US3624432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for securing electrical conductor bars within slots to prevent vibration
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1969-12-19
•
Granted: 1971-11-30
•
Expires: 1989-12-19
Abstract
Abstract A dynamoelectric machine including an arrangement for securing conductor bars in their respective slots in the iron body thereof for preventing conductor vibration. A tubular member is located in each slot and extends parallel with the conductor bar. The tubular member is made from an elastic nonmagnetic material and is connected to a fluid pressure source by means of which the fluid pressure established within the tubular member is imparted to the conductor bar. The fluid pressure within the tubular members may be static, i.e. noncirculating, or the pressurized fluid, either liquid or gas, may be made to circulate through the tubular members, in which case a cooler unit may also be incorporated in the circulating system so as to remove heat developed in the slots by the conductor bars and which is transferred to the fluid.
Inventors
- 👤 Karl Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:12
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/48; H02K3/04; H02K3/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
131 words
An arrangement for securing conductor bars in their respective radially extending slots in the iron body of a dynamoelecTric machine to prevent vibration of the conductor bars, the entrance end to each slot being closed by a key extending along the slot, the slot space between the key and the base of each said slot including a fluid-filled tubular member made from elastic nonmagnetic material extending lengthwise in the slot for completely filling out said slot, a fluid pressurizing generator connected to each elastic tubular member for establishing preselected constant pressure on the fluid within said tubular member thus effecting elastic deformation of said tubular member in a radial direction, and from which deformation a corresponding pressure acting in the radial direction of said slot is imparted to said conductor bar.
Claim 2
Dependent Claim
131 words
An arrangement for securing conductor bars in their respective radially extending slots in the iron body of a dynamoelecTric machine to prevent vibration of the conductor bars, the entrance end to each slot being closed by a key extending along the slot, the slot space between the key and the base of each said slot including a fluid-filled tubular member made from elastic nonmagnetic material extending lengthwise in the slot for completely filling out said slot, a fluid pressurizing generator connected to each elastic tubular member for establishing preselected constant pressure on the fluid within said tubular member thus effecting elastic deformation of said tubular member in a radial direction, and from which deformation a corresponding pressure acting in the radial direction of said slot is imparted to said conductor bar.
Claim 3
Dependent Claim
23 words
A conductor bar securing arrangement as defined in claim 1 wherein the cross section of said elastic tubular member has a rectangular configuration.
Claim 4
Dependent Claim
21 words
A conductor bar securing arrangement as defined in claim 1 wherein said elastic tubular member is made from a synthetic resin.
Claim 5
Dependent Claim
26 words
A conductor bar securing arrangement as defined in claim 1 wherein a gas such as carbon dioxide serves as said pressurized fluid within said tubular member.
Claim 6
Dependent Claim
30 words
A conductor bar securing arrangement as defined in claim 1 wherein said fluid pressurized tubular member is located within said slot between said slot-closing key and the electrical conductor bar.
Claim 7
Dependent Claim
25 words
A conductor bar securing arrangement as defined in claim 1 and wherein said tubular members are connected in common to the same fluid pressurizing generator.
Claim 8
Dependent Claim
24 words
A conductor bar securing arrangement as defined in claim 6 wherein said tubular members are connected in parallel to said common fluid pressurizing generator.
Claim 9
Dependent Claim
24 words
A conductor bar securing arrangement as defined in claim 6 wherein said tubular members are connected in series to said common fluid pressurizing generator.
Claim 10
Dependent Claim
24 words
A conductor bar securing arrangement as defined in claim 6 wherein said tubular members are connected in series-parallel to said common fluid pressurizing generator.
Claim 11
Dependent Claim
59 words
A conductor bar securing arrangement as defined in claim 1 wherein each said tubular member is connected at one end to said fluid pressurizing generator and the other end thereof is connected to a valve which is kept closed during operation of the device thereby establishing a noncirculating type of fluid feed to said tubular members from said generator.
Claim 12
Dependent Claim
54 words
A conductor bar securing arrangement as defined in claim 10 wherein said tubular members are connected in parallel and which further includes manifolding at one end of said tubular members for connecting them to said fluid pressurizing generator and manifolding at the other end of said tubular members for connecting them to said valve.
Claim 13
Dependent Claim
67 words
A conductor bar securing arrangement as defined in claim 10 wherein said tubular members are arranged in a plurality of groups of series connected tubular members and said groups are connected in parallel, one end of each group of series connected tubular members being connected to said fluid pressurizing generator and the other end of each group of series connected tubular members being connected to said valve.
Claim 14
Dependent Claim
22 words
A conductor bar securing arrangement as defined in claim 1 wherein a liquid serves as said pressurized fluid within said tubular member.
References Cited (Backward Citations)
US2727161A
Cited
US2821641A
Cited
US2873393A
Cited
US2999945A
Cited
US2975308A
Cited
US3010038A
Cited
US2988656A
Cited
US3214617A
Cited
US3488532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |