US3142970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil apparatus
Assignee: Carrier Corp
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Filing: 1963-02-11
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Granted: 1964-08-04
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Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 Harry T Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
F; F25; F25B; F25B39/00; F25B47/00; F25B47/02; F25B47/022; F25B47/025; F25B13/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
IN COIL APPARATUS FOR USE IN A REVERSIBLE REFRIGERATION SYSTEM INCLUDING REVERSING MEANS HAVING A REFRIGERANT GAS LINE LEADING THEREFROM AND EXPANSION MEANS HAVING A REFRIGERANT LIQUID LINE LEADING THEREFROM, THE COMBINATION OF (1) FIRST AND SECOND SUBSTANTIALLY VERTICALLY DISPOSED ROWS OF HEAT EXCHANGE TUBING, EACH HAVING A FIRST OPENING IN THE LOWERMOST PORTION THEREOF ADAPTED TO COMMUNICATE WITH THE REFRIGERANT SYSTEM GAS LINE, (2) FIRST CONDUIT MEANS CONNECTING A FIRST PART INCLUDING SAID FIRST OPENING OF EACH OF SAID FIRST AND SECOND ROWS IN SERIES FLOW RELATIONSHIP WITH A SECOND PART OF THE OPPOSITE SECOND AND FIRST ROWS RESPECTIVELY, AND (3) A SECOND OPENING IN THE LOWERMOST PORTION OF EACH OF SAID SECOND PARTS ADAPTED TO COMMUNICATE SAID FIRST AND SECOND ROWS WITH THE REFRIGERANT SYSTEM LIQUID LINE.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |