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US3202369A
Expired / Lapsed
US
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Rotary sheet metal tearing devices
Assignee: STEEL BRIQUETTE CORP
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Filing: 1963-01-16
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Granted: 1965-08-24
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Sebastian F Judd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:18
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/0056; B02C19/0062; B02C18/00; B02C18/06; B02C18/14; B02C18/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A DEVICE FOR TEARING SHEET METAL SCRAP COMPRISING A HOUSING HAVING A RECEIVING OPENING, A DRUM-SHAPED ROTOR ROTATABLY MOUNTED IN SAID HOUSING, A FIXED SHEARING MEANS HAVING A SERRATED CUTTING EDGE SUPPORTED ADJACENT THE PERIPHERY OF THE ROTOR AND EXTENDING SUBSTANTIALLY THE LENGTH THEREOF AND HAVING A SERIES OF PROJECTING POINTS DEFINING V-NOTCHES BETWEEN POINTS, AND A PLURALITY OF SHEAR KNIVES WHICH ARE V-SHAPED IN PLAN VIEW AND WHICH HAVE POINTS PROJECTING FROM THE PERIPHERY OF SAID ROTOR EACH SHAPED TO COOPERATE WITH ONE OF THE V-NOTCHES IN SHEARING OUT A PIECE OF METAL FROM THE LEADING EDGE OF SCRAP FED INTO SAID RECEIVING OPENING, SAID FIXED SHEARING MEANS BEING ANGLED DOWNWARDLY AND FORWARDLY TOWARD THE ROTOR AND THE SHEAR KNIVES OF THE ROTOR BEING SO POSITIONED WITH RESPECT TO THE ANGLE OF THE FIXED SHERING
Claim 2
Independent Claim
136 words
A DEVICE FOR TEARING SHEET METAL SCRAP COMPRISING A HOUSING HAVING A RECEIVING OPENING, A DRUM-SHAPED ROTOR ROTATABLY MOUNTED IN SAID HOUSING, A FIXED SHEARING MEANS HAVING A SERRATED CUTTING EDGE SUPPORTED ADJACENT THE PERIPHERY OF THE ROTOR AND EXTENDING SUBSTANTIALLY THE LENGTH THEREOF AND HAVING A SERIES OF PROJECTING POINTS DEFINING V-NOTCHES BETWEEN POINTS, AND A PLURALITY OF SHEAR KNIVES WHICH ARE V-SHAPED IN PLAN VIEW AND WHICH HAVE POINTS PROJECTING FROM THE PERIPHERY OF SAID ROTOR EACH SHAPED TO COOPERATE WITH ONE OF THE V-NOTCHES IN SHEARING OUT A PIECE OF METAL FROM THE LEADING EDGE OF SCRAP FED INTO SAID RECEIVING OPENING, SAID FIXED SHEARING MEANS BEING ANGLED DOWNWARDLY AND FORWARDLY TOWARD THE ROTOR AND THE SHEAR KNIVES OF THE ROTOR BEING SO POSITIONED WITH RESPECT TO THE ANGLE OF THE FIXED SHERING
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |