US3135503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recuperators
Assignee: Westofen GmbH
•
Filing: 1962-02-08
•
Granted: 1964-06-02
•
Expires: 1982-02-08
Abstract
No abstract record available.
Inventors
- 👤 Sommerer Wilhelm
- 👤 Venus Hellmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:37
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A CERAMIC RECUPERATOR COMPRISING TUBE COLUMNS SPACED AT A DISTANCE FROM ONE ANOTHER FOR ONE FLOW MEDIUM, EACH OF SAID COLUMNS COMPRISING INDIVIDUAL SUPERIMPOSED TUBULAR BRICKS, PASSAGEWAYS LOCATED BETWEEN THE EXTERNAL SURFACES OF SAID TUBULAR BRICKS FOR CONVEYING THE OTHER FLOW MEDIUM, PROTRUDING FLANGES ARRANGED AT THE ENDS OF SAID BRICKS FORMING HEXAGONS WHICH IMPINGE SIMILAR FLANGES UPON THE BRICKS IN ADJACENT COLUMNS TO FORM SAID PASSAGEWAYS, THE END FACES LOCATED AT THE ENDS OF SAID TUBULAR BRICKS HAVING THEIR ENTIRE WIDTH PLANE TO FORM PLANE SURFACES UPON THE OUTER FACES OF SAID HEXAGON FLANGES AND SAID PLANE SURFACES HAVING A CENTRAL GROOVE
Claim 2
Dependent Claim
103 words
A CERAMIC RECUPERATOR COMPRISING TUBE COLUMNS SPACED AT A DISTANCE FROM ONE ANOTHER FOR ONE FLOW MEDIUM, EACH OF SAID COLUMNS COMPRISING INDIVIDUAL SUPERIMPOSED TUBULAR BRICKS, PASSAGEWAYS LOCATED BETWEEN THE EXTERNAL SURFACES OF SAID TUBULAR BRICKS FOR CONVEYING THE OTHER FLOW MEDIUM, PROTRUDING FLANGES ARRANGED AT THE ENDS OF SAID BRICKS FORMING HEXAGONS WHICH IMPINGE SIMILAR FLANGES UPON THE BRICKS IN ADJACENT COLUMNS TO FORM SAID PASSAGEWAYS, THE END FACES LOCATED AT THE ENDS OF SAID TUBULAR BRICKS HAVING THEIR ENTIRE WIDTH PLANE TO FORM PLANE SURFACES UPON THE OUTER FACES OF SAID HEXAGON FLANGES AND SAID PLANE SURFACES HAVING A CENTRAL GROOVE
References Cited (Backward Citations)
US1341970A
Cited
GB136727A
Cited
US1731310A
Cited
US1721938A
Cited
US1771160A
Cited
US2188289A
Cited
US2821369A
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 |