US3244919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for small electric motors
Assignee: US Philips Corp
•
Filing: 1963-03-12
•
Granted: 1966-04-05
•
Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Drenth Thijs
- 👤 Ettema Everhardus Catharinus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A ROTOR ASSEMBLY COMPRISING A SET OF LAMINATIONS CONCENTRICALLY SURROUNDING A SHAFT IN SPACED RELATION THEREWITH AND INTERMEDIATE THE ENDS THEREOF, A JACKET OF SYNTHETIC RESIN MATERIAL FORMED IN SITU FOR SECURING SAID LAMINATIONS AND THE ADJACENT SHAFT SURFACE IN CONCENTRIC RELATION AND LEAVING THE END PORTION OF SAID SHAFT EXPOSED, SAID JACKET HAVING COLLARS INTEGRAL THEREWITH EXTENDING INWARDLY ALONG SAID SHAFT BETWEEN SAID SHAFT AND THE ADJACENT SURFACE OF SAID SET OF LAMINATIONS, SAID JACKET HAVING AN ANNULAR OUTWARDLY PROJECTING FLANGE AT EACH END IN SPACED SUBSTANTIALLY PARALLEL RELATION ADJACENT TO THE EXPOSED PORTIONS OF SAID SHAFT AND ANOTHER ANNULAR OUTWARDLY PROJECTING FLANGE AT EACH END SUBSTANTIALLY PARALLEL WITH SAID FIRST MENTIONED FLANGE ADJACENT THE PERIPHERY OF SAID LAMINATIONS.
Claim 2
Dependent Claim
120 words
A ROTOR ASSEMBLY COMPRISING A SET OF LAMINATIONS CONCENTRICALLY SURROUNDING A SHAFT IN SPACED RELATION THEREWITH AND INTERMEDIATE THE ENDS THEREOF, A JACKET OF SYNTHETIC RESIN MATERIAL FORMED IN SITU FOR SECURING SAID LAMINATIONS AND THE ADJACENT SHAFT SURFACE IN CONCENTRIC RELATION AND LEAVING THE END PORTION OF SAID SHAFT EXPOSED, SAID JACKET HAVING COLLARS INTEGRAL THEREWITH EXTENDING INWARDLY ALONG SAID SHAFT BETWEEN SAID SHAFT AND THE ADJACENT SURFACE OF SAID SET OF LAMINATIONS, SAID JACKET HAVING AN ANNULAR OUTWARDLY PROJECTING FLANGE AT EACH END IN SPACED SUBSTANTIALLY PARALLEL RELATION ADJACENT TO THE EXPOSED PORTIONS OF SAID SHAFT AND ANOTHER ANNULAR OUTWARDLY PROJECTING FLANGE AT EACH END SUBSTANTIALLY PARALLEL WITH SAID FIRST MENTIONED FLANGE ADJACENT THE PERIPHERY OF SAID LAMINATIONS.
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Cited
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |