US3909642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine
Assignee: General Electric Co
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Filing: 1973-06-28
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Granted: 1975-09-30
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Expires: 1993-06-28
Abstract
Abstract Rotatable assembly of dynamoelectric machine is provided with at least one spacer that is collapsed from an initial length, in its free form, to a preselected length in its final configuration, to provide means for controlling end play of the assembly and for establishing a desired alignment of the assembly with the stationary structure of the machine. Collapsing the spacer reduces an internal diameter of the spacer and rigidly secures the spacer to a shaft portion of the assembly. Axial length of a thrust member is reduced to a preselected length relative to a reference portion of a rotatable assembly and the length of a second thrust member may also be reduced to establish a preselected distance between two thrust surfaces. Disclosed apparatus includes a pair of opposed rams having spacer collapsing tooling that includes anvil means for collapsing the spacers and abutment means for engaging other portions of a rotatable assembly. A lost motion mechanism interconnects one of the anvil means and one of the abutment means.
Inventors
- 👤 Vincent V Busian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:20
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/28; H02K15/00; H02K15/02; H02K15/028; H02K15/16; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A dynamoelectric machine comprising a stationary magnetic structure and a rotatable assembly including a shaft supported for rotation relative to the stationary magnetic structure and a rotatable magnetic structure secured to the shaft, the rotatable assembly further including spacer means for restricting end play of the rotatable assembly relative to the stationary magnetic structure and for aligning the rotatable and stationary magnetic structures relative to one another, said spacer means comprising at least one spacer in the form of an integral tubular sleeve mounted about the shaft and having an axial length when mounted about the shaft less than its length in its free form, said spacer having a buckled portion when mounted about the shaft with at least one undulation along the buckled portion rigidly securing the spacer as a part of the rotatable assembly.
Claim 2
Dependent Claim
136 words
A dynamoelectric machine comprising a stationary magnetic structure and a rotatable assembly including a shaft supported for rotation relative to the stationary magnetic structure and a rotatable magnetic structure secured to the shaft, the rotatable assembly further including spacer means for restricting end play of the rotatable assembly relative to the stationary magnetic structure and for aligning the rotatable and stationary magnetic structures relative to one another, said spacer means comprising at least one spacer in the form of an integral tubular sleeve mounted about the shaft and having an axial length when mounted about the shaft less than its length in its free form, said spacer having a buckled portion when mounted about the shaft with at least one undulation along the buckled portion rigidly securing the spacer as a part of the rotatable assembly.
Claim 3
Dependent Claim
32 words
The dynamoelectric machine of claim 1 wherein said at least one spacer comprises a compressed member having a surface region spaced a preselected distance from a reference portion of the rotatable assembly.
Claim 4
Dependent Claim
148 words
A rotatable assembly for a dynamoelectric machine having a stationary magnetic structure said assembly comprising a shaft, a magnetic core secured to the shaft, and means for restricting end play of the assembly relative to a stationary magnetic structure, said means for restricting end play including a rigid thrust member in the form of an integral tubular sleeve mounted about the shaft and having a buckled portion in rigid engagement with at least one part of the assembly, said rigid thrust member having a portion thereof bearing against a thrust member engaging surface of the assembly and having a surface region spaced a preselected distance from a reference portion of the assembly, the location of the surface region being determined by the application of a collapsing and buckling force thereto while said portion of the thrust member is bearing against the thrust member engaging surface of the assembly.
Claim 5
Dependent Claim
148 words
A rotatable assembly for a dynamoelectric machine having a stationary magnetic structure said assembly comprising a shaft, a magnetic core secured to the shaft, and means for restricting end play of the assembly relative to a stationary magnetic structure, said means for restricting end play including a rigid thrust member in the form of an integral tubular sleeve mounted about the shaft and having a buckled portion in rigid engagement with at least one part of the assembly, said rigid thrust member having a portion thereof bearing against a thrust member engaging surface of the assembly and having a surface region spaced a preselected distance from a reference portion of the assembly, the location of the surface region being determined by the application of a collapsing and buckling force thereto while said portion of the thrust member is bearing against the thrust member engaging surface of the assembly.
Claim 6
Dependent Claim
60 words
The rotatable assembly of claim 3 wherein the thrust member engaging surface comprises the reference portion of the assembly and the rigid thrust member comprises a spacer carried by the shaft, the spacer being collapsed in an axial direction an amount equal to the differnce between the free length of the spacer in an uncollapsed condition and said preselected distance.
Claim 7
Dependent Claim
42 words
The rotatable assembly of claim 3 wherein the thrust member comprises a spacer having an axial length and internal diameter, when mounted about the shaft, less than the axial length and internal diameter thereof while in a free form prior to assembly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |