Patent US3316429A successfully refreshed from Google Patents.
US3316429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductor drum and supporting construction for electromagnetic machines
Assignee: Eaton Corp
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Filing: 1964-02-03
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Granted: 1967-04-25
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Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Jaeschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:37
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN INTEGRAL DRUM AND SUPPORTING QUILL ASSEMBLY FOR ELECTROMAGNETIC MACHINES COMPRISING A DRUM FORMED OF IRON AND SPACEDLY NOTCHED AROUND ONE MARGING THEREOF, A QUILL FORMED OF ALUMINUM WHICH IS CAST AGAINST SAID MARGIN OF THE DURM TO FORM A CONTINUOUS RING ABUTMENT WITH SAID MARGIN AND TO FORM LOCK AND KEY CONNECTIONS BETWEEN THE NOTCHES AND CAST MATERIAL WHICH EXTENDS FROM SAID CONTINUOS RING INTO THE NOTCHES, AND CIRCULAR SEGMENTAL PORTION EXTENDING FROM SAID CONTINUOUS RING
Claim 2
Dependent Claim
77 words
AN INTEGRAL DRUM AND SUPPORTING QUILL ASSEMBLY FOR ELECTROMAGNETIC MACHINES COMPRISING A DRUM FORMED OF IRON AND SPACEDLY NOTCHED AROUND ONE MARGING THEREOF, A QUILL FORMED OF ALUMINUM WHICH IS CAST AGAINST SAID MARGIN OF THE DURM TO FORM A CONTINUOUS RING ABUTMENT WITH SAID MARGIN AND TO FORM LOCK AND KEY CONNECTIONS BETWEEN THE NOTCHES AND CAST MATERIAL WHICH EXTENDS FROM SAID CONTINUOS RING INTO THE NOTCHES, AND CIRCULAR SEGMENTAL PORTION EXTENDING FROM SAID CONTINUOUS RING
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |