Patent US3260875A successfully refreshed from Google Patents.
US3260875A
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Dynamoelectric machine core and method of making same
Assignee: Allis Chalmers Corp
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Filing: 1963-08-30
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Granted: 1966-07-12
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Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Earl S Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:43
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/18; H02K1/185; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49075; Y10T29/49078; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A CORE FOR A DYNAMOELECTRIC MACNINE COMPRISING A CYLINDRICAL SHELL, ARCUATELY SPACED MOUNTING BARS ATTACHED TO THE INTERIOR SURFACE OF SAID SHELL, IRON LAMINATIONS STACKED IN SAID SHELL FROM A CORE, SAID LAMINATIONS HAVING GROOVES IN THEIR RADIALLY OUTER EDGE ENGAGING SAID MOUNTING BARS, MEANS FOR COMPRESSING SAID LAMINATIONS AXIALLY OF SAID SHELL, CLAMPING MEANS FOR HOLDING SAID LAMINATIONS IN PLACE, LONGITUDINALLY EXTENDING GROOVES IN THE OUTER SURFACE OF SAID SHELL AND WELDING MATERIAL IN SAID GROOVES TO SHRINK SAID SHELL AND EXERT RADIAL PRESSURE ON SAID STACKED LAMINATIONS.
Claim 2
Dependent Claim
89 words
A CORE FOR A DYNAMOELECTRIC MACNINE COMPRISING A CYLINDRICAL SHELL, ARCUATELY SPACED MOUNTING BARS ATTACHED TO THE INTERIOR SURFACE OF SAID SHELL, IRON LAMINATIONS STACKED IN SAID SHELL FROM A CORE, SAID LAMINATIONS HAVING GROOVES IN THEIR RADIALLY OUTER EDGE ENGAGING SAID MOUNTING BARS, MEANS FOR COMPRESSING SAID LAMINATIONS AXIALLY OF SAID SHELL, CLAMPING MEANS FOR HOLDING SAID LAMINATIONS IN PLACE, LONGITUDINALLY EXTENDING GROOVES IN THE OUTER SURFACE OF SAID SHELL AND WELDING MATERIAL IN SAID GROOVES TO SHRINK SAID SHELL AND EXERT RADIAL PRESSURE ON SAID STACKED LAMINATIONS.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |