US2710795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fertilizer material
Assignee: Stauffer Chemical Co
•
Filing: 1953-10-19
•
Granted: 1955-06-14
•
Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:41
CPC Classifications
C; C05; C05B; C05B19/00; B; B01; B01J; B01J2/00; B01J2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR FORMING A PLASTIC MASS INTO SPHEROIDS COMPRISING CONTINUOUSLY MIXING SAID PLASTIC MASS IN A DRUM, CONTINUOUSLY ELEVATING A PORTION OF SAID MASS TO NEAR TO TOP OF THE DRUM AT A SPEED OF SEVERAL HUNDRED FEET PER MINUTE, ALLOWING AT LEAST A PORTION OF SAID ELEVATED MASS TO DROP BY GRAVITY, INTERCEPTING SAID FALLING PORTION WITH A ROTOR HAVING A PLURALITY OF RADIALLY EXTENDING, HORIZONTALLY SPACED, FLAT BLADE UNITS, EACH UNIT HAVING FLAT SURFACES FACING AN ADJACENT UNIT AND DEFINING NARROW SLOTS BETWEEN ADJACENT BLADE UNITS AND ROTATING ON A HORIZONTAL AXIS AT A SPEED OF SECERAL THOUSAND FEET PER MINUTE TO FORM SAID FALLING MASS PORTION INTO SPHEROIDS, DISCHARGING SAID SPHEROIDS INTO THE MASS UNDERGOING MIXING, AND CONTINUING SAID STEPS UNTIL THE MASS IS OF A DESIRED SPHEROID-SIZE.
Claim 2
Dependent Claim
132 words
A PROCESS FOR FORMING A PLASTIC MASS INTO SPHEROIDS COMPRISING CONTINUOUSLY MIXING SAID PLASTIC MASS IN A DRUM, CONTINUOUSLY ELEVATING A PORTION OF SAID MASS TO NEAR TO TOP OF THE DRUM AT A SPEED OF SEVERAL HUNDRED FEET PER MINUTE, ALLOWING AT LEAST A PORTION OF SAID ELEVATED MASS TO DROP BY GRAVITY, INTERCEPTING SAID FALLING PORTION WITH A ROTOR HAVING A PLURALITY OF RADIALLY EXTENDING, HORIZONTALLY SPACED, FLAT BLADE UNITS, EACH UNIT HAVING FLAT SURFACES FACING AN ADJACENT UNIT AND DEFINING NARROW SLOTS BETWEEN ADJACENT BLADE UNITS AND ROTATING ON A HORIZONTAL AXIS AT A SPEED OF SECERAL THOUSAND FEET PER MINUTE TO FORM SAID FALLING MASS PORTION INTO SPHEROIDS, DISCHARGING SAID SPHEROIDS INTO THE MASS UNDERGOING MIXING, AND CONTINUING SAID STEPS UNTIL THE MASS IS OF A DESIRED SPHEROID-SIZE.
References Cited (Backward Citations)
US1921114A
Cited
US1989756A
Cited
US2106223A
Cited
US2287759A
Cited
US2448126A
Cited
US2642343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |