US3265779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for pelletizing pitch
Assignee: United States Steel Corp
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Filing: 1963-12-06
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Granted: 1966-08-09
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Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gobla Stephen
- 👤 William T Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:32
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/14; C10C3/16; B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; B01J2/26; B29; B29B; B29B9/00; B29B9/10; Y; Y10; Y10S; Y10S425/00; Y10S425/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
IN A METHOD OF PELLETIZING FUSIBLE MATERIAL WHICH COMPRISES DEPOSITING MOLTEN DROPS THEREOF SUCCESSIVELY ON A MOVING SUPPORT, THE IMPROVEMENT COMPRISING APPLYING A FILM OF LIQUID TO THE SURFACE OF SAID SUPPORT AND DEPOSITING SAID DROPS ON SAID FILM, CONTROLLING THE THICKNESS OF SAID FILM SO THAT IT WILL BE SUBSTANTIALLY COMPLETELY EVAPORATED IN THE AREA OF CONTACT OF SAID FILM AND DROPS, THEREBY SOLIDIFYING THE SURFAFE OF SAID DROPS ADJACENT SAID SUPPORT AND INHIBITING ADHERENCE OF THE DROPS THERETO.
Claim 2
Dependent Claim
80 words
IN A METHOD OF PELLETIZING FUSIBLE MATERIAL WHICH COMPRISES DEPOSITING MOLTEN DROPS THEREOF SUCCESSIVELY ON A MOVING SUPPORT, THE IMPROVEMENT COMPRISING APPLYING A FILM OF LIQUID TO THE SURFACE OF SAID SUPPORT AND DEPOSITING SAID DROPS ON SAID FILM, CONTROLLING THE THICKNESS OF SAID FILM SO THAT IT WILL BE SUBSTANTIALLY COMPLETELY EVAPORATED IN THE AREA OF CONTACT OF SAID FILM AND DROPS, THEREBY SOLIDIFYING THE SURFAFE OF SAID DROPS ADJACENT SAID SUPPORT AND INHIBITING ADHERENCE OF THE DROPS THERETO.
Claim 3
Dependent Claim
103 words
IN AN APPARATUS FOR PELLETIZING FUSIBLE MATERIAL INCLUDING A CONVEYOR HAVING A SUBSTANTIALLY FLAT SURFACE AND MEANS TO SUPPLY DROPS OF MOLTEN MATERIAL SUCCESSIVELY AND SUBSTANTIALLY UNIFORMLY THERETO, THE IMPROVEMENT COMPRISING FILM APPLYING MEANS INCLUDING CONVEYOR-CONTACTING ROLLER MEANS ENGAGING AND FRICTIONALLY DRIVEN BY SAID CONVEYOR, MEANS TO CONTROL THE PRESSURE OF SAID ROLLER AGAINST SAID CONVEYOR, AND MEANS FOR SUPPLYING LIQUID TO SAID ROLLER, THEREBY APPLYING TO SAID CONVEYOR AHEAD OF THE POINT AT WHICH THE MOLTEN DROPS ARE DEPOSITED ON FILM, A SUBSTANTIALLY CONTINUOUS FILM OF LIQUID OF PREDETERMINED THICKNESS, THEREBY FLATTENING AND SOLIDIFYING THE SURFACE OF SAID DROPS ADJACENT SAID CONVEYOR.
Claim 4
Dependent Claim
103 words
IN AN APPARATUS FOR PELLETIZING FUSIBLE MATERIAL INCLUDING A CONVEYOR HAVING A SUBSTANTIALLY FLAT SURFACE AND MEANS TO SUPPLY DROPS OF MOLTEN MATERIAL SUCCESSIVELY AND SUBSTANTIALLY UNIFORMLY THERETO, THE IMPROVEMENT COMPRISING FILM APPLYING MEANS INCLUDING CONVEYOR-CONTACTING ROLLER MEANS ENGAGING AND FRICTIONALLY DRIVEN BY SAID CONVEYOR, MEANS TO CONTROL THE PRESSURE OF SAID ROLLER AGAINST SAID CONVEYOR, AND MEANS FOR SUPPLYING LIQUID TO SAID ROLLER, THEREBY APPLYING TO SAID CONVEYOR AHEAD OF THE POINT AT WHICH THE MOLTEN DROPS ARE DEPOSITED ON FILM, A SUBSTANTIALLY CONTINUOUS FILM OF LIQUID OF PREDETERMINED THICKNESS, THEREBY FLATTENING AND SOLIDIFYING THE SURFACE OF SAID DROPS ADJACENT SAID CONVEYOR.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |