Patent US3825013A successfully refreshed from Google Patents.
Patent US3345898A successfully refreshed from Google Patents.
US3345898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary knife
Assignee: Individual
•
Filing: 1965-07-19
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Granted: 1967-10-10
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Norman E Dovey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/28; B23P15/40; B23P15/406; B26; B26F; B26F1/00; B26F1/38; B26F1/384; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9457; Y10T83/9464
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN THE COMBINATION OF A ROTARY KNIFE SUPPORT WITH AN OUTER CYLINDRICAL SURFACE, SAID KNIFE SUPPORT HAVING A KNIFE MOUNTING GROOVE DEFINED BY SIDE WALLS SPACED A GIVEN DISTANCE APART AND A BOTTOM WALL EXTENDING BETWEEN SAID SIDE WALLS; AND A THIN RULE KNIFE FORMED FROM A SINGLE PIECE OF SHEET METAL HAVING A THICKNESS SUBSTANTIALLY LESS THAN SAID DISTANCE, SAID KNIFE BEING MOUNTED IN SAID GROOVE AND HAVING AN UPSTANDING BODY PORTION, AN UPPER CUTTING EDGE, AND A LOWER SUPPORT END, THE IMPROVEMENT COMPRISING: NOTCHES AXIALLY SPACED ALONG AND TERMINATING AT SAID LOWER SUPPORT END OF SAID KNIFE; SAID NOTCHES DEFINING SHEET METAL TABS SPACED ALONG SAID LOWER END OF SAID KNIFE; SAID TABS HAVING TERMINAL PORTIONS BENT TO EXTEND TRANSVERSELY OF SAID KNIFE AND FORM A PLURALITY OF SPACED SHEET METAL LUGS WITH OUTBOARD LOCATING EDGES GENERALLY PARALLEL TO SAID CUTTING EDGE OF SAID KNIFE; AND EACH OF SAID LOCATING EDGE ABUTTING ONE OF SAID SIDE WALLS TO LOCATE SAID BODY PORTION IN A SELECTED POSITION IN SAID GROOVE.
Claim 2
Dependent Claim
171 words
IN THE COMBINATION OF A ROTARY KNIFE SUPPORT WITH AN OUTER CYLINDRICAL SURFACE, SAID KNIFE SUPPORT HAVING A KNIFE MOUNTING GROOVE DEFINED BY SIDE WALLS SPACED A GIVEN DISTANCE APART AND A BOTTOM WALL EXTENDING BETWEEN SAID SIDE WALLS; AND A THIN RULE KNIFE FORMED FROM A SINGLE PIECE OF SHEET METAL HAVING A THICKNESS SUBSTANTIALLY LESS THAN SAID DISTANCE, SAID KNIFE BEING MOUNTED IN SAID GROOVE AND HAVING AN UPSTANDING BODY PORTION, AN UPPER CUTTING EDGE, AND A LOWER SUPPORT END, THE IMPROVEMENT COMPRISING: NOTCHES AXIALLY SPACED ALONG AND TERMINATING AT SAID LOWER SUPPORT END OF SAID KNIFE; SAID NOTCHES DEFINING SHEET METAL TABS SPACED ALONG SAID LOWER END OF SAID KNIFE; SAID TABS HAVING TERMINAL PORTIONS BENT TO EXTEND TRANSVERSELY OF SAID KNIFE AND FORM A PLURALITY OF SPACED SHEET METAL LUGS WITH OUTBOARD LOCATING EDGES GENERALLY PARALLEL TO SAID CUTTING EDGE OF SAID KNIFE; AND EACH OF SAID LOCATING EDGE ABUTTING ONE OF SAID SIDE WALLS TO LOCATE SAID BODY PORTION IN A SELECTED POSITION IN SAID GROOVE.
References Cited (Backward Citations)
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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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |