Patent US3071160A successfully refreshed from Google Patents.
Patent US3174532A successfully refreshed from Google Patents.
US3174532A
Expired / Lapsed
US
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Overhead gas-fueled heater
Assignee: UNION CHILL MAT CO
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Filing: 1962-04-02
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Granted: 1965-03-23
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Roy E Ferree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
F; F23; F23D; F23D14/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A DOWN BEAM HEATER INCLUDING A SOURCE OF HEAT; AN OPEN-ENDED SLEEVE LOCATED ABOVE AND RECEIVING HEAT FROM SAID SOURCE; A PLATE LOCATED WITHIN SAID SLEEVE ABOVE SAID SOURCE; A CONE-SHAPED HEAT-DIRECTING MEMBER SPACED FROM SAID SLEEVE WITH THE APEX THEREOF DIRECTED DOWNWARDLY AND EXTENDING INTO SAID SLEEVE AND ENGAGING THE CENTER OF SAID PLATE, AND WITH THE BASE THEREOF EXTENDING RADIALLY OUTWARDLY OF SAID SLEEVE; SAID PLATE BEING SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID CONE-SHAPED MEMBER; AT LEAST ONE FLANGED PLATE LOCATED ABOVE SAID MEMBER WITH THE FLANGE THEREOF OVERLAPPING SAID MEMBER; AND AN OPENENDED CASING SURROUNDING SAID MEMBER, SAID SLEEVE, AND SAID PLATE WITH THE OPEN END THEREOF LOCATED ADJACENT SAID SOURCE.
References Cited (Backward Citations)
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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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |