US3318537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary grinding drum with panel-like lining elements
Assignee: Trelleborgs Gummifabriks AB
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Filing: 1964-11-19
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Granted: 1967-05-09
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Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Wallin Ake Wilhelm
- 👤 Persson Bo Klas Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:36
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A ROTARY GRINDING MILL, COMPRISING A SUBSTANTIALLY CYLINDRICAL ROTARY SHELL DEFINING A GRINDING CHAMBER, A LINER ON THE INNER SURFACE OF SAID SHELL, COMPRISING A PLURALITY OF RUBBER PANELS, MOUNTED IN A CLOSE SERIES AROUND THE INNER CIRCUMFERENCE OF SAID SHELL, A FIRST AND A SECOND MARGINAL PORTION ON EACH OF SAID PANELS, BEING OPPOSITELY LOCATED ON EACH OF SAID PANELS AND EXTENDING AXIALLY OF SAID SHELL, A LIFTING RIB INTEGRALLY FORMED ON SAID FIRST MARGINAL PORTION OF EACH OF SAID PANELS AND PROJECTING INTO THE GRINDING CHAMBER, A FLANGE INTEGRALLY FORMED ON SAID SECOND MARGINAL PORTION OF EACH OF SAID PANELS, SAID FLANGE BEING THINNER THAN THE REST OF SAID PANEL AND EXTENDING ALONG THE INNER SURFACE OF SAID SHELL, A NOSE INTEGRALLY FORMED ON THE FREE AXIALLY EXTENDING EDGE OF SAID FLANGE, SAID NOSE PROJECTING FROM SAID FLANGE INWARDLY TOWARDS THE CENTER AXIS OF SAID SHELL, AND MEANS ON SAID
Claim 2
Dependent Claim
152 words
A ROTARY GRINDING MILL, COMPRISING A SUBSTANTIALLY CYLINDRICAL ROTARY SHELL DEFINING A GRINDING CHAMBER, A LINER ON THE INNER SURFACE OF SAID SHELL, COMPRISING A PLURALITY OF RUBBER PANELS, MOUNTED IN A CLOSE SERIES AROUND THE INNER CIRCUMFERENCE OF SAID SHELL, A FIRST AND A SECOND MARGINAL PORTION ON EACH OF SAID PANELS, BEING OPPOSITELY LOCATED ON EACH OF SAID PANELS AND EXTENDING AXIALLY OF SAID SHELL, A LIFTING RIB INTEGRALLY FORMED ON SAID FIRST MARGINAL PORTION OF EACH OF SAID PANELS AND PROJECTING INTO THE GRINDING CHAMBER, A FLANGE INTEGRALLY FORMED ON SAID SECOND MARGINAL PORTION OF EACH OF SAID PANELS, SAID FLANGE BEING THINNER THAN THE REST OF SAID PANEL AND EXTENDING ALONG THE INNER SURFACE OF SAID SHELL, A NOSE INTEGRALLY FORMED ON THE FREE AXIALLY EXTENDING EDGE OF SAID FLANGE, SAID NOSE PROJECTING FROM SAID FLANGE INWARDLY TOWARDS THE CENTER AXIS OF SAID SHELL, AND MEANS ON SAID
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |