Patent US3825233A successfully refreshed from Google Patents.
US3825233A
Expired / Lapsed
US
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Carbon black pelleter
Assignee: Phillips Petroleum Co
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Filing: 1972-02-14
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Granted: 1974-07-23
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Expires: 1992-02-14
Abstract
Abstract A carbon black pelleter in which the center lines of the pins on the shaft are spaced apart, when viewed in relation to the longitudinal axis of the shaft, a distance not greater than one pin diameter.
Inventors
- 👤 E Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:40
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/10; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/60; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
In a carbon black pelleter, the improvement comprising: a. a pelleter shaft; and, b. a plurality of pins mounted on said shaft and projecting radially therefrom, said pins being positioned in a plurality of rows helically positioned along the length of said shaft, said pins being arranged in four helixes and spaced apart a distance such that adjacent pins intersect a common plane substantially perpendicular to the longitudinal axis of said shaft.
Claim 2
Dependent Claim
72 words
In a carbon black pelleter, the improvement comprising: a. a pelleter shaft; and, b. a plurality of pins mounted on said shaft and projecting radially therefrom, said pins being positioned in a plurality of rows helically positioned along the length of said shaft, said pins being arranged in four helixes and spaced apart a distance such that adjacent pins intersect a common plane substantially perpendicular to the longitudinal axis of said shaft.
Claim 3
Dependent Claim
22 words
The pelleter of claim 1 in which the downstream edge and the upstream edge of adjacent pins lie on said common plane.
Claim 4
Dependent Claim
19 words
The pelleter of claim 1 in which said helixes are positioned around said shaft at about a 30* pitch.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |