US3208679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding apparatus
Assignee: Cellwood Grubbens AB
•
Filing: 1962-02-15
•
Granted: 1965-09-28
•
Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 Wallen Emil Olof Lennart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:11
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/02; B02C7/06; B02C2/00; B02C2/10; B02C4/00; B02C4/10; B02C4/28; B02C4/30; D; D21; D21B; D21B1/00; D21B1/04; D21B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
GRINDING APPARATUS COMPRISING A PAIR OF MEMBERS INCLUDING SPACED OPPOSED SURFACES, EACH OF SAID SURFACES BEING PROVIDED WITH DEPRESSIONS AND BOUNDING WALL PROJECTIONS, THE DEPRESSIONS AND WALL PROJECTIONS OF RESPECTIVE SURFACES BEING OFFSET SUCH THAT THE WALL PROJECTIONS OF EACH SURFACE PROJECT INTO CORRESPONDING DEPRESSIONS IN THE OPPOSED SURFACE, MEANS SUPPORTING SAID MEMBERS OF ROTATION AT DIFFERENT SPEEDS ABOUT CONCENTRIC AXES SUCH THAT THE PROJECTIONS TRAVEL IN SAID RECESSES, EACH WALL PROJECTION BEING NARROWER THAN THE CORRESPONDING DEPRESSION TO LIE IN SPACED RELATION RELATIVE TO THE PERIMETRAL BOUNDS OF SAID DEPRESSION, EACH MEMBER INCLUDING LATERAL WALLS IN SAID DEPRESSIONS DIVIDING THE LATTER INTO A PLURALITY OF COMPARTMENTS, SAID LATERAL WALLS BEING PHOVIDED WITH RECESSES TO ACCOMMODATE CORRESPONDING PROJECTIONS AND PERMIT PASSAGE THEREOF THROUGH SAID LATERAL WALLS UPON RELATIVE RORATY MOVEMENT BETWEEN THE MEMBERS.
Claim 2
Dependent Claim
133 words
GRINDING APPARATUS COMPRISING A PAIR OF MEMBERS INCLUDING SPACED OPPOSED SURFACES, EACH OF SAID SURFACES BEING PROVIDED WITH DEPRESSIONS AND BOUNDING WALL PROJECTIONS, THE DEPRESSIONS AND WALL PROJECTIONS OF RESPECTIVE SURFACES BEING OFFSET SUCH THAT THE WALL PROJECTIONS OF EACH SURFACE PROJECT INTO CORRESPONDING DEPRESSIONS IN THE OPPOSED SURFACE, MEANS SUPPORTING SAID MEMBERS OF ROTATION AT DIFFERENT SPEEDS ABOUT CONCENTRIC AXES SUCH THAT THE PROJECTIONS TRAVEL IN SAID RECESSES, EACH WALL PROJECTION BEING NARROWER THAN THE CORRESPONDING DEPRESSION TO LIE IN SPACED RELATION RELATIVE TO THE PERIMETRAL BOUNDS OF SAID DEPRESSION, EACH MEMBER INCLUDING LATERAL WALLS IN SAID DEPRESSIONS DIVIDING THE LATTER INTO A PLURALITY OF COMPARTMENTS, SAID LATERAL WALLS BEING PHOVIDED WITH RECESSES TO ACCOMMODATE CORRESPONDING PROJECTIONS AND PERMIT PASSAGE THEREOF THROUGH SAID LATERAL WALLS UPON RELATIVE RORATY MOVEMENT BETWEEN THE MEMBERS.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |