US3129585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pycnometer
Assignee: DON A HART
•
Filing: 1962-01-15
•
Granted: 1964-04-21
•
Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Edward R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/02; G01N2009/022; G01N2009/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A PYCONOMETER FOR MEASURING UNDER PRESSURE TH VOLUME OF A SUBSTANCE, A FIRST PRESSURE VESSEL HAVING A FREELY SLIDABLE PILSTON DISPOSED THEREIN DEFINING A MEASURING CHAMBER ON ONE SIDE THEREOF ADAPTED TO RECEIVE A SAMPLE OF SAID SUBSTANCE IMMERSED IN A LIQUID, AND DEFINING A PRESSURE APPLYING CHAMBER ON THE OTHER SIDE THEREOF ADAPTED TO RECEIVE A PRESSURIZING MEDIUM, A DETACHABLE COVER MEMBER ON SAID FIRST PRESSURE VESSEL PERMITTING SAID PISTON TO BE WITHDRAWN FROM THE FIRST PRESSURE VESSEL, MEANS ON SAID FIRST PRESSURE VESSEL FOR OPERABLY CONNECTING PRESSURE APPLYING MEANS TO SAID PRESSURE APPLYING CHAMBER, SAID PRESSURE APPLYING MEANS COMPRISING A SECOND PRESSURE VESSEL HAVING A CYLINDRICAL AIR CHAMBER AND AN INNER CYLINDRICAL LIQUID CHAMBER, SAID LIQUID CHAMBER BEING SUBSTANTIALLY SMALLER IN CROSS SECTION THAN SAID AIR CHAMBER, FIRST AND SECOND PISTONS IN SAID AIR CHAMBER AND SAID SECOND PISTON SLIDABLE IN SAID LIQUID
Claim 2
Dependent Claim
146 words
IN A PYCONOMETER FOR MEASURING UNDER PRESSURE TH VOLUME OF A SUBSTANCE, A FIRST PRESSURE VESSEL HAVING A FREELY SLIDABLE PILSTON DISPOSED THEREIN DEFINING A MEASURING CHAMBER ON ONE SIDE THEREOF ADAPTED TO RECEIVE A SAMPLE OF SAID SUBSTANCE IMMERSED IN A LIQUID, AND DEFINING A PRESSURE APPLYING CHAMBER ON THE OTHER SIDE THEREOF ADAPTED TO RECEIVE A PRESSURIZING MEDIUM, A DETACHABLE COVER MEMBER ON SAID FIRST PRESSURE VESSEL PERMITTING SAID PISTON TO BE WITHDRAWN FROM THE FIRST PRESSURE VESSEL, MEANS ON SAID FIRST PRESSURE VESSEL FOR OPERABLY CONNECTING PRESSURE APPLYING MEANS TO SAID PRESSURE APPLYING CHAMBER, SAID PRESSURE APPLYING MEANS COMPRISING A SECOND PRESSURE VESSEL HAVING A CYLINDRICAL AIR CHAMBER AND AN INNER CYLINDRICAL LIQUID CHAMBER, SAID LIQUID CHAMBER BEING SUBSTANTIALLY SMALLER IN CROSS SECTION THAN SAID AIR CHAMBER, FIRST AND SECOND PISTONS IN SAID AIR CHAMBER AND SAID SECOND PISTON SLIDABLE IN SAID LIQUID
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |