Back to results
US 8,869,835 B1Granted
Dual valve
AssigneeBurner Systems International, Inc.
InventorsStephen Sapp, Timothy Frost
Life of this patent
Estimating the term…
Abstract
A dual valve construction partners first and second valve portions with a mechanical linkage such as gears to operably couple the control stems together. The gears need not be identical and in fact a first gear may have flats so that motion of the first gear need not always move the second gear proportionally. Furthermore, the gears may have differing gear ratios at different portion of the gears.
Claims20
A dual gas valve construction comprising:
- a first valve portion having an inlet, an outlet and a first control stem for adjusting flow of gas from the inlet through the outlet to a first location;
- a second valve portion similarly constructed as the first valve portion and having an inlet spaced from the inlet of the first valve portion, an outlet and a second control stem for adjusting flow of gas from the inlet through the outlet to a second location separated from the first location;
- a mechanical linkage coupling the first control stem to the second control stem to form a dual valve, whereby for at least some rotation of the first control stem, the second control stem is moved through the mechanical linkage;
- said first and second valve portion inlets are spaced apart and are in fluid communication with a common supply;
- and
- the outlets of the first and second valve portions are directed to separate rings of a gas burner.
3 more elements
A dual gas valve construction comprising:
- a first valve portion having an inlet, an outlet and a first control stem for adjusting flow of gas from the inlet through the outlet;
- a second valve portion similarly constructed as the first valve portion having an inlet spaced from the inlet of the first valve, an outlet and a second control stem for adjusting flow of gas from the inlet through the outlet to a location physically separated from the outlet of the first valve;
- at least first and second gears coupling the first control stem to the second control stem, whereby for at least some rotation of the first control stem, the second control stem is moved;
- and
- said inlets of the first and second valve portions are spaced apart and are in fluid communication with a common supply and said outlets of first and second valve portions are directed to separate rings of a gas burner.
2 more elements
Dependencies are inferred from the claim text.