| Patent Number |
Title Of Patent |
Date Issued |
| RE37383 |
Pressurized air seal for combustion chamber |
September 18, 2001 |
| Combustion apparatus (10) includes a combustion chamber (12, 212), a cover (24, 208) covering an end wall (14, 210) of the combustion chamber and defining a buffer space (26, 206) therebetween, and a blower (32, 202) external to the cover and supplying air to the buffer space and pre |
| RE33082 |
Combustion product condensing water heater |
October 10, 1989 |
| In a water heating system, vapor in the products of combustion gases is condensed in a secondary heat exchanger positioned in a housing with the primary heat exchanger and combustion chamber. The two heat exchangers are coaxial coils with the secondary coil positioned below the primary. |
| 7343719 |
Automated food processing system and method |
March 18, 2008 |
| An automated food processing system and method is provided that allows food to be dispensed, fried and packaged in a suitable container, which may be an individual portion-sized container. In one embodiment, the system includes separate automated modules for dispensing, frying and pa |
| 6869633 |
Automated food frying device and method |
March 22, 2005 |
| An automated food processing system and method is provided that allows food to be dispensed, fried and packaged in a suitable container, which may be an individual portion-sized container. In one embodiment, the system includes separate automated modules for dispensing, frying and packag |
| 6675746 |
Heat exchanger with internal pin elements |
January 13, 2004 |
| A heat exchanger/heater comprising a tubular member having a fluid inlet end, a fluid outlet end and plurality of pins secured to the interior wall of the tube. Various embodiments additionally comprise a blocking member disposed concentrically inside the pins, such as a core plug or a b |
| 5913289 |
Firetube heat exchanger with corrugated internal fins |
June 22, 1999 |
| A firetube heat exchanger having a tubular member with a fluid inlet end and a fluid outlet end and a plurality of axially aligned fins secured to the interior wall of the tubular member. The axially aligned fins are constructed of at least one sheet of corrugated sheet metal, thereby |
| 5778679 |
Method and apparatus for increasing acceptance and adjusting the rate of pressure variations wit |
July 14, 1998 |
| Methods and apparatus for (a) increasing expansion tank "acceptance" (defined herein as working fluid storage capacity); and (b) adjusting the rate of pressure variations within a prespecified range in precharged fluid storage systems (for example, holding pressure down below a presp |
| 5772113 |
Two-pipe heat pump system with isolated tank coil for domestic hot water |
June 30, 1998 |
| An engine-driven heat pump system is disclosed in which the waste heat from the engine is used to only heat the water contained in a water heater. Space heating may be then provided by circulating the water through an air-handling unit. In order to simplify the operation, the engine's |
| 5758820 |
Heat recovery system |
June 2, 1998 |
| A heat recovery system (including associated methods, apparatus and controls for implementing such a system) integrated in a hot water heating system that is combinable with an air conditioning loop containing hot gas wherein the hot water system selectively utilizes heat recovered from |
| 5558273 |
Two-pipe system for refrigerant isolation |
September 24, 1996 |
| A heat pump system for heating and cooling including a vapor compressor driven by a heat engine in which the refrigerant is isolated from a space being conditioned, by a two-pipe loop that, in a heating mode transfers both refrigeration derived heat and heat rejected by the heat engine i |
| 5171144 |
Pressurized air seal for combustion chamber |
December 15, 1992 |
| Combustion apparatus (10) includes a combustion chamber (12, 212), a cover (24, 208) covering an end wall (14, 210) of the combustion chamber and defining a buffer space (26, 206) therebetween, and a blower (32, 202) external to the cover and supplying air to the buffer space and pre |
| 5033957 |
Vaporizing diesel burner |
July 23, 1991 |
| Diesel fuel is vaporized and then burned on a cylindrical screen flame holder. The fuel is vaporized in a finned, vertical tube vapor generator and directed through a superheater tube past the flame to a flow control valve and nozzle. A flow restriction is provided between a liquid fuel |
| 4798240 |
Integrated space heating, air conditioning and potable water heating appliance |
January 17, 1989 |
| Space heating and cooling and potable water heating are provided by a single appliance. The housing appliance is divided into four sections: a lower water storage section, a middle hardware section, an upper internal air handling section and a side external air handling section which may |
| 4502626 |
Combustion product condensing water heater |
March 5, 1985 |
| In a water heating system, vapor in the products of combustion gases is condensed in a secondary heat exchanger positioned in a housing with the primary heat exchanger and combustion chamber. The two heat exchangers are coaxial coils with the secondary coil surrounding the primary. Gases |
| 4501253 |
On-board automotive methane compressor |
February 26, 1985 |
| A gaseous fuel system for a vehicle including an on-board compressor for recharging an associated pressure storage tank. The compressor and tank are mounted on the vehicle as a structural unit whereby the tank shields the compressor and high pressure gas flow circuits therebetween and |
| 4471907 |
Venturi pressurizer for incompressible-liquid circulating systems |
September 18, 1984 |
| A closed-loop, incompressible-liquid circulating, hydronic heating system, for instance, a hot water heating system, which utilizes a Venturi-type control device to effect communication between the circulating hydronic heating system and a storage tank. The storage tank, which is maintai |
| 4445464 |
High efficiency water heating system |
May 1, 1984 |
| A high efficiency gas fired residential water heater includes an insulated, plastic-lined storage tank. The water in the tank is heated by an external heat exchanger which defines a water-walled combustion chamber. The fuel gas and combustion air burned in the chamber are premixed to a n |
| 4403572 |
Combustion product condensing water heater |
September 13, 1983 |
| In a water heating system, vapor in the products of combustion gases is condensed in a secondary heat exchanger positioned in a housing with the primary heat exchanger and combustion chamber. The two heat exchangers are coaxial coils with the secondary coil positioned below the primary. |
| 4338888 |
High efficiency water heating system |
July 13, 1982 |
| A high efficiency gas fired residential water heater includes an insulated, plastic-lined storage tank. The water in the tank is heated by an external heat exchanger which defines a water-walled combustion chamber. The fuel gas and combustion air burned in the chamber are premixed to a n |
| 4222350 |
Efficient heating and domestic hot water apparatus |
September 16, 1980 |
| An efficient, compact boiler system providing both heating water for heating an enclosed space, such as a home, and domestic hot water for washing and similar purposes, has a limited fluid capacity primary heating coil within a combustion chamber. The coil supplies heated water to a |
| 4175706 |
Spray nozzle |
November 27, 1979 |
| A spray nozzle has a nozzle body defining therein a tubular chamber with an outer wall of generally circular cross-section. A generally coaxial discharge orifice at an end of this chamber has a bounding surface externally of the chamber which forms an included angle toward the chamber |
| 4159081 |
Plural valve, hand-held spray apparatus |
June 26, 1979 |
| Dispensing apparatus has a body defining therein a tubular chamber with an outer wall of generally circular cross-section. A generally coaxial discharge orifice at an end of this chamber is closed by a first valve that includes a member of generally circular cross-section. That member |
| 4148195 |
Liquid piston heat-actuated heat pump and methods of operating same |
April 10, 1979 |
| A heat-actuated heat pump is disclosed having liquid pistons which displace the working gas and transmit power between expanding gas and compressing gas. Power output from expanding sections is transmitted to compressing sections without intervening mechanical shafts or levers, and the p |
