RICHARD D ADAMS
Electrician at Brekenridge Dr, Fort Worth, TX

5437249, Aug 1, 1995

Oct 27, 1993

8/143937

Charles L. Adams - Fort Worth TX
Richard C. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F22B 500

122 17

A water heater is shown having a closed tank with an opening for receiving a combustion chamber, the interior of the tank normally containing water under pressure. A combustion chamber is located within the tank interior and includes a body portion having an open end adjacent the tank opening into which combustible fuel is introduced and ignited in the presence of air to create products of combustion. A flue collector is mounted on the exterior of the closed tank and has an annular chamber surrounding a flue opening for receiving the products of combustion for exhaustion to the atmosphere. An outer wall portion closes one end of the flue opening to provide a closed compartment within the collector which can be pressurized by an external blower. An inner wall portion of the collector has an opening which communicates with the combustion chamber. A fuel supply conduit carries a pressure plate and electrodes which provide controlled ignition of the fuel and air mixture within the opening in the inner wall portion to provide heat to the combustion chamber of the closed tank.

5400962, Mar 28, 1995

Oct 27, 1993

8/144148

Richard C. Adams - Fort Worth TX
Charles L. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F23N 108, F22B 3742

236 20R

A system and method for controlling operation of a water heater provides generating a heating demand signal which a minimum level corresponds to a required heat input for maintaining water temperature in the water tank in case of no exogenous demand for water. Responsive to the heating demand signal, air flow from the forced draft blower and flow of combustible fluid from the combustible fluid delivery system are varied to produce combustion product over a minimum 15 to 1 ratio. This allows water heating to be varied to meet maximum expected exogenous demand or to maintain water temperature with no exogenous demand.

5713515, Feb 3, 1998

Dec 5, 1995

8/567471

Charles L. Adams - Fort Worth TX
Richard C. Adams - North Richland Hills TX

PVI Industries, Inc. - Fort Worth TX

F23N 108, G05D 1500

236 20R

In a fluid heating apparatus having a fluid tank, a combustion chamber communicating with the fluid tank for heat exchange, and a combustible fluid delivery system coupled to the combustion chamber, a plurality of valves are individually configured in either an off-state or an on-state for delivering combustible fluid to the combustion chamber. Depending on the configuration of the multiple valves, the rate at which combustible fluid is supplied to the combustion chamber may be varied in response to a heat demand signal. Individual valve signals are generated for each of the multiple valves in response to the heat demand signal to place the multiple valves in a configuration to supply combustible fluid at predetermined rates. The demand signal is calculated in response to reading temperature at an inlet temperature probe and an outlet temperature probe, wherein the outlet temperature probe is located nearer a fluid outlet from the fluid tank than is the inlet temperature probe. The heat demand signal may also be a function of the excess of a set point temperature over a temperature measured by the outlet temperature probe.