US3267692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staggered finned evaporator structure
Assignee: Westinghouse Electric Corp
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Filing: 1965-05-28
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Granted: 1966-08-23
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Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Aelred J Pfeiffer
- 👤 Philip F Harbour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:02
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
A FIN ARRANGEMENT FOR A FIN AND TUBE TYPE REFRIGERANT EVAPORATOR ADAPTED TO NORMALLY OPERATE AT A BELOWFREEZING TEMPERATURE, INCLUDING: A SERIES OF SPACED-APART, GENERALLY PARALLEL FINS BETWEEN WHICH AIR TO BE CHILLED IS DIRECTED, THE UPSTREAM EDGES OF ADJACENT FINS BEING STAGGERED TO PROJECT UPSTREAM AND TO BE RECESSED DOWNSTREAM WITH RESPECT TO EACH OTHER TO PROVIDE MULTIPLE SPACING, AS MEASURED IN A DIRECTION TRANSVERSE TO THE DIRECTION OF AIR FLOW, BETWEEN FACING FINS IN THE UPSTREAM PORTION OF SAID EVAPORATOR AS COMPARED TO THE SPACING BETWEEN FACING FINS IN THE MAIN BODY PORTION OF SAID EVAPORATOR; SAID UPSTREAM PROJECTING FINS INCLUDING CUT-OUT PORTIONS IN THAT AREA OF THEIR SURFACES FACING, IN A TRANSVERSE DIRECTION, THE LEADING EDGES OF THE RECESSED FINS TO DELAY BRIDGING OF FROST BETWEEN SAID LEADING EDGES OF SAID RECESSED FINS AND SAID FINS HAVING SAID FACING CUT-OUT PORTIONS.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |