US3120344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means for an induction circulator unit
Assignee: Worthington Corp
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Filing: 1962-07-09
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Granted: 1964-02-04
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Horace E Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/01; F24F11/00; F24F11/30; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F11/80; F24F11/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A CONTROL MEANS FOR REGULATING THE PASSAGE OF AIR COMPRISING: (A) A CASING HAVING AN OPENING THEREIN, (B) A HEAT EXCHANGE MEANS ADJACENT TO AND SUBSTANTIALLY COVERING AT LEAST ONE-HALF THE OPENING, (C) A DAMPER MEANS ROTATABLY DISPOSED INTERMEDIATE THE OPENING AND ADAPTED TO BE SELECTIVELY POSITIONED THEREIN BETWEEN THE PORTION OF THE OPENING ADJACENT THE HEAT EXCHANGE MEANS AND THE PORTION OF THE OPENING REMOTE THEREFROM TO CONTROL THE FLOW OF AIR THROUGH EITHER OF SAID PORTIONS OF THE OPENING, (D) A SOURCE OF PRESSURE AIR, (E) ACTIVATING MEANS OPERATED BY THE PRESSURE AIR AND CONNECTED TO THE DAMPER MEANS TO SELECTIVELY POSITION THE DAMPER MEANS, (F) A VARIABLE BLEED-OFF VALVE OPERATIVELY ASSOCIATED WITH THE ACTIVATING MEANS TO REGULATE THE POSITION OF THE ACTIVATING MEANS, (G) A MOVABLE ELEMENT IN THE BLEED-OFF VALVE, ONE END OF WHICH VARIES THE AMOUNT OF PRESSURE AIR BLED OFF AND THE OTHER END THEREOF FULCRUMED, (H) THE FULCRUMED END OF THE MOVABLE ELEMENT HAVING A PAIR OF SPACED OPENINGS FORMED ON EITHER SIDE OF THE FULCRUM,
Claim 2
Dependent Claim
173 words
A CONTROL MEANS FOR REGULATING THE PASSAGE OF AIR COMPRISING: (A) A CASING HAVING AN OPENING THEREIN, (B) A HEAT EXCHANGE MEANS ADJACENT TO AND SUBSTANTIALLY COVERING AT LEAST ONE-HALF THE OPENING, (C) A DAMPER MEANS ROTATABLY DISPOSED INTERMEDIATE THE OPENING AND ADAPTED TO BE SELECTIVELY POSITIONED THEREIN BETWEEN THE PORTION OF THE OPENING ADJACENT THE HEAT EXCHANGE MEANS AND THE PORTION OF THE OPENING REMOTE THEREFROM TO CONTROL THE FLOW OF AIR THROUGH EITHER OF SAID PORTIONS OF THE OPENING, (D) A SOURCE OF PRESSURE AIR, (E) ACTIVATING MEANS OPERATED BY THE PRESSURE AIR AND CONNECTED TO THE DAMPER MEANS TO SELECTIVELY POSITION THE DAMPER MEANS, (F) A VARIABLE BLEED-OFF VALVE OPERATIVELY ASSOCIATED WITH THE ACTIVATING MEANS TO REGULATE THE POSITION OF THE ACTIVATING MEANS, (G) A MOVABLE ELEMENT IN THE BLEED-OFF VALVE, ONE END OF WHICH VARIES THE AMOUNT OF PRESSURE AIR BLED OFF AND THE OTHER END THEREOF FULCRUMED, (H) THE FULCRUMED END OF THE MOVABLE ELEMENT HAVING A PAIR OF SPACED OPENINGS FORMED ON EITHER SIDE OF THE FULCRUM,
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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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |