Patent US3173482A successfully refreshed from Google Patents.
US3173482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quadrant baffle for heat exchange header
Assignee: American Air Filter Co Inc
•
Filing: 1962-11-21
•
Granted: 1965-03-16
•
Expires: 1982-11-21
Abstract
No abstract record available.
Inventors
- 👤 Richard E Allender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:31
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28F9/02; F28F9/0202; F28F9/0204; F28F9/0214; F28F9/0217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A HEADER CONSTRUCTED FOR A SAME END SUPPLY AND RETURN SERPENTINE COIL HAVING AN EVEN NUMBER OF ROWS OF TUBES, COMPRISING: (A) A HEADER PLATE HAVING APERTURES RECEIVING THE OPEN ENDS OF SAID TUBES; (B) CHANNEL MEANS FORMING SUCCESSIVE CHAMBERS WITH SAID HEADER PLATE OVER THE TUBE ENDS OF EACH TWO SUCCESSIVE ADJACENT ROWS OF TUBES, EXCLUSIVE OF THE FIRST AND LAST ROWS OF SAID TUBS, SO THAT SAID EACH TWO SUCCESSIVE ADJACENT ROWS OF TUBES ARE IN COMMUNICATION BUT ISLOATED FROM OTHER ROWS; AND (C) COVER MEANS, AND INTERIOR OPPOSITE QUADRANT BAFFLE MEANS LYING IN A PLANE SPLITTING THE THICKNESS OF SAID HEADER, SEALED TO SAID HEADER PLATE AND CHANNEL MEANS TO FORM AN OUTER SUPPLY CHAMBER IN COMMUNICATION WITH SAID FIRST ROW, AND A SEPARATE OUTER RETURN CHAMBER IN COMMUNICATION WITH SAID LAST ROW.
Claim 2
Dependent Claim
136 words
A HEADER CONSTRUCTED FOR A SAME END SUPPLY AND RETURN SERPENTINE COIL HAVING AN EVEN NUMBER OF ROWS OF TUBES, COMPRISING: (A) A HEADER PLATE HAVING APERTURES RECEIVING THE OPEN ENDS OF SAID TUBES; (B) CHANNEL MEANS FORMING SUCCESSIVE CHAMBERS WITH SAID HEADER PLATE OVER THE TUBE ENDS OF EACH TWO SUCCESSIVE ADJACENT ROWS OF TUBES, EXCLUSIVE OF THE FIRST AND LAST ROWS OF SAID TUBS, SO THAT SAID EACH TWO SUCCESSIVE ADJACENT ROWS OF TUBES ARE IN COMMUNICATION BUT ISLOATED FROM OTHER ROWS; AND (C) COVER MEANS, AND INTERIOR OPPOSITE QUADRANT BAFFLE MEANS LYING IN A PLANE SPLITTING THE THICKNESS OF SAID HEADER, SEALED TO SAID HEADER PLATE AND CHANNEL MEANS TO FORM AN OUTER SUPPLY CHAMBER IN COMMUNICATION WITH SAID FIRST ROW, AND A SEPARATE OUTER RETURN CHAMBER IN COMMUNICATION WITH SAID LAST ROW.
References Cited (Backward Citations)
US1796509A
Cited
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 |