US3083081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer granulating drum unit
Assignee: Spencer Chemical Co
•
Filing: 1961-03-10
•
Granted: 1963-03-26
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Joe C Sharp
- 👤 Wilbur A Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:03
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A FERTILIZER GRANULATING DRUM UNIT COMPRISING IN COMBINATION AN OPEN-END ROTATABLE GRANULATING DRUM, TWO RETAINING RINGS SINGLY DISPOOSED AT THE ANNULAR ENDS OF SAID GRANULATING DRUM UNIT TO PREVENT PREMATURE OUTFLOW OF THE GRANULATING MIXTURE, A ROTOR OF SUBSTANTIALLY THE LENGTH OF SAID GRANULATING DRUM, SAID ROTOR HAVING RADIALLY PROJECTING, LONGITUDINAL RIBS AT REGULARLY SPACED INTERVALS, AND SUPPORTING MEANS FOR ROTATABLY CARRYING SAID ROTOR WITHIN SAID GRANULATING DRUM IN A PREDETERMINED POSITION WHEREBY THE AXIS OF SAID ROTOR IS MAINTAINED SUBSTABTIALLY PARALLEL TO THE AXIS OF THE SAID GRANULATING DRUM AND WHEREBY SAID ROTOR IS MAINTAINABLLLE IN REVOLVING CONTACT WITH THE INTERIOR SURFACE OF SAID GRANULATING DRUMUNIT TO PROVIDE A DRUM CLEANING ACTION.
Claim 2
Dependent Claim
113 words
A FERTILIZER GRANULATING DRUM UNIT COMPRISING IN COMBINATION AN OPEN-END ROTATABLE GRANULATING DRUM, TWO RETAINING RINGS SINGLY DISPOOSED AT THE ANNULAR ENDS OF SAID GRANULATING DRUM UNIT TO PREVENT PREMATURE OUTFLOW OF THE GRANULATING MIXTURE, A ROTOR OF SUBSTANTIALLY THE LENGTH OF SAID GRANULATING DRUM, SAID ROTOR HAVING RADIALLY PROJECTING, LONGITUDINAL RIBS AT REGULARLY SPACED INTERVALS, AND SUPPORTING MEANS FOR ROTATABLY CARRYING SAID ROTOR WITHIN SAID GRANULATING DRUM IN A PREDETERMINED POSITION WHEREBY THE AXIS OF SAID ROTOR IS MAINTAINED SUBSTABTIALLY PARALLEL TO THE AXIS OF THE SAID GRANULATING DRUM AND WHEREBY SAID ROTOR IS MAINTAINABLLLE IN REVOLVING CONTACT WITH THE INTERIOR SURFACE OF SAID GRANULATING DRUMUNIT TO PROVIDE A DRUM CLEANING ACTION.
References Cited (Backward Citations)
DE572006C
Cited
US1176040A
Cited
US1042710A
Cited
US2043143A
Cited
US2720037A
Cited
US2871510A
Cited
US2976125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |