US3173288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting point tester
Assignee: California Research LLC
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Filing: 1962-10-10
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Granted: 1965-03-16
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Expires: 1982-10-10
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Davis
- 👤 Rudolf F Klaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:55
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N25/04; G01K; G01K1/00; G01K1/02; G01K1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
APPARATUS FOR DETERMINING THE MELTING POINT OF A NORMALLY LIQUID MATERIAL COMPRISING A CONTAINER FOR THE LIQUID TO BE TESTED, A MOVABLE PROBE HAVING A TIP ADAPTED TO BE IMMERSED IN SAID LIQUID, MEANS FOR REDUCING THE TEMPERATURE OF SAID PROBE BELOW THE FREEZING POINT OF SAID LIQUID TO PRODUCE A CAP OF FROZEN MATERIAL ON THE TIP OF SAID PROBE, MEANS FOR WITHDRAWING SAID PROBE FROM SAID LIQUID AND RAISING ITS TEMPERATURE TO MELT AT LEAST A PORTION OF SAID CAP AND TO CAUSE AT LAST A PORTION OF THE MATERIAL OF SAID CAP TO FALL FROM THE TIP OF SAID PROBE, AND MEANS ACTUATED BY THE FALLING MATERIAL FOR RECORDING THE TEMPERATURE OF SAID TIP AT THE TIME AT LEAST A PORTION OF SAID CAP MATERIAL FALLS FROM SAID TIP.
Claim 2
Dependent Claim
132 words
APPARATUS FOR DETERMINING THE MELTING POINT OF A NORMALLY LIQUID MATERIAL COMPRISING A CONTAINER FOR THE LIQUID TO BE TESTED, A MOVABLE PROBE HAVING A TIP ADAPTED TO BE IMMERSED IN SAID LIQUID, MEANS FOR REDUCING THE TEMPERATURE OF SAID PROBE BELOW THE FREEZING POINT OF SAID LIQUID TO PRODUCE A CAP OF FROZEN MATERIAL ON THE TIP OF SAID PROBE, MEANS FOR WITHDRAWING SAID PROBE FROM SAID LIQUID AND RAISING ITS TEMPERATURE TO MELT AT LEAST A PORTION OF SAID CAP AND TO CAUSE AT LAST A PORTION OF THE MATERIAL OF SAID CAP TO FALL FROM THE TIP OF SAID PROBE, AND MEANS ACTUATED BY THE FALLING MATERIAL FOR RECORDING THE TEMPERATURE OF SAID TIP AT THE TIME AT LEAST A PORTION OF SAID CAP MATERIAL FALLS FROM SAID TIP.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |