Patent US2828688A successfully refreshed from Google Patents.
Patent US3245248A successfully refreshed from Google Patents.
US3245248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic temperature control apparatus
Assignee: Honeywell Inc
•
Filing: 1962-11-08
•
Granted: 1966-04-12
•
Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 John R Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CRYOGENIC TEMPERATURE CONTROL APPARATUS FOR PROVIDING A CONSTANT TEMPERATURE CRYOGENIC LIQUID BATH COMPRISING A CLOSED VESSEL FOR STORING A CRYOGENIC LIQUID, A VALVE OPERATIVE TO VENT SAID TANK, HEATER MEANS OPERATIVE TO HEAT THE CRYOGENIC LIQUID STORED IN SAID VESSEL, TEMPERATURE DETECTING MEANS OPERATIVE TO DETECT THE TEMPERATURE OF THE CRYOGENIC LIQUID, AND TEMPERATURE CONTROL MEANS RESPONSIVE TO SAID TEMPERATURE DETECTING MEANS FOR CONTROLLING SAID HEATER MEANS IN ONE RANGE OF OPERATION OF SAID CONTROLLER MEANS AND SAID VALVE IN ANOTHER RANGE OF OPERATION OF SAID CONTROLLER MEANS WHEREBY TO FOLLOW THE VAPOR-PRESSURE CURVE OF SAID CRYOGENIC LIQUID.
Claim 2
Dependent Claim
99 words
A CRYOGENIC TEMPERATURE CONTROL APPARATUS FOR PROVIDING A CONSTANT TEMPERATURE CRYOGENIC LIQUID BATH COMPRISING A CLOSED VESSEL FOR STORING A CRYOGENIC LIQUID, A VALVE OPERATIVE TO VENT SAID TANK, HEATER MEANS OPERATIVE TO HEAT THE CRYOGENIC LIQUID STORED IN SAID VESSEL, TEMPERATURE DETECTING MEANS OPERATIVE TO DETECT THE TEMPERATURE OF THE CRYOGENIC LIQUID, AND TEMPERATURE CONTROL MEANS RESPONSIVE TO SAID TEMPERATURE DETECTING MEANS FOR CONTROLLING SAID HEATER MEANS IN ONE RANGE OF OPERATION OF SAID CONTROLLER MEANS AND SAID VALVE IN ANOTHER RANGE OF OPERATION OF SAID CONTROLLER MEANS WHEREBY TO FOLLOW THE VAPOR-PRESSURE CURVE OF SAID CRYOGENIC LIQUID.
References Cited (Backward Citations)
US1304100A
Cited
FR709445A
Cited
US2015838A
Cited
US2515835A
Cited
US2489049A
Cited
US2856944A
Cited
US2948295A
Cited
US3068387A
Cited
US3092977A
Cited
US3080725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |