Patent US3606216A successfully refreshed from Google Patents.
US3606216A
Expired / Lapsed
US
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Battery powered electric knife
Assignee: Sunbeam Corp
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Filing: 1968-11-12
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Granted: 1971-09-20
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Expires: 1988-11-12
Abstract
Abstract A BATTERY OPERATED ELECTRIC KNIFE HAVING AN ELONGATED HOUSING DEFINING THE KNIFE HANDLE AND ENCLOSING AN ELECTRIC MOTOR AND BATTERY UNIT. A PAIR OF CHARGING CONTACTS ARE MOUNTED ENTIRELY WITHIN THE ELONGATED HOUSING WITH ACCESS OPENINGS THERETO AND A CHARGING AND STORAGE STAND ARE PROVIDED SHAPED TO RECEIVE THE KNIFE HANDLE IN ONLY ONE PREDETERMINED POSITION WHEREBY SAID HOUSING FOR THE ELECTRIC KNIFE MAY BE RESILIENTLY CLAMPED IN ASSEMBLED RELATIONSHIP WITH THE CHARGING UNIT. AN IMPROVED PERMANENT MAGNET ROTOR IS EMPLOYED HAVING AN OUTER FIELD MEMBER COMPRISING A RESILIENT CYLINDRICAL SHELL WITH A SLIT THEREIN.
Inventors
- 👤 Worthy L Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:06
CPC Classifications
B; B26; B26B; B26B7/00; B26B7/005; H; H02; H02K; H02K7/00; H02K7/14; H02K7/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |