US3202746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing small clay cylinders
Assignee: Structural Clay Products Institute
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Filing: 1961-12-08
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Granted: 1965-08-24
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Robert B Day
- 👤 Paul V Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:13
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/004; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
THE METHOD OF MAKING SMALL CLAY CYLINDERS INCLUDING THE STEPS OF EXTRUDING CLAY IN A PLASTIC STATE INTO A PLURALITY OF THREAD-LIKE STREAMS, DRYING THE STREAMS, BREAKING THE STREAMS AFTER DRYING INTO A NUMBER OF VARYING LENGTHS, AND THEN SUBJECTING THE BROKEN LENGTHS TO YIELDABLE ROLLER COMPRESION SUFFICIENT TO BREAK A SUBSTANTIAL PORTION OF SAID LENGTHS INTO SMAL CYLINDERS OF A SUBSTANTIALLY UNIFORM SIZE AND SHAPE BUT WITHOUT CRUSHING THE LENGTHS.
Claim 2
Independent Claim
71 words
THE METHOD OF MAKING SMALL CLAY CYLINDERS INCLUDING THE STEPS OF EXTRUDING CLAY IN A PLASTIC STATE INTO A PLURALITY OF THREAD-LIKE STREAMS, DRYING THE STREAMS, BREAKING THE STREAMS AFTER DRYING INTO A NUMBER OF VARYING LENGTHS, AND THEN SUBJECTING THE BROKEN LENGTHS TO YIELDABLE ROLLER COMPRESION SUFFICIENT TO BREAK A SUBSTANTIAL PORTION OF SAID LENGTHS INTO SMAL CYLINDERS OF A SUBSTANTIALLY UNIFORM SIZE AND SHAPE BUT WITHOUT CRUSHING THE LENGTHS.
Claim 3
Dependent Claim
95 words
APPARATUS FOR MAKING SMALL CLAY CYLINDERS OF GENERALLY UNIFORM SIZE INCLUDING EXTRUSION MEANS FOR FORMING MOIST THREAD-LIKE STREAMS FROM A PLASTIC CLAY MASS, CONVEYING MEANS FOR DELIVERING SAID STREAMS TO A DRYING TUNNEL FORMED AND ADAPTED TO SUBJECT SAID STREAMS TO AN ELEVATED TEMPERATURE AND THEREBY DRY THE STREAMS, CONVEYING MEANS HAVING A CONVEYING SURFACE FOR REMOVING THE STREAMS AWAY FROM THE TUNNEL, AND A ROLLER ASSOCIATED WITH SAID SURFACE LOCATED OUTSIDE OF SAID TUNNEL FOR EXERTING COMPRESSIVE STRESSES ON SAID STREAMS WITHOUT CRUSHING SAID STREAMS AND THEREBY CAUSE BREAKING SAID STREAMS INTO SHORT LENGTHS.
Claim 4
Dependent Claim
95 words
APPARATUS FOR MAKING SMALL CLAY CYLINDERS OF GENERALLY UNIFORM SIZE INCLUDING EXTRUSION MEANS FOR FORMING MOIST THREAD-LIKE STREAMS FROM A PLASTIC CLAY MASS, CONVEYING MEANS FOR DELIVERING SAID STREAMS TO A DRYING TUNNEL FORMED AND ADAPTED TO SUBJECT SAID STREAMS TO AN ELEVATED TEMPERATURE AND THEREBY DRY THE STREAMS, CONVEYING MEANS HAVING A CONVEYING SURFACE FOR REMOVING THE STREAMS AWAY FROM THE TUNNEL, AND A ROLLER ASSOCIATED WITH SAID SURFACE LOCATED OUTSIDE OF SAID TUNNEL FOR EXERTING COMPRESSIVE STRESSES ON SAID STREAMS WITHOUT CRUSHING SAID STREAMS AND THEREBY CAUSE BREAKING SAID STREAMS INTO SHORT LENGTHS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |