US3241610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fin and tube stock assemblies for heat exchange units
Assignee: Peerless of America Inc
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Filing: 1961-10-16
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Granted: 1966-03-22
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Richard W Kritzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/126; F28F1/24; F28F1/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A HEAT EXCHANGE UNIT OF THE FINNED TUBING TYPE, IN COMBINATION, AN ELONGATED LENGTH OF TUBE STOCK, AND A SERIES OF CLOSELY SPACED, GENERALLY PARALLEL, HEAT-RADIATING FINS SECURED TO, AND EXTENDING TRANSVERSELY OF, SAID LENGTH, SAID FINS BEING DISPOSED IN ADJACENT PAIRS, EACH PAIR OF FINS INCLUDING A SECTION OF FLAT SHEET METAL FIN STOCK CREASED LINEARLY TO PROVIDE A LINEARLY STRAIGHT FOLDED EDGE AND ESTABLISHING A DUAL-THICKNESS PORTION, SAID DUAL-THICKNESS PORTION BEING FORMED WITH AN OPENING THERETHROUGH OF CIRCULAR CONFIGURATION, SAID DUAL THICKNESS PORTION BEING COMPRISED OF LAMINAE WITHICH ARE IN FACE TO FACE CONTACT THROUGHOUT AT LEAST THE REGION OF SAID OPENING, SAID LENGTH OF TUBE STOCK PASSING THROUGH ALL OF THE OPENINGS OF THE VARIOUS DUEL-THICKNESS PORTIONS AND BEARING RADIALLY OUTWARDLY IN COEXTNESIVE FRICTIONAL CONTACT AND EXPANDED RELATIONSHIP WITH THE EDGE OF SAID OPENINGS.
Claim 2
Dependent Claim
138 words
IN A HEAT EXCHANGE UNIT OF THE FINNED TUBING TYPE, IN COMBINATION, AN ELONGATED LENGTH OF TUBE STOCK, AND A SERIES OF CLOSELY SPACED, GENERALLY PARALLEL, HEAT-RADIATING FINS SECURED TO, AND EXTENDING TRANSVERSELY OF, SAID LENGTH, SAID FINS BEING DISPOSED IN ADJACENT PAIRS, EACH PAIR OF FINS INCLUDING A SECTION OF FLAT SHEET METAL FIN STOCK CREASED LINEARLY TO PROVIDE A LINEARLY STRAIGHT FOLDED EDGE AND ESTABLISHING A DUAL-THICKNESS PORTION, SAID DUAL-THICKNESS PORTION BEING FORMED WITH AN OPENING THERETHROUGH OF CIRCULAR CONFIGURATION, SAID DUAL THICKNESS PORTION BEING COMPRISED OF LAMINAE WITHICH ARE IN FACE TO FACE CONTACT THROUGHOUT AT LEAST THE REGION OF SAID OPENING, SAID LENGTH OF TUBE STOCK PASSING THROUGH ALL OF THE OPENINGS OF THE VARIOUS DUEL-THICKNESS PORTIONS AND BEARING RADIALLY OUTWARDLY IN COEXTNESIVE FRICTIONAL CONTACT AND EXPANDED RELATIONSHIP WITH THE EDGE OF SAID OPENINGS.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |