Patent US3133728A successfully refreshed from Google Patents.
US3133728A
Expired / Lapsed
US
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Agitator and conveyor for viscous cohesive material
Assignee: S AND M Manufacturing CO
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Filing: 1962-12-11
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Granted: 1964-05-19
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Expires: 1982-12-11
Abstract
No abstract record available.
Inventors
- 👤 Harold C Janke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:47
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4282; B28C5/4286
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A BLADE FOR AGITATORS AND CONVEYORS OF THE CHARACTER DESCRIBED COMPRISING: A PAIR OF ELONGATED SHEET METAL BLADE ELEMENTS, EACH HAVING LENGTHWISE EXTENDING LEADING AND TRAILING EDGES, SAID BLADE ELEMENTS BEING CURVED ACROSS THEIR WIDTHS TO DIFFERENT RADII AND BEING SECURED TOGETHER, ALONG THEIR LENGTHS, WITH THEIR LEADING AND TRAILING EDGE PORTIONS RESPECTIVELY ADJACENT TO ONE ANOTHER, AND WITH THE CONCAVE SURFACE OF THE BLADE ELEMENT THAT IS CURVED TO THE SMALLER RADIUS FACING THE CONVEX
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |