Patent US3071899A successfully refreshed from Google Patents.
US3071899A
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US
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Knife sharpener
Assignee: General Electric Co
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Filing: 1961-02-24
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Granted: 1963-01-08
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Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 William R Hicks
- 👤 Bernard E Oehlbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:03
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/54; Y; Y10; Y10S; Y10S464/00; Y10S464/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A KNIFE SHARPENER COMPRISING: A POWER UNIT HAVING A MOTOR DRIVEN FIRST SHAFT, A GRINDING WHEEL CASING, MEANS FOR DETACHABLY CONNECTING SAID CASING TO SAID POWER UNIT, A SECOND SHAFT CARRIED BY SAID CASING AND POSITIONED SO AS TO BE IN AXIAL ALIGNMENT WITH SAID FIRST SHAFT WHEN THE CASING IS CONNECTED TO SAID POWER UNIT, A GRINDING WHEEL CARRIED BY SAID CASING, SAID SECOND SHAFT BEING IN DRIVING ENGAGEMENT WITH SAID WHEEL, AND FRICTIONAL CLUTCH MEANS FOR COUPLING SAID SECOND SHAFT TO SAID FIRST SHAFT INCLUDING A COUPLER EXTENDING AXIALLY FROM SAID SECOND SHAFT INTO ABUTTING FRICTIONAL ENGAGEMENT WITH AN END PORTION OF SAID FIRST SHAFT WHEN SAID CASING IS CONNECTED TO SAID POWER UNIT, AND UNIVERSAL JOINT MEANS CONNECTING SAID COUPLER TO SAID SECOND SHAFT.
Claim 2
Dependent Claim
127 words
A KNIFE SHARPENER COMPRISING: A POWER UNIT HAVING A MOTOR DRIVEN FIRST SHAFT, A GRINDING WHEEL CASING, MEANS FOR DETACHABLY CONNECTING SAID CASING TO SAID POWER UNIT, A SECOND SHAFT CARRIED BY SAID CASING AND POSITIONED SO AS TO BE IN AXIAL ALIGNMENT WITH SAID FIRST SHAFT WHEN THE CASING IS CONNECTED TO SAID POWER UNIT, A GRINDING WHEEL CARRIED BY SAID CASING, SAID SECOND SHAFT BEING IN DRIVING ENGAGEMENT WITH SAID WHEEL, AND FRICTIONAL CLUTCH MEANS FOR COUPLING SAID SECOND SHAFT TO SAID FIRST SHAFT INCLUDING A COUPLER EXTENDING AXIALLY FROM SAID SECOND SHAFT INTO ABUTTING FRICTIONAL ENGAGEMENT WITH AN END PORTION OF SAID FIRST SHAFT WHEN SAID CASING IS CONNECTED TO SAID POWER UNIT, AND UNIVERSAL JOINT MEANS CONNECTING SAID COUPLER TO SAID SECOND SHAFT.
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |