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US3780940A Expired / Lapsed US ⏱️ 0.0 years remaining

Control system and control device therefor or the like

Assignee: Robertshaw Controls Co
•
Filing: 1972-06-01
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Granted: 1973-12-25
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Expires: 1992-06-01
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Abstract

Abstract A control device for interconnecting a source of fuel to a burner, the control device having a valve seat and a movable valve member for controlling the valve seat. A movable selector is carried by the control device and a clutch is adapted to interconnect the selector to the valve member, the clutch having means for moving the valve member from an ''''off'''' position to a full ''''on'''' position thereof, as the selector is moved in one direction from its ''''off'''' position to a first position thereof. The clutch keeps the valve member in the full ''''on'''' position thereof as the selector is moved in the one direction from the first position thereof to a second position thereof. The clutch thereafter moves the valve member from its full ''''on'''' position to a reduced ''''on'''' position thereof as the selector is moved in the one direction from the second position thereof to a third position thereof, the clutch being adapted to move the valve member from the reduced ''''on'''' position thereof back to the full ''''on'''' position thereof as the selector is moved in a direction opposite to the one direction from the third position thereof to the second position thereof.

Inventors

  • 👤 F Genbauffe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 09:54
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/12; F24C3/126; F24C3/128; F23; F23N; F23N1/00

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 266 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnecting said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for automatically moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from said source to said burner means, said means of said clutch means automatically keeping said valve member means in said full ''''on'''' position thereof as said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means automatically moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means automatically moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof.
Claim 2
Dependent Claim 266 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnecting said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for automatically moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from said source to said burner means, said means of said clutch means automatically keeping said valve member means in said full ''''on'''' position thereof as said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means automatically moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means automatically moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof.
Claim 3
Dependent Claim 49 words
A fuel control system as set forth in claim 1 wherein said means of said clutch means automatically keeps said valve member means in said full ''''on'''' position thereof as said selector means is moved in said opposite direction from said second position thereof to said first position thereof.
Claim 4
Dependent Claim 54 words
A fuel control system as set forth in claim 2 wherein said means of said clutch means automatically moves said valve member means from said full ''''on'''' position thereof to said ''''off'''' position thereof as said selector means is moved in said opposite direction from said first position thereof to said ''''off'''' position thereof.
Claim 5
Dependent Claim 35 words
A fuel control system as set forth in claim 1 wherein said selector means is rotatably mounted to said control device whereby said one direction and said opposite direction of movement thereof are rotational directions.
Claim 6
Dependent Claim 298 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnecting said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from sAid source to said burner means, said means of said clutch means keeping said valve member means in said full ''''on'''' position thereof said said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof, said selector means being rotatably mounted to said control device whereby said one direction and said opposite direction of movement thereof are rotational directions, said selector means being movable in said directions without axial movement thereof.
Claim 7
Dependent Claim 298 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnecting said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from sAid source to said burner means, said means of said clutch means keeping said valve member means in said full ''''on'''' position thereof said said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof, said selector means being rotatably mounted to said control device whereby said one direction and said opposite direction of movement thereof are rotational directions, said selector means being movable in said directions without axial movement thereof.
Claim 8
Dependent Claim 51 words
A fuel control system as set forth in claim 1 wherein said selector means is adapted to be set in any selected position between said first and second positions thereof to control the temperature output effect of said burner means at a temperature selected between said first and second positions thereof.
Claim 9
Dependent Claim 39 words
A fuel control system as set forth in claim 1 wherein said selector means is adapted to be set in any selected position between said second and third positions thereof to control the flame height at said burner means.
Claim 10
Dependent Claim 339 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnected said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from said source to said burner means, said means of said clutch means keeping said valve member means in said full ''''on'''' position thereof as said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof, said valve member means having a tang means which when moved in said directions causes said valve member means to move relative to said valve seat means, said means of said clutch means comprising a cam member than engages said tang means to cause the same to move in unison therewith when said selector means moves between said ''''off'''' position thereof and said first position thereof and between said second position thereof and said third position thereof.
Claim 11
Dependent Claim 339 words
A fuel control system comprising a source of fuel, a burner means and a control device for interconnected said source of fuel to said burner means, said control device having a valve seat means and a valve member means for controlling said valve seat means, movable selector means carried by said control device, and clutch means carried by said control device for interconnecting said selector means to said valve member means, said clutch means having means for moving said valve member means from an ''''off'''' position thereof to a full ''''on'''' position thereof as said selector means is moved in one direction from its ''''off'''' position to a first position thereof for providing full fuel flow from said source to said burner means, said means of said clutch means keeping said valve member means in said full ''''on'''' position thereof as said selector means is moved in said one direction from said first position thereof to a second position thereof, said means of said clutch means moving said valve member means from said full ''''on'''' position thereof to a reduced ''''on'''' position thereof as said selector means is moved in said one direction from said second position thereof to a third position thereof for providing reduced fuel flow from said source to said burner means, said means of said clutch means moving said valve member means from said reduced ''''on'''' position thereof to said full ''''on'''' position thereof as said selector means is moved in a direction opposite to said one direction from said third position thereof to said second position thereof, said valve member means having a tang means which when moved in said directions causes said valve member means to move relative to said valve seat means, said means of said clutch means comprising a cam member than engages said tang means to cause the same to move in unison therewith when said selector means moves between said ''''off'''' position thereof and said first position thereof and between said second position thereof and said third position thereof.
Claim 12
Dependent Claim 42 words
A fuel control system as set forth in claim 8 wherein said clutch means includes a cam that cams said cam member out of operative engagement with said tang means as said selector means moves between said first and second positions thereof.
Claim 13
Dependent Claim 36 words
A fuel control system as set forth in claim 9 wherein said cam is stationary and said cam member moves relative thereto in unison with movement of said selector means in said directions of movement thereof.

References Cited (Backward Citations)

US3011721A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-24 1977-06-25 1977-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-24 1981-06-25 1981-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-24 1985-06-25 1985-12-25 $7700.00 Window Closed / Lapsed

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