Patent US3197147A successfully refreshed from Google Patents.
US3197147A
Expired / Lapsed
US
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High speed stress plane material pulverizer
Assignee: AMF Inc
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Filing: 1962-06-15
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Granted: 1965-07-27
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hans G Krohne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:59
CPC Classifications
B; B02; B02C; B02C19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PULVERIZER HAVING A ROTOR, A MATERIAL PULVERIZING ELEMENT ON SAID ROTOR, SAID ELEMENT HAVING A HELICAL, OR SCREW-THREAD-LIKE, PROJECTION FORMED ON THE PERIPHERY OF SAID ROTOR, A CASING SNUGLY ENCLOSING SAID PROJECTION AND MEANS FOR DRIVING SAID ELEMENT AT A CIRCUMFERENTIAL SPEED OF MORE THAN 300 FEET PER SECOND TO PULVERIZE MATERIAL.
Claim 2
Dependent Claim
53 words
A PULVERIZER HAVING A ROTOR, A MATERIAL PULVERIZING ELEMENT ON SAID ROTOR, SAID ELEMENT HAVING A HELICAL, OR SCREW-THREAD-LIKE, PROJECTION FORMED ON THE PERIPHERY OF SAID ROTOR, A CASING SNUGLY ENCLOSING SAID PROJECTION AND MEANS FOR DRIVING SAID ELEMENT AT A CIRCUMFERENTIAL SPEED OF MORE THAN 300 FEET PER SECOND TO PULVERIZE MATERIAL.
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |