Patent US4602610A successfully refreshed from Google Patents.
US4602610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-rate fuel flow control system for space heater
Assignee: Individual
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Filing: 1981-01-30
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Granted: 1986-07-29
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Expires: 2001-01-30
Abstract
Abstract A dual-rate fuel flow control system for the gaseous or liquid fuel supplied to the burner of a space heater, comprising a valve controllable to supply full fuel flow to the burner at the start of a heating cycle to deliver full heat to the heat exchanger chamber in which circulates the heat transfer fluid, and controllable to supply reduced fuel flow to the burner simultaneously with starting the circulating of the heat transfer fluid from the heat exchanger to the space to be heated.
Inventors
- 👤 George P. McGinnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:52
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/005; F23N2225/00; F23N2225/08; F23N2225/12; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/18; F23N2237/00; F23N2237/10; F23N2237/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
In a space heating system having a furnace provided with a fuel burner for heating a heat transfer fluid circulating through a chamber in said furnace and a fuel line supplying fuel to said burner, said chamber being provided with thermostatic control for starting circulation of said fluid at a first predetermined temperature in said chamber and for stopping circulation of said fluid at a second predetermined temperature in said chamber, the improvement comprising means in said fuel line operated by said thermostatic control for reducing fuel flow to said burner simultaneously with starting said fluid circulation.
Claim 2
Dependent Claim
97 words
In a space heating system having a furnace provided with a fuel burner for heating a heat transfer fluid circulating through a chamber in said furnace and a fuel line supplying fuel to said burner, said chamber being provided with thermostatic control for starting circulation of said fluid at a first predetermined temperature in said chamber and for stopping circulation of said fluid at a second predetermined temperature in said chamber, the improvement comprising means in said fuel line operated by said thermostatic control for reducing fuel flow to said burner simultaneously with starting said fluid circulation.
Claim 3
Dependent Claim
32 words
The improvement of claim 1 wherein said means comprises a normally "on" dual-flow rate valve normally providing full fuel flow therethrough operable by said thermostatic control to provide reduced fuel flow therethrough.
Claim 4
Dependent Claim
44 words
The improvement of claim 1 wherein said means comprises a normally "on" valve, control means for turning said valve "off" upon energizing by said thermostatic control, and a calibrated by-pass line by-passing said valve, said by-pass line supplying reduced fuel flow to said burner.
Claim 5
Dependent Claim
17 words
The improvement of claim 3 further comprising manually adjustable flow rate means disposed in said by-pass line.
Claim 6
Dependent Claim
11 words
The improvement of claim 1 wherein said fluid is atmospheric air.
Claim 7
Dependent Claim
12 words
The improvement of claim 1 wherein said fuel is a gaseous fuel.
Claim 8
Dependent Claim
14 words
The improvement of claim 1 wherein said fuel flow is reduced by about 25%.
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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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |