Adjustable water temperature safety control unit
OwnerJames A. Brabazoninventor
Life of this patent
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Abstract
An adjustment water temperature safety control unit (40) includes a pair of control valves (42, 44) interconnected by meshed control gears (100, 106) for opposite inversely proportional actuation responsive to a single control knob (78). The desired maximum hot water temperature and/or the desired minimum cold water temperature can be set by means of adjustable clips (104, 110) on the gears (100, 106), which are located behind a removable panel (26). Volumetric flow rate of the mixture is controlled by at least one valve (56) and control knob (64).
Claims10
An adjustable water temperature control for connection between hot and cold water supply lines and a discharge outlet, which comprises:
- a pair of control valves, one control valve being connected in the hot water supply line and the other control valve being connected in the cold water supply line;
- each control valve being operable to the same extent between open and closed positions;
- means interconnecting said control valves for inverse simultaneous operation over a limited adjustable range in at least one direction for mixing the hot and cold water to the desired temperature in the range;
- and
- a shut-off valve connected between said control valves and the discharge outlet for controlling flow rate;
- said means interconnecting said control valves including:
- a pair of gears, one being connected to one control valve and the other being connected to the other control valve;
- said gears being meshed together for rotation in opposite directions;
- a manual control knob connected to one of said gears;
- and
- means removably secured to one said gears for interfering engagement with the other gear to limit rotation of said gears in the said one direction.
An adjustable water temperature control for connection between hot and cold water supply lines and a discharge outlet, which comprises:
- a pair of control valves, one being connected in the hot water supply line and the other being connected in the cold water supply line;
- each control valve including a valve stem and being operable to the same extent between open and closed positions;
- a pair of gears, one gear being secured to the valve stem of one control valve and the other gear being secured to the valve stem of the other gear;
- said gears being in meshed engagement to interconnect said control valves for predetermined proportional inverse simultaneous operation;
- means associated with said gears for limiting rotation thereof in at least one direction;
- a manula temperature control knob secured to the valve stem of one of said control valves;
- and
- a manual flow control vlave connected between said control valves and the discharge outlet for controlling flow rate of the hot and cold water mixture;
- said limiting means including a peripheral clip removably secured to one of said gears.
An adjustable water temperature control for connection between hot and cold water supply lines and a discharge outlet, which comprises:
- a first control valve connected in the hot water supply line,
- said first valve being operable between open and closed positions;
- a second control valve connected in the cold water supply line, said second control valve being operable between open and closed positions;
- a first gear connected to said first control valve;
- a second gear connected to said second control valve, said first and second gears being in meshed engagement to interconnect said first and second control valves for predetermined inverse but equal operation;
- a first removable clip peripherally secured to said first gear for interference with said second gear to limit relative opening and closing of said control valves in one direction;
- a second peripheral clip removably secured to said second gear for limiting relative opening and closing of said second valve in the other direction;
- a manual temperature control knob attached to one of said first and second gears for controlling proportional mixtures of the hot water and cold water;
- and
- a manual flow control valve connected between said first and second control valves and the discharge outlet for controlling flow rate of the hot and cold water mixture.
The adjustable water temperature control of claim 9, further including:
- a tub including bottom and side walls;
- means defining a flush floor drain in the bottom wall of said tub;
- means defining a flush overflow drain in the wall of said tub;
- and
- means defining a flush fill port in the wall of said tub, said fill port being connected to the discharge outlet.
Dependencies are inferred from the claim text.