US3379217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capillary passage and method of making
Assignee: Beckman Coulter Inc
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Filing: 1963-09-24
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Granted: 1968-04-23
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Lynn B Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/10; C; C03; C03B; C03B23/00; C03B23/26; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
IN COMBINATION: AN ELONGATED GLASS CAPILLARY TUBE; A BODY OF GLASS HAVING A PASSAGE THERETHROUGH NO LONGER THAN SAID CAPILLARY TUBE AND HAVING A LOWER SOFTENING TEMPERATURE THAN SAID CAPILLARY TUBE; AND SAID CAPILLARY TUBE BEING POSITIONED LENGTHWISE IN SAID PASSAGE WITH EACH END OF SAID CAPILLARY TUBE EXTENDING TO AT LEAST EACH RESPECTIVE END OF SAID PASSAGE AND SAID CAPILLARY TUBE HAVING ITS OUTER WALLS SEALED TO THE WALLS OF SAID PASSAGE.
Claim 2
Dependent Claim
73 words
IN COMBINATION: AN ELONGATED GLASS CAPILLARY TUBE; A BODY OF GLASS HAVING A PASSAGE THERETHROUGH NO LONGER THAN SAID CAPILLARY TUBE AND HAVING A LOWER SOFTENING TEMPERATURE THAN SAID CAPILLARY TUBE; AND SAID CAPILLARY TUBE BEING POSITIONED LENGTHWISE IN SAID PASSAGE WITH EACH END OF SAID CAPILLARY TUBE EXTENDING TO AT LEAST EACH RESPECTIVE END OF SAID PASSAGE AND SAID CAPILLARY TUBE HAVING ITS OUTER WALLS SEALED TO THE WALLS OF SAID PASSAGE.
Claim 3
Independent Claim
111 words
THE METHOD OF FORMING A CAPILLARY PASSAGE IN A BODY OF GLASS COMPRISING THE STEPS OF: PROVIDING AN ELONGATED GLASS CAPILLARY TUBE; PROVIDING A BODY OF GLASS HAVING A PASSAGE THERETHROUGH NO LONGER THAN SAID CAPILLARY TUBE AND OF LARGER CROSS-SECTIONAL AREA THAN SAID CAPILLARY TUBE, SAID BODY HAVING A LOWER SOFTENING TEMPERATURE THAN SAID CAPILLARY TUBE; INSERTING SAID CAPILLARY TUBE LENGTHWISE IN SAID PASSAGE WITH EACH END OF SAID CAPILLARY TUBE EXTENDING TO AT LEAST EACH RESPECTIVE END OF SAID PASSAGE; AND HEATING SAID BODY OF GLASS ADJACENT SAID TUBE TO THE SOFTENING TEMPERATURE OF SAID BODY WHEREBY SAID BODY WILL COLLAPSE AND SEAL ONTO SAID CAPILLARY TUBE UPON COOLING.
Claim 4
Independent Claim
111 words
THE METHOD OF FORMING A CAPILLARY PASSAGE IN A BODY OF GLASS COMPRISING THE STEPS OF: PROVIDING AN ELONGATED GLASS CAPILLARY TUBE; PROVIDING A BODY OF GLASS HAVING A PASSAGE THERETHROUGH NO LONGER THAN SAID CAPILLARY TUBE AND OF LARGER CROSS-SECTIONAL AREA THAN SAID CAPILLARY TUBE, SAID BODY HAVING A LOWER SOFTENING TEMPERATURE THAN SAID CAPILLARY TUBE; INSERTING SAID CAPILLARY TUBE LENGTHWISE IN SAID PASSAGE WITH EACH END OF SAID CAPILLARY TUBE EXTENDING TO AT LEAST EACH RESPECTIVE END OF SAID PASSAGE; AND HEATING SAID BODY OF GLASS ADJACENT SAID TUBE TO THE SOFTENING TEMPERATURE OF SAID BODY WHEREBY SAID BODY WILL COLLAPSE AND SEAL ONTO SAID CAPILLARY TUBE UPON COOLING.
References Cited (Backward Citations)
US2925370A
Cited
US3122431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |