Patent US3908916A successfully refreshed from Google Patents.
US3908916A
Expired / Lapsed
US
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Gyratory crusher
Assignee: Individual
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Filing: 1973-11-07
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Granted: 1975-09-30
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Expires: 1993-11-07
Abstract
Abstract A gyratory crusher with a movable crushing head whose center of oscillation is provided below a crushing chamber of the machine. The shaft of the crushing head is hollow and passing inside the hollow shaft is an eccentric shaft whose eccentric is connected to the upper end of the crushing head shaft. A drive rotating the eccentric shaft is provided in the lower portion of the crusher frame and connected to the lower end of the eccentric shaft. Such a construction permits the lower arrangement of the center of oscillation of the crushing head to be retained and avoids the necessity of arranging the eccentric shaft drive in the upper portion of the crusher frame. Hence charging of the crusher with a material to be processed is facilitated and the balancing of the crusher achieved.
Inventors
- 👤 Boris Vasilievich Klushantsev
- 👤 Genrikh Alexandrovic Speransky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:10
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A gyratory crusher comprising: a frame having an upper and lower portion; a stationary crushing bowl; a movable crushing head cooperating with the stationary crushing bowl and having a substantially vertically disposed hollow shaft whose lower end is supported for gyratory motion in the lower portion of said frame; a substantially vertically disposed eccentric shaft having an eccentric on its upper end which end is disposed in the upper portion of said frame, said eccentric shaft passing through the hollow space of said hollow shaft, said hollow shaft being coupled at its upper end with said eccentric; drive means provided in the lower portion of said frame and kinematically coupled with the lower end of said eccentric shaft; said hollow shaft being supported for gyratory motion at its lower end on a sleeve; said sleeve being concentrically mounted with respect to the eccentric shaft so as to permit longitudinal movement thereof and having screw threads and a nut mounted on said screw threads in rotational engagement therewith; said nut being secured to the lower portion of said frame to prevent the nut from longitudinal displacement when the nut is rotated; and said nut being kinematically coupled with a drive means.
Claim 2
Dependent Claim
200 words
A gyratory crusher comprising: a frame having an upper and lower portion; a stationary crushing bowl; a movable crushing head cooperating with the stationary crushing bowl and having a substantially vertically disposed hollow shaft whose lower end is supported for gyratory motion in the lower portion of said frame; a substantially vertically disposed eccentric shaft having an eccentric on its upper end which end is disposed in the upper portion of said frame, said eccentric shaft passing through the hollow space of said hollow shaft, said hollow shaft being coupled at its upper end with said eccentric; drive means provided in the lower portion of said frame and kinematically coupled with the lower end of said eccentric shaft; said hollow shaft being supported for gyratory motion at its lower end on a sleeve; said sleeve being concentrically mounted with respect to the eccentric shaft so as to permit longitudinal movement thereof and having screw threads and a nut mounted on said screw threads in rotational engagement therewith; said nut being secured to the lower portion of said frame to prevent the nut from longitudinal displacement when the nut is rotated; and said nut being kinematically coupled with a drive means.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |