Patent US3135322A successfully refreshed from Google Patents.
US3135322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled condenser
Assignee: General Electric Co
•
Filing: 1961-04-06
•
Granted: 1964-06-02
•
Expires: 1981-04-06
Abstract
No abstract record available.
Inventors
- 👤 Franz J Neugebauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:38
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553; F; F28; F28B; F28B1/00; F28B1/02; F28F; F28F1/00; F28F1/02; F28F1/04; F28F13/00; F28F13/06; F28F13/12; F28G; F28G1/00; F28G1/12; Y; Y10; Y10S; Y10S138/00; Y10S138/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A LIQUID COOLED CONDENSER, THE COMBINATION OF A PLURALITY OF HEAT EXCHANGE TUBES, MEANS FOR PASSING FLUID THROUGH SAID TUBES, SAID TUBES HAVING INNER WALLS DEFINING A PASSAGE WITH A GENERAL POLYGONAL CROSS SECTION, THE WALLS OF SAID POLYGON CROSS SECTION PASSAGE EXTENDING SUBSTANTIALLY HELICALLY WITH EACH WALL REVOLVING ABOUT THE CENTRAL AXIS OF THE TUBE AT THE SAME FIXED DISTANCE FROM THE AXIS IN A CIRCLE OF REVOLUTION IMPARTING CENTRIFUGAL FORCE IN THE FLUID.
Claim 2
Dependent Claim
76 words
IN A LIQUID COOLED CONDENSER, THE COMBINATION OF A PLURALITY OF HEAT EXCHANGE TUBES, MEANS FOR PASSING FLUID THROUGH SAID TUBES, SAID TUBES HAVING INNER WALLS DEFINING A PASSAGE WITH A GENERAL POLYGONAL CROSS SECTION, THE WALLS OF SAID POLYGON CROSS SECTION PASSAGE EXTENDING SUBSTANTIALLY HELICALLY WITH EACH WALL REVOLVING ABOUT THE CENTRAL AXIS OF THE TUBE AT THE SAME FIXED DISTANCE FROM THE AXIS IN A CIRCLE OF REVOLUTION IMPARTING CENTRIFUGAL FORCE IN THE FLUID.
References Cited (Backward Citations)
US525061A
Cited
US770599A
Cited
US830423A
Cited
US910192A
Cited
AT28099B
Cited
GB190719846A
Cited
US1104714A
Cited
US1268074A
Cited
US1894279A
Cited
US1992504A
Cited
US2893697A
Cited
US2801824A
Cited
FR1147217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |