Patent US995537A successfully refreshed from Google Patents.
Patent US3204882A successfully refreshed from Google Patents.
US3204882A
Expired / Lapsed
US
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Rock crusher
Assignee: PETTIBOUTE MULLIKEN Corp
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Filing: 1962-06-15
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Granted: 1965-09-07
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Paul R Vifian
- 👤 Albert B Hanse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:48
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1814
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A ROCK CRUSHER HAVING A TABLE ROTATING ABOUT A VERTICAL AXIS WITH THE ROCK BEING DEPOSITED ON A CENTRAL PORTION THEREOF AND THROWN OFF BY THE ROTATION IN A GIVEN DIRECTION, AND A REPLACEABLE SHOE ABOVE THE TABLE, RELEASABLY AFFIXED THERETO AND ADJACENT THE PERIPHERY OF THE TABLE WITH A FORWARD, WITH RESPECT TO THE DIRECTION OF ROTATION, FACE TO PROPEL THE ROCK FROM THE TABLE, THE IMPROVEMENT COMPRISING: SAID FACE BEING POSITIONED ANGULARLY WITH RESPECT TO A RADIAL LINE FROM SAID AXIS THROUGH THE SHOE, THE ANGULAR POSITION BEING SUCH THAT THE INNER END OF THE SHOE IS FORWARDLY AND THE OUTER END IS REARWARDLY WITH RESPECT TO SAID DIRECTION OF ROTATION; AND A BAFFLE COMMENCING AT THE INNER END OF THE SHOE AND EXTENDING REARWARDLY THEREFROM TO INITIALLY CONFINE THE ROCK TO THE CENTRAL PORTION OF THE TABLE AND CAUSE IT TO FLOW OUTWARDLY ABOUT THE INNER END OF THE SHOE.
Claim 2
Dependent Claim
154 words
IN A ROCK CRUSHER HAVING A TABLE ROTATING ABOUT A VERTICAL AXIS WITH THE ROCK BEING DEPOSITED ON A CENTRAL PORTION THEREOF AND THROWN OFF BY THE ROTATION IN A GIVEN DIRECTION, AND A REPLACEABLE SHOE ABOVE THE TABLE, RELEASABLY AFFIXED THERETO AND ADJACENT THE PERIPHERY OF THE TABLE WITH A FORWARD, WITH RESPECT TO THE DIRECTION OF ROTATION, FACE TO PROPEL THE ROCK FROM THE TABLE, THE IMPROVEMENT COMPRISING: SAID FACE BEING POSITIONED ANGULARLY WITH RESPECT TO A RADIAL LINE FROM SAID AXIS THROUGH THE SHOE, THE ANGULAR POSITION BEING SUCH THAT THE INNER END OF THE SHOE IS FORWARDLY AND THE OUTER END IS REARWARDLY WITH RESPECT TO SAID DIRECTION OF ROTATION; AND A BAFFLE COMMENCING AT THE INNER END OF THE SHOE AND EXTENDING REARWARDLY THEREFROM TO INITIALLY CONFINE THE ROCK TO THE CENTRAL PORTION OF THE TABLE AND CAUSE IT TO FLOW OUTWARDLY ABOUT THE INNER END OF THE SHOE.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |