US3133707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Size adjustment mechanism for gyratory crusher
Assignee: Fuller Co
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Filing: 1961-03-23
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Granted: 1964-05-19
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 Curtis A Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A GYRATORY CRUSHER INCLUDING AN UPRIGHT SHAFT, A ROTARY MEMBER IN WHICH ONE END OF SAID SHAFT IS ECCENTRICALLY JOURNALED, A CRUSHER HEAD FIXED ON SAID SHAFT, A SHAFT CONCAVE SURROUNDING SAID HEAD AND SPACED VERTICALLY THEREFROM, SAID SHAFT BEING LONGITUDINALLY MOVABLE TO VARY THE SPACE BETWEEN SAID HEAD AND SAID CONCAVE TO ADJUST THE SIZE OF THE CRUSHED MATERIAL, MEANS FOR ROTATING SAID ROTARY MEMBER TO GYRATE SAID SHAFT, CYLINDER AND PISTON MEANS SUPPORTING SAID SHAFT, THE COMBINATION OF CONTROL MEANS FOR REGULATING THE LONGITUDINAL POSITION OF SAID SHAFT COMPRISING: A WHEATSTONE BRIDGE CIRCUIT RESPONSIVE TO MOVEMENT OF SAID CYLINDER AND PISTON MEANS TO PROVIDE AN ELECTRICAL OUTPUT SIGNAL; AND MEANS FOR INTRODUCING PRESSURIZED FLUID TO SAID CYLINDER AND PISTON
Claim 2
Dependent Claim
122 words
IN A GYRATORY CRUSHER INCLUDING AN UPRIGHT SHAFT, A ROTARY MEMBER IN WHICH ONE END OF SAID SHAFT IS ECCENTRICALLY JOURNALED, A CRUSHER HEAD FIXED ON SAID SHAFT, A SHAFT CONCAVE SURROUNDING SAID HEAD AND SPACED VERTICALLY THEREFROM, SAID SHAFT BEING LONGITUDINALLY MOVABLE TO VARY THE SPACE BETWEEN SAID HEAD AND SAID CONCAVE TO ADJUST THE SIZE OF THE CRUSHED MATERIAL, MEANS FOR ROTATING SAID ROTARY MEMBER TO GYRATE SAID SHAFT, CYLINDER AND PISTON MEANS SUPPORTING SAID SHAFT, THE COMBINATION OF CONTROL MEANS FOR REGULATING THE LONGITUDINAL POSITION OF SAID SHAFT COMPRISING: A WHEATSTONE BRIDGE CIRCUIT RESPONSIVE TO MOVEMENT OF SAID CYLINDER AND PISTON MEANS TO PROVIDE AN ELECTRICAL OUTPUT SIGNAL; AND MEANS FOR INTRODUCING PRESSURIZED FLUID TO SAID CYLINDER AND PISTON
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |