CHARLES R ADAMS, JR
Electrician at Fox 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.

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.

5220887, Jun 22, 1993

Apr 16, 1992

7/869513

Weldon M. Hiddleston - Fort Worth TX
Charles L. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F22B 718

122 17

An improved water heater is shown which includes a water heating tank having external cylindrical sidewalls, an interior, and initially open upper and lower ends. A combustion chamber is connectable to the water heating tank and houses a burner for the combustion of a selected fossil fuel. A fire tube unit of a fixed length is received within the interior of the water heater tank and has an upper transverse wall section, a lower transverse wall section and interconnecting fire tubes. The fire tubes have open interiors which receive the products of combustion from the combustion chamber for heating water contained in the water heating tank. Flanges and resilient seals are located at the upper and lower ends of the water heating tank for securing the fire tube unit within the interior thereof. The resilient seals can be selectively sized to accommodate dimensional tolerances which occur between the fixed length of the fire tube unit and the water heater tank, allowing the components to be assembled in modular fashion.

D528657, Sep 19, 2006

Nov 19, 2004

29/217660

Charles L. Adams - Fort Worth TX, US
Beverly A. Adams - Fort Worth TX, US

2404

D24128

5479913, Jan 2, 1996

Jan 31, 1995

8/381129

Charles L. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F24H 120

126360R

A direct contact water heater is provided having an upright, closed cylindrical tank formed from an outer tank shell. The outer tank shell has a top, a bottom and an external sidewall extending between the top and bottom to define an interior of the tank. A combustion chamber is centrally located within the interior of the tank. Combustible fuel is introduced downward from a combustion means into the combustion chamber and is ignited in the presence of air within the combustion chamber to create products of combustion. A plurality of spray nozzles are connected to a water supply to be heated. The spray nozzles are evenly spaced around and along the length of the combustion chamber for directing water from the water supply into the combustion chamber so that more uniform contact of the water is achieved with the products of combustion to facilitate heating of the water.

5666943, Sep 16, 1997

Nov 2, 1995

8/552007

Charles L. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F24H 120

126360R

A water heater/boiler design is shown having a tank with a submergible, pressurized combustion chamber and a resilient sealing means which divides the interior of the water heater tank into a primary and secondary heat exchange compartments. A forced draft burner is used to heat the combustion chamber with the products of combustion passing through multiple heat exchange surfaces to a flue collector located on the exterior of the device.

4254826, Mar 10, 1981

Sep 11, 1979

6/074554

Charles L. Adams - Fort Worth TX

PVI Industries Inc. - Fort Worth TX

F28F 926, F28D 710

165143

A heat exchanger has a modular construction to create uniformity among several of its components. The heat exchanger utilizes concentric tubes, with one fluid flowing through the inner tube, and the other fluid flowing through the annular space in the outer tube. The inner tube fluid flows back over the outer tube, further exchanging heat, as it is discharged. The heat exchanger includes four cup-shaped modules that nest or slide together. Each module includes a sleeve with a port for one of the fluids. Each module also has a convex portion that slides sealingly into an adjacent module and contains holes for the tubes. The tubes are sealed into the holes in the convex portions, causing each module to define one of the four manifolds necessary for the operation of the heat exchanger.

4981112, Jan 1, 1991

Dec 6, 1989

7/446642

Charles L. Adams - Fort Worth TX
Weldon M. Hiddleston - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F22B 502

122 19

A potable, hot water storage vessel is shown with a metallic body having a water inlet, water outlet and at least one additional opening communicating the vessel interior and exterior. A flexible, non-molded liner is installed within the vessel interior through the additional opening. The liner has integrally formed ports which extend through the vessel inlet and outlets to the exterior of the vessel body. A bolt-on flange is received on the vessel exterior at the inlet and outlet to form a seal with each of the liner ports.

7178543, Feb 20, 2007

Jun 27, 2005

11/167798

Charles L. Adams - Fort Worth TX, US

F03B 1/00, F16K 49/00

137 1, 137 1501, 137337, 137563, 13762411, 25112904

An apparatus is shown for attachment to a plumbing system for the rapid on-demand delivery of hot water through the plumbing system to an ultimate point of use. The apparatus includes a diverter valve located in a hot water supply line upstream of the point of use. The diverter valve is actuated for a predetermined interval by a user to initially purge cold water from the hot water line to a drain. After the preset interval, the valve automatically closes. The initial diversion of cold water standing in the water supply line causes rapid delivery of hot water to the point of use once the diverter valve has completed its cycle.

4545329, Oct 8, 1985

Aug 13, 1984

6/640128

Charles L. Adams - Fort Worth TX

PVI Industries, Inc. - Fort Worth TX

F22B 500

122 17

A water heater is shown which has a water tank having a water inlet, a water outlet, and an opening in a sidewall of the tank. A combustion chamber assembly has a submergible portion which is adapted to be received within the opening in the tank sidewall. The combustion chamber assembly has a mounting flange for detachably engaging a tank mounting flange for mounting the assembly within the tank. The combustion chamber assembly has a plurality of curved fire tubes. Each of the tubes has at least one end which communicates through the mounting flange with the tank exterior. The combustion chamber assembly is removable from the tank by detaching the mounting flanges and sliding the assembly out of the tank opening.