Johnson rock crusher
Abstract
Abstract A ROCK CRUSHER INCLUDES A HEAD SUPPORTED ON AN ANNULAR CAM BY A THRUST BEARING AND A SEPARATE SINGLE RADIAL BEARING HAVING ROLLERS ROTATABLE ABOUT VERTICAL AXES BETWEEN THE HEAD AND THE CAM. THE CENTER OF GRAVITY OF THE HEAD LIES WITHIN THE CONFINES OF THE ROLLER BEARING. A BOWL IS SECURED TO A FRAME BY A RELEASABLE HOLDDOWN STRUCTURE INCLUDING A PLURALITY OF CYLINDERS WHICH PERMIT THE BOWL TO TILT UPWARDLY TO PASS NONCRUSHABLE MATERIAL. THE HOLDDOWN STRUCTURE INCLUDES SUPPORT BEAMS FORMING A RING AND CARRYING THE CYLINDER UNITS. THE BOWL INCLUDES A BONNET SUPPORT ADJUSTABLY MOUNTED ON THE FRAME BY SHIMS AND CLAMPED BY A SPLIT WEDGING RING. A SELF-CONTAINED LUBRICATION SYSTEM INCLUDES A PUMP DRIVEN BY A DRIVE OF THE CAM MEMBER, A SUMP IN THE LOWER PART OF THE FRAME AND AN OIL PASSAGE THROUGH THE CAM FROM THE PUMP TO THE BEARINGS.
Inventors
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Bibliographic Details
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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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |