US3238404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping of stacks of core laminations for electrical machines
Assignee: Maschinenfabrik Oerlikon AG
•
Filing: 1962-02-12
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Granted: 1966-03-01
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Expires: 1982-02-12
Abstract
No abstract record available.
Inventors
- 👤 Spiess Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:31
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN AN ELECTRICAL MACHINE, A STATOR CORE COMPRISING A STACK OF LAMINATIONS, A PLURALITY OF INDEPENDENT CLAMPING SEGMENTS AT EACH END OF THE STACK ARRANGED IN AN ANNULAR PATTERN, TIE BOLTS EXTENDING ADJACENT TO THE OUTER PERIPHERY OF THE STACK AND BETWEEN CORRESPONDING CLAMPING SEGMENTS AT OPPOSITE ENDS OF THE STACK, A PROJECTION EXTENDING AXIALLY FROM EACH SEGMENT AND HAVING A BEARING SURFACE FACING RADIALLY OUTWARDLY AND AXIALLY SPACED FROM THE STACK, AND A RING CONCENTRIC WITH SAID CORE AND ENGAGING ALL OF SAID BEARING SURFACES FOR APPLYING A RADIALLY INWARD FORCE TO EACH OF SAID BEARING SURFACES.
Claim 2
Dependent Claim
98 words
IN AN ELECTRICAL MACHINE, A STATOR CORE COMPRISING A STACK OF LAMINATIONS, A PLURALITY OF INDEPENDENT CLAMPING SEGMENTS AT EACH END OF THE STACK ARRANGED IN AN ANNULAR PATTERN, TIE BOLTS EXTENDING ADJACENT TO THE OUTER PERIPHERY OF THE STACK AND BETWEEN CORRESPONDING CLAMPING SEGMENTS AT OPPOSITE ENDS OF THE STACK, A PROJECTION EXTENDING AXIALLY FROM EACH SEGMENT AND HAVING A BEARING SURFACE FACING RADIALLY OUTWARDLY AND AXIALLY SPACED FROM THE STACK, AND A RING CONCENTRIC WITH SAID CORE AND ENGAGING ALL OF SAID BEARING SURFACES FOR APPLYING A RADIALLY INWARD FORCE TO EACH OF SAID BEARING SURFACES.
References Cited (Backward Citations)
US491970A
Cited
US1123085A
Cited
US1403179A
Cited
US1477773A
Cited
US1661135A
Cited
US1685054A
Cited
US1685742A
Cited
US2653208A
Cited
US2636137A
Cited
US2703849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |