US3096035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary impact crusher
Assignee: Barber Greene Co
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Filing: 1960-08-04
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Granted: 1963-07-02
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Expires: 1980-08-04
Abstract
No abstract record available.
Inventors
- 👤 Frank M Allen
- 👤 Archer Fred Curtis
- 👤 William S Shira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:21
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
A ROTARY IMPACT CRUSHER COMPRISING COOPERATING UPPER AND LOWER ROTORS HAVING PERIPHERAL IMPACT HAMMERS REVOLABLE IN THE SAME DIRECTION ABOUT PARALLEL HORIZONTAL AXES DISPOSED AT DIFFERENT ELEVATIONS, A HOUSING FOR SAID ROTORS FORMING AN UNOBSTRUCTED IMPACT ZONE ABOVE THE HAMMER PATHS AND BEING BOUNDED ABOVE SAID ZONE BY A RECTILINEAR BREAKER PLATE DISPOSED PARALLEL TO THE COMMON PLANE OF THE ROTOR AXES AND BY ANOTHER RECTILINEAR BREAKER PLATE DEPENDING FROM THE LOWER END OF SAID INCLINED PLATE, SEVERAL STATIONARY BREAKER BARS SPANNING SAID HOUSING BENEATH AND LATERALLY OF SAID ZONE AND BETWEEN THE LOWER END OF SAID DEPENDING PLATE AND THE PATH OF THE HAMMERS OF THE LOWER ROTOR, AND AN APPROXIMATELY UPRIGHT MATERIAL DISCHARGE GRID PIVOTALLY SUSPENDED FROM SAID HOUSING LATERALLY OF SAID STATIONARY BARS AND OF SAID LOWER ROTOR AND HAVING THEREON UPPER AND LOWER RIGID SECTIONS SEPARATED BY ANOTHER BREAKER BAR.
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) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |