arrangement of claim 2, said roller bearing means being a plurality of pairs of bearings arranged at corresponding ones of said cavities, each of the bearings of each of said pairs having a spherical curvature.
Claim 6
Dependent Claim
41 words
The supporting arrangement of claim 2, said bearing means being a plurality of pairs of bearings disposed at corresponding ones of said cavities, each of the bearings of each of said pairs being pretensioned by means of a wedge arranged therein.
Claim 7
Dependent Claim
37 words
The supporting arrangement of claim 2, said roller bearing means being a plurality of pairs of bearings arranged at corresponding ones of said cavities, each of the bearings of each of said pairs having a cylindrical curvature.
Claim 8
Dependent Claim
35 words
The supporting arrangement of claim 1, said support spider being configured as an inflexible disc having a plurality of arm-like stubs extending from the circumferential periphery thereof, said arm-like stubs extending into said cavities respectively.
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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |