US3075322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated knife sharpener
Assignee: Knapp Monarch Co
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Filing: 1960-10-03
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Granted: 1963-01-29
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 Robert D Uthoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:37
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/38; B24; B24B; B24B3/00; B24B3/36; B24B3/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A POWER OPERATED KNIFE SHARPENER COMPRISING A HOLLOW CASING, A PARTITION IN THE CASING SEPARATING IT INTO A MOTOR COMPARTMENT AND A SHARPENING WHEEL COMPARTMENT, THE PARTITION HAVING A CENTRAL OPENING THERETHROUGH, A MOTOR IN THE MOTOR COMPARTMENT HAVING A SHAFT EXTENDING THROUGH THE OPENING AND INTO THE SHARPENING WHEEL COMPARTMENT, A BLOWER WHEEL IN THE SHARPENING WHEEL COMPARTMENT SECURED TO THE SHAFT ADJACENT TO THE PARTITION TO DRAW AIR THROUGH THE OPENING IN THE PARTITION AND DISCHARGE IT INTO THE SHARPENING WHEEL COMPARTMENT, SAID CASING HAVING A VENT OPENING THEREIN BELOW A HORIZONTAL PLANE PASSING THROUGH THE SHAFT, SAID VENT OPENING BEING ADJACENT THE PERIPHERY OF THE BLOWER WHEEL SO THAT AIR MAY BE DISCHARGED THROUGH SAID VENT OPENING FROM THE SHARPENING WHEEL COMPARTMENT, AND A SHARPENING WHEEL SECURED TO THE SHAFT BEYOND THE BLOWER WHEEL, THE CASING HAVING AN OPENING THEREIN THROUGH WHICH A KNIFE TO BE SHARPENED MAY BE INSERTED TO ENGAGE THE SHARPENING WHEEL.
Claim 2
Dependent Claim
158 words
A POWER OPERATED KNIFE SHARPENER COMPRISING A HOLLOW CASING, A PARTITION IN THE CASING SEPARATING IT INTO A MOTOR COMPARTMENT AND A SHARPENING WHEEL COMPARTMENT, THE PARTITION HAVING A CENTRAL OPENING THERETHROUGH, A MOTOR IN THE MOTOR COMPARTMENT HAVING A SHAFT EXTENDING THROUGH THE OPENING AND INTO THE SHARPENING WHEEL COMPARTMENT, A BLOWER WHEEL IN THE SHARPENING WHEEL COMPARTMENT SECURED TO THE SHAFT ADJACENT TO THE PARTITION TO DRAW AIR THROUGH THE OPENING IN THE PARTITION AND DISCHARGE IT INTO THE SHARPENING WHEEL COMPARTMENT, SAID CASING HAVING A VENT OPENING THEREIN BELOW A HORIZONTAL PLANE PASSING THROUGH THE SHAFT, SAID VENT OPENING BEING ADJACENT THE PERIPHERY OF THE BLOWER WHEEL SO THAT AIR MAY BE DISCHARGED THROUGH SAID VENT OPENING FROM THE SHARPENING WHEEL COMPARTMENT, AND A SHARPENING WHEEL SECURED TO THE SHAFT BEYOND THE BLOWER WHEEL, THE CASING HAVING AN OPENING THEREIN THROUGH WHICH A KNIFE TO BE SHARPENED MAY BE INSERTED TO ENGAGE THE SHARPENING WHEEL.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |