Patent US3138444A successfully refreshed from Google Patents.
US3138444A
Expired / Lapsed
US
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Method and apparatus for manufacturing glass beads
Assignee: Cataphote Inc
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Filing: 1961-01-27
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Granted: 1964-06-23
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Expires: 1981-01-27
Abstract
No abstract record available.
Inventors
- 👤 Charles E Searight
- 👤 Hugh W Smalley
- 👤 Hyman L Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:16
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/10; C03B19/1005; C03B19/102
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A METHOD FOR PRODUCING SMALL GLASS BEADS WHICH COMPRISES PROVIDING A STREAM OF HOT GASES OF A TEMPERATURE ABOVE THE NORMAL WORKING TEMPERATURE RANGE OF THE GLASS AND HAVING A ZONE OF HIGH VELOCITY, INTRODUCING A STREAM OF MOLTEN GLASS INTO SAID ZONE TO THEREBY CAUSE SAID GLASS STREAM TO FORM INTO A PLURALITY OF FINE MOLTEN GLASS STREAMS, INTRODUCING SAID STREAMS INTO A ZONE OF HIGH TURBULENCE, THEREBY EFFECTIVELY BREAKING SAID STREAMS INTO A PLURALITY OF SMALL GLASS RODS, MAINTAINING THE TEMPERATURE OF SAID RODS SUFFICIENTLY HIGH TO ALLOW THE SURFACE TENSION OF THE GLASS TO FORM SAID GLASS RODS INTO GLASS BEADS, COOLING SAID GLASS BEADS, AND THEREAFTER COLLECTING SAID GLASS BEADS.
References Cited (Backward Citations)
US2626484A
Cited
US2619776A
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US2717416A
Cited
US3015127A
Cited
US2965921A
Cited
US2972169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |