Patent US3061690A successfully refreshed from Google Patents.
Patent US3267914A successfully refreshed from Google Patents.
US3267914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Economizer support
Assignee: Foster Wheeler Inc
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Filing: 1964-10-27
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Granted: 1966-08-23
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Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 John M Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:23
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/202; F22D; F22D1/00; F22D1/02; F22D1/08; F22D1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN ECONOMIZER COMPRISING WALL MEANS INCLUDING AT LEAST TWO OPPOSED WALLS DEFINING A VERTICALLY EXTENDING HOT GAS PASSAGEWAY; A PLURALITY OF VERTICALLY ORIENTED SIDE-BY-SIDE TUBE BANKS; EACH BANK COMPRISING TUBE SECTIONS INCLUDING PARALLEL STRAIGHT TUBES CONNECTED BY TUBE BENDS TO DEFINE A SINUOUS CIRCULATING FLUID ELEMENT; SUPPORT ASSEMBLIES FOR THE TUBE BANKS EACH COMPRISING SPACED APART VERTICAL ORIENTED CHANNELS; A PLURALITY OF HORIZONTAL SHELF MEMBERS BETWEEN THE CHANNELS AT VERTICALLY SPACED INTERVALS; THE SUPPORT ASSEMBLIES BEING DISPOSED AGAINST SAID OPPOSED WALLS TO DEFINE A PLURALITY OF HORIZONTALLY EXTENDING COMPARTMENTS ADJACENT EACH WALL OPENING INWARDLY TO THE HOT GAS PASSAGEWAY;
Claim 2
Dependent Claim
99 words
AN ECONOMIZER COMPRISING WALL MEANS INCLUDING AT LEAST TWO OPPOSED WALLS DEFINING A VERTICALLY EXTENDING HOT GAS PASSAGEWAY; A PLURALITY OF VERTICALLY ORIENTED SIDE-BY-SIDE TUBE BANKS; EACH BANK COMPRISING TUBE SECTIONS INCLUDING PARALLEL STRAIGHT TUBES CONNECTED BY TUBE BENDS TO DEFINE A SINUOUS CIRCULATING FLUID ELEMENT; SUPPORT ASSEMBLIES FOR THE TUBE BANKS EACH COMPRISING SPACED APART VERTICAL ORIENTED CHANNELS; A PLURALITY OF HORIZONTAL SHELF MEMBERS BETWEEN THE CHANNELS AT VERTICALLY SPACED INTERVALS; THE SUPPORT ASSEMBLIES BEING DISPOSED AGAINST SAID OPPOSED WALLS TO DEFINE A PLURALITY OF HORIZONTALLY EXTENDING COMPARTMENTS ADJACENT EACH WALL OPENING INWARDLY TO THE HOT GAS PASSAGEWAY;
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 |