Patent US4818576A successfully refreshed from Google Patents.
Patent US3295598A successfully refreshed from Google Patents.
US3295598A
Expired / Lapsed
US
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Heat exchanger assembly and method of forming same
Assignee: Stanley Knight Corp
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Filing: 1965-01-14
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Granted: 1967-01-03
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Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 John A Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:43
CPC Classifications
F; F28; F28F; F28F7/00; F28F7/02; F28D; F28D7/00; F28D7/0008; F28F9/00; F28F9/26; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/495; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49352
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HEAT EXCHANGER COMPRISING A PLURALITY OF OFFSET TUBE COILS, A PLURALITY OF BLOCK ELEMENTS, EACH OF SAID BLOCK ELEMENTS BEING POSITIONED ADJACENT AND IN DIRECT HEAT-TRANSFER CONTACT WITH OPPOSED PORTIONS OF EACH OF SAID TUBE COILS, EACH OF SAID TUBE COILS HAVING THE ENTIRE OUTER SURFACE OF ITS MAJOR PORTION IN DIRECT HEAT-TRANSFER CONTACT WITH OPPOSED BLOCK ELEMENT PORTIONS, EACH OF SAID BLOCK ELEMENTS BEING IN HEAT-TRANSFER CONTACT WITH AT LEAST ONE ADJACENT BLOCK ELEMENT AND MEANS RETAINING ALL OF SAID BLOCK ELEMENTS IN SAID DIRECT HEAT-TRANSFER CONTACT RELATIONSHIP, WHEREBY HEAT MAY BE TRANSFERRED FROM ONE TO ANOTHER OF SAID TUBE COILS THROUGH SAID BLOCK ELEMENTS.
Claim 2
Dependent Claim
107 words
A HEAT EXCHANGER COMPRISING A PLURALITY OF OFFSET TUBE COILS, A PLURALITY OF BLOCK ELEMENTS, EACH OF SAID BLOCK ELEMENTS BEING POSITIONED ADJACENT AND IN DIRECT HEAT-TRANSFER CONTACT WITH OPPOSED PORTIONS OF EACH OF SAID TUBE COILS, EACH OF SAID TUBE COILS HAVING THE ENTIRE OUTER SURFACE OF ITS MAJOR PORTION IN DIRECT HEAT-TRANSFER CONTACT WITH OPPOSED BLOCK ELEMENT PORTIONS, EACH OF SAID BLOCK ELEMENTS BEING IN HEAT-TRANSFER CONTACT WITH AT LEAST ONE ADJACENT BLOCK ELEMENT AND MEANS RETAINING ALL OF SAID BLOCK ELEMENTS IN SAID DIRECT HEAT-TRANSFER CONTACT RELATIONSHIP, WHEREBY HEAT MAY BE TRANSFERRED FROM ONE TO ANOTHER OF SAID TUBE COILS THROUGH SAID BLOCK ELEMENTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |