Abstract: A cooling system including a refrigerant compressor for use in a vehicle for cooling a refrigerated compartment includes a hermetic type compressor containing a DC brushless motor as a compressor driver. An electric generator is actuated by the engine of the vehicle to generate AC electric power which is, in turn, rectified by a rectifier to produce DC electric power for driving the DC brushless motor. A switch is provided to switch over from the electric generator to a commercial AC electric power source. The commercial AC electric power is rectified by the rectifier to supply DC electric power. Thus, the compressor can be driven by a commercial AC electric power source when the engine is stopped. In order to achieve accurate temperature control in the refrigerated compartment when the engine is running, the amount of AC electric power generated by the electric generator is controlled.

Abstract: A transport refrigeration system having a refrigerant compressor which is selectively operable with either an electric motor or an internal combustion engine. The transport refrigeration system conditions a load space to a selected set point via heating and cooling modes in response to a selected one of either a return air sensor or a discharge air sensor. System control is automatically optimized in response to manual selections of the prime mover and the operative sensor by providing first, second, third and fourth control algorithms. Selection of the return air sensor automatically selects the first and third control algorithms for electric motor and internal combustion engine, respectively, and selection of the discharge air sensor automatically selects the second and fourth control algorithms for the electric motor and internal combustion engine, respectively.

Abstract: An auxiliary air conditioning system is provided for vehicles having a primary air conditioning system. The vehicle's primary air conditioning system includes a primary compressor powered by the vehicle engine through a suitable mechanical linkage, a primary condenser, a primary evaporator and blower, and a cooled air distribution system. A preferred auxiliary air conditioning system, according to the invention, is incorporated into the primary air conditioning system and adapted to provide refrigerated air conditioning when the primary compressor and vehicle engine are not operating. One preferred auxiliary air conditioning apparatus includes an auxiliary compressor powered by an auxiliary compressor electric motor, and an auxiliary condenser and electric powered condenser fan. The auxiliary compressor is connected for receiving evaporated refrigerant from the primary evaporator, compressing the refrigerant, and delivering the compressed refrigerant to the auxiliary condenser for condensing.

Abstract: An auxiliary air conditioning system mounts beneath the floor of a vehicle and provides heated or cooled air to the passenger interior. It is of modular construction and may be installed in various forms and modified to serve different functions economically. An air handling module circulates vehicle air through various heating and cooling elements including a closed circuit independent refrigerant system, an evaporator coil connected to the engine mounted refrigerant compressor, a heating coil connected to engine coolant circuit and a resistance heater. Various combinations may be arranged to suit requirements and the system is economically modified. The air handling module is direct current powered to operate on vehicle electric system. An A.C. to D.C. converter module permits operatoin from an off the road power source.

Abstract: The invention refers to an arrangement at a refrigerator cabinet (10) having an absorption refrigerating apparatus (16,18) operated by a heating cartridge (40) from at least one electric current source or by a gas burner (38). The arrangement shows a control apparatus (74) which automatically starts the gas burner (38) when the supply of current to the heating cartridge (40) ceases. The refrigerating apparatus (18) is with exception of its evaporator (16) enclosed in a heat insulated chamber (20) through which surrounding air circulates for cooling of the refrigerating apparatus (18).

Abstract: An automobile air conditioning system for controlling the inside temperature of an automobile to maintain the inside temperature in a comfortable range or to protect the contents of the automobile from becoming overheated on excessively hot days or to prevent freezing on cold days when the automobile is parked or not in use is disclosed.

Abstract: A heating container apparatus is provided for supplying heated air into a heating container on a vehicle for heating or keeping warm the cargo in the heating container, including a burner with an atomizing glow plug and an ignition glow plug; a heat exchanger for recovering heat generated by the burner; an air blower device for circulating heated air; a temperature control device, and a voltage control device. The voltage control device is supplied with electric power from a commercial power feed line to produce a voltage equal to the voltage of a power supply mounted on the vehicle, thereby keeping the interior of the heating container warm even when the engine of the vehicle is stopped. The temperature control device keeps the temperature in the heating container in a suitable temperature range at all times.

Abstract: A device controlling a heater or warmer on an automobile has a charger for charging, with an external commercial electric power supply, a battery which serves as a power supply for energizing an atomizing glow plug which heats and atomizes fuel, an igniting glow plug which ignites the fuel as atomized by the atomizing glow plug, and blowers. The device also has a driver for driving the blowers with electric power produced by rectifying the power from the commercial electric power supply. The glow plugs of a high power requirement are energized by the battery even while the automobile is at rest, and the battery is charged by the charger. The blowers are driven by electric power produced by rectifying the power from the commercial electric power supply.

Abstract: An auxiliary power system for a truck or other heavy duty vehicle. A secondary engine which is smaller than the vehicle's main engine is used to generate heat and electrical power, and to drive an auxiliary air conditioning system The coolant systems of the two engines are interconnected so that when the main engine is off and the secondary engine is on, waste heat from the secondary engine is transferred by coolant flowing through the water jacket of the secondary engine to the main engine and also to heater cores in the truck's cab and sleeper. An electrical generator driven by the secondary engine provides electrical energy. The auxiliary air conditioning system includes an auxiliary compressor and an auxiliary condenser, and connections for efficiently interconnecting the auxiliary air conditioning system with the truck's primary air conditioning system.

Abstract: A compressor driven by a three phase electric motor is contained within a housing that is filled with refrigerant and is hermetically sealed with a terminal board. The terminal board has three electrical feedthrough terminals for coupling three of the motor's six winding leads to a three phase power source. An insulator having a fourth terminal is disposed inside the housing and is attached to one of the feedthrough terminals. In a high voltage application, such as 4160 volts, the fourth terminal provides a convenient location to attach the motor's three remaining leads to a common point. In a low voltage hookup, such as 2400 volts, the fourth terminal is disregarded, and the three remaining leads are separated and paired up with the three leads that are connected to the feedthrough terminals.

Abstract: The present invention entails a power switching system for a tractor-trailer that can be selectively actuated to direct power to the tractor unit from an auxiliary power source such as a refrigeration unit mounted on the trailer. When the tractor-trailer is in a parked position, power can be furnished to the tractor and to energy consuming components thereof through an auxiliary power source carried by the tractor-trailer, thereby improving the total fuel economy of the rig. In the power switching system of the present invention, there is provided a switch assembly for operatively connecting run, accessory, start/ignition circuits to the auxiliary power source. In addition, an oil and water heater circuit can be powered through the same auxiliary power source. Finally, a trickle charge may even be directed from the auxiliary power source to the battery of the tractor engine.

Abstract: A mobile mortuary comprising an elongated container defining an interior compartment for cadavers. Cadaver trays are supported in the compartment for movement through an opening in the front wall of the container to an extended position. An evaporator is mounted on the container within the compartment, and a compressor-condenser unit and generator are mounted on the container outside the compartment. The mortuary is mounted on wheels for movement upon a supporting surface.

Abstract: An auxiliary power system for a truck or other heavy duty vehicle. A secondary engine which is smaller than the vehicle's main engine is used to generate heat and electrical power, and to drive an auxiliary air conditioning system. The coolant systems of the two engines are interconnected so that when the main engine is off and the secondary engine is on, waste heat from the secondary engine is transferred by coolant flowing through the water jacket of the secondary engine to the main engine and also to heater cores in the truck's cab and sleeper. An electrical generator driven by the secondary engine provides electrical energy. The auxiliary air conditioning system includes an auxiliary compressor and an auxiliary condenser, and connections for efficiently interconnecting the auxiliary air conditioning system with the truck's primary air conditioning system.

Abstract: A small lightweight auxiliary power plant including an engine, electrical alternator, water pump, air conditioning compressor and a heat exchanger is mounted at a convenient location on the tractor of a truck or other large vehicle. The main engine of the truck operates the existing truck air conditioning and heating system in a normal manner when the main engine is running. When the main engine of the truck is not operating and the smaller engine of the auxiliary power plant is operating, the truck air conditioning and heating system is operated by the auxiliary power plant. The heat exchanger of the auxiliary power plant then utilizes the heat of exhaust gases generated by the auxiliary power plant engine to warm the truck engine during the time it is not operating so that easy starting of the truck engine is made possible even in very cold weather. The exhaust gases from the auxiliary engine are also utilized to heat the lubricating oil of the main engine.

Abstract: A gas turbine driven power generating system to convert fuel to power, both mechanical and electrical, and heat.

Abstract: A method of enhancing the defrost and heating cycles of a transport refrigeration system for a straight truck, which refrigeration system includes a single refrigeration circuit selectively connectible to a compressor driven by the truck engine, or to a stand-by compressor driven by a motor connected to a stand-by source of electrical potential. The enhancement is achieved by slowly but continuously storing heat in an accumulator from the truck electrical system, or from the stand-by source of electrical potential, such that liquified refrigerant introduced into the accumulator during a defrost or heating cycle is immmediately vaporized. The slow but continuous rate of heat storage accumulates the requisite heat without unduly loading the truck electrical system or the truck engine.

Abstract: A small lightweight auxiliary power plant including an engine, electrical alternator, water pump, air conditioning compressor and a heat exchanger is mounted at a convenient location on the tractor of a truck or other large vehicle. The main engine of the truck operates the existing truck air conditioning and heating system in a normal manner when the main engine is running. When the main engine of the truck is not operating and the smaller engine of the auxiliary power plant is operating, the truck air conditioning and heating system is operated by the auxiliary power plant. The heat exchanger of the auxiliary power plant then utilizes the heat of exhaust gases generated by the auxiliary power plant engine to warm the truck engine during the time it is not operating so that easy starting of the truck engine is made possible even in very cold regions. The electrical alternator of the auxiliary power plant supplies electrical power for the truck electrical system when the truck engine is not running.

Abstract: A refrigeration apparatus includes a compressor, a condenser and a eutectic plate adapted to be mounted in the refrigerated space in place of, or in heat-conducting relation with, cooling coils. The compressor is of a type operated by a battery which is recharged by a generator. In turn, the generator is powered by any convenient external power source, such as an internal combustion engine. The refrigeration apparatus also includes a control device which senses the voltage at the battery terminals, thereby determining whether or not the engine is running. The control device chooses between two different cooling levels. A low (warmer) cooling level is chosen if the engine is not running. A high (cooler) cooling level is chosen when the motor is running.

Abstract: An automobile cooling system where electrical energy derived from solar cells are used to drive the pump and fan of a vehicle mounted evaporative cooling system. Automatic control of the system is provided by a thermostatic switch located within the vehicle.

Abstract: A safety arrangement in a gas-operated apparatus, such as an absorption refrigerator, having a safety device that controls the gas system and, when required, automatically re-ignites the flame of the gas burner that has become extinguished. The system has a thermostat that is connected to a switch for opening a gas valve when it is necessary to supply gas to the burner. A filament or igniter is also provided which is arranged adjacent to the burner and has a switch which breaks the circuit to the gas valve when a sensor or flame detector at the burner is exposed to a flame.

Abstract: A transport refrigeration unit of the mechanical refrigeration type and including a start-stop mode of operation is driven by an engine 20 which is coupled through belt 34 to a common shaft 32 for the condenser fan 26 and evaporator fan 30, through a clutch 38 which is selectively operable to drive the shaft 32 when the engine 20 is operating, and to decouple from the shaft 32 when the engine 20 is not operating so that ram air pressure to the condenser fan will in turn drive the evaporator fan to provide at least some air circulation in the interior space of the trailer.

Abstract: Apparatus for dehumidifying air is disclosed. The apparatus comprises a receiver for a hygroscopic liquid, a regenerator, a dehumidifier, a heat pump and means for circulating four different streams of the hygroscopic liquid. The heat pump has an energy input section, a heat collecting section and a heat rejecting section, and is operable, when the energy input section is energized, to transfer heat from the heat collecting section at a given temperature to the heat rejection section at a higher temperature. The apparatus has means for circulating the hydroscopic liquid: (1) in a first stream from the receiver into heat transfer relationship with the heat rejection section of the heat pump and then to the regenerator, where it is sprayed; (2) in a second stream from the regenerator to the receiver; (3) in a third steam from the receiver to the dehumidifier, where it is sprayed; and (4) in a fourth steam from the dehumidifier to the receiver.

Abstract: A flashing lamp for vehicles incorporates a base with an upstanding integral boss defining a worm gear. The base and the boss are of plastic or equivalent material. A frame is rotatable about the axis of the worm gear, the frame supporting at least one lamp. A motor is supported from the frame and directly rotates a worm which engages the worm gear. Brush and ring elements are provided to transmit electrical energy through the stationary base to the rotating frame and its electrical components.

Abstract: A novel refrigerator control system is disclosed which comprises an inverter for driving a motor for a compressor, and a change-over device for driving the compressor directly with a commercial power supply when the compressor motor is not driven by the inverter.

Abstract: A method of air conditioning a building having a substantially lesser nighttime than daytime cooling load which comprises (a) around the clock operation of a chiller powered by heat from a fuel-fired engine which drives an electric generator, (b) during the nighttime freezing ice by the heat-operated chiller in combination optionally with an electric chiller powered by the generator, and (c) in the daytime cooling the building by the melting of the ice in combination with the heat-operated chiller and optionally in further combination with the electric chiller.

Abstract: An air cooling unit for a vehicle having a source of energy, such as heat from crankcase oil or transmission oil or a source of electrical power, such as an alternator. The cooling unit is of the absorption type and includes a condenser in series with an evaporator, an absorber and a boiler. The cooling unit is provided with a refrigerant, such as ammonia, and an absorption fluid, such as water. Hydrogen gas can optionally be placed in the cooling unit to move between the evaporator and the absorber to reduce the partial pressure of the refrigerant. A return line in the form of a coil extends from the boiler to an inlet of the absorber to return the absorption fluid to the absorber after the absorption fluid has been separated by heat from the refrigerant gas in the boiler. All of the components of the cooling unit are sized, shaped and located so that the cooling unit provides a compact package capable of being fitted into a relatively small space.

Abstract: An auxiliary power system for an air conditioner and heater of a vehicle includes an auxiliary motor which is selectively connected by an electromagnetic clutch of a jack shaft assembly to drive the compressor of the vehicle's air conditioner. The jack shaft assembly reduces the RPM of the auxiliary motor to an RPM suitable for operating the compressor. The auxiliary engine has a cooling system and an exhaust system which are respectively connected to the cooling and exhaust systems of the vehicle's main engine. A baffle plate is provided at the point of connection to direct the flow of exhaust gases from the auxiliary engine into the exhaust system of the main engine. Solenoid actuated valves circulate coolant fluid from either the auxiliary or main engine to selectively heat water in a tank or to heat the interior of the passenger compartment of the vehicle. An auxiliary fan cools the condenser and radiator of the vehicle when the auxiliary engine is operating.

Abstract: The disclosure relates to an environmental protection system comprising a Rankine cycle power loop wherein a working fluid is heated by either the combustion of a fuel or by heat exchange from internal combustion engine exhaust. A high frequency turboalternator is driven by the power loop working fluid for the production of high frequency alternating current. An electrically driven Rankine cycle cooling loop uses a second working fluid to effect cooling of a desired media.

Abstract: A refrigeration system alarm device includes a temperature monitoring circuit which detects when a temperature within the refrigeration system exceeds a preselectable temperature reference level. The device also includes an alternating current power monitor circuit which detects when any one of a plurality of alternating current power inputs is interrupted. The device also includes a direct current power monitor circuit which includes a battery and a comparator circuit for determining when the voltage of the battery is below a predetermined level. When an excessive temperature is detected or an alternating current power input interruption is detected or the battery voltage is below the predetermined reference level, a visual or audible alarm signal is generated.

Abstract: An absorption cold and warm water system utilizing solar heat in which heat source water obtained by heating water by the solar heat and a main heating source are used is selectively made to function as a warm water system, a first heat pump and a second heat pump in accordance with temperature conditions associated with the heat source water.

Abstract: A temperature control device for a vehicle cabin comprises a duct which communicatively connects, at least, inside the vehicle cabin and the external atmosphere; a damper provided within the duct and for shutting off flow of air inside and outside the vehicle cabin; drive means for driving the damper to open and close; a fan to produce the air flow within the duct; a fan motor to actuate and drive the fan; detecting means to detect temperature changes within the vehicle cabin; and a power source separately provided from an ordinary power source and for supplying power to the fan motor. A temperature increase within the vehicle cabin above a predetermined temperature is detected by the detecting means, then electric power is supplied to the fan motor from the separately provided power source, and the temperature within the vehicle cabin is controlled in utilization of the duct, in which the damper is in an open state.

Abstract: The invention is an energy-efficient all-electric environmental control system (70). The system includes a cabin compressor (16) and a Freon compressor (14), both of which are commonly driven by a two-speed electric motor (12). The motor (12) operates at low speed at low altitudes and on the ground to drive the Freon compressor (14). Freon fluid then cools the electric motor (12) and the cabin (18) and avionics (56) by means of the evaporator/dehumidifier systems (72) and (74), respectively. At high altitudes the electric motor (12) runs at high speed to drive the cabin compressor (16) to provide pressurization for the cabin (18). In this operation mode, the Freon compressor can be disconnected via an electromagnetic clutch (48).The ECS (70) also includes a liquid Freon pump (52) which can be utilized when the Freon compressor is disconnected or bypassed to circulate liquid Freon to cool the electric motor (12) and to circulate through the evaporators (38) and (76).

Abstract: A solar powered refrigeration unit includes an array of solar cells connected in series-parallel configuration to produce more than 12 volts dc. One side of the array is grounded, and the positive output is connected through a diode to the positive terminal of a storage battery. The diode is configured to prevent the battery discharging through the solar cell array. The array is also connectd to one side of a back to back diode arrangement, the junction of which is connected through a thermocouple to a voltage controlled relay. The refrigeration unit compressor is connected to the relay, which is switched on by the thermocouple. The back to back diode arrangement permits the greater voltage of the solar cell array or the storage battery to power the compressor.

Abstract: A vapor cycle refrigeration air chiller having two separate refrigeration systems in a single unitized frame. The first system producing a continuous cooling effect when supplied with alternating current power from an external source. The second refrigeration system operates to cool eutectic plates during alternating current operation. Air distribution is modified by a damper integral with a transporter containing the chiller and airborne food tray carts. Cooled air enters the carts from the chiller for pulldown and storage during alternating current operation. For transportation the chiller utilizes a self-contained battery operated, direct current fan with the damper spring loaded open, allowing the air to circulate over the eutectic plates and then around the food tray carts maintaining product temperature.

Abstract: An apparatus and method for recovering atmospheric moisture utilizing a wind driven electrical generator for powering a mechanical refrigeration system for condensing atmospheric moisture. A housing is provided forming an atmospheric duct with a turbine mounted therein and drivingly connected to the electrical generator. The refrigeration system includes an evaporator positioned in the atmospheric duct whereon water vapor is condensed. In the practice of the method for recovering atmospheric moisture, electrical current is generated from wind and powers the refrigeration system which includes the evaporator. Atmospheric moisture is condensed on the evaporator and collected.

Abstract: A transport refrigeration unit for mounting on the front face of a trailer 1 or the like is provided with an exterior section 2 construction and arrangement in which a relatively low center of gravity is obtained by providing a frame means 25 in the lower portion of the exterior section mounting an internal combustion engine 26 at a relatively low level with a refrigerant compressor 27 at a somewhat higher level, and an electric motor 28 below the compressor when such a motor constitutes a part of the power pack, these elements being arranged so that the driving belts and pulleys in the lower part of the section are in the center portion of the section to promote their accessibility, and a significant open area is provided above the power pack to promote access to those parts in the upper portion of the exterior section behind the condenser 9.

Abstract: In a refrigerator cabinet operated with an absorption refrigerating apparatus having an evaporator for cooling a refrigerating chamber and an evaporator for cooling a freezing chamber. The refrigerator condensate is supplied to the freezing evaporator and partly evaporated, while the residue flows by gravity into the refrigerating evaporator. At very low ambient temperature the freezing evaporator receives too little refrigerant, or else the refrigerating evaporator too much. This situation is avoided in that an evaporator part for cooling of the freezing chamber is supplied with refrigerant condensate at short intervals during periods when the thermostat for the refrigerating chamber is in an off position.

Abstract: The system includes a container and a door therefor, each comprised of inner and outer shells made of a moisture impervious material having sealed therebetween an insulating material. A holding plate, containing a eutectic solution and a refrigerant evaporator coil, is disposed within the container. A refrigerating circuit is provided including a compressor and condenser coil connected to the evaporator coil. A control unit monitors the eutectic solution temperature and the refrigerant temperature at the compressor output. It minimizes the operating times of the compressor and condenser fan necessary to maintain preferred temperatures inside the container in order to minimize the drain on batteries which are provided for powering the same. In addition, an array of solar cells is provided and the control is adapted for powering the compressor and condenser fan with their output when it is above the predetermined minimum operating level.

Abstract: A refrigerated display case having a mechanism for impeding the formation of condensation around the frame of the opening of the display case or at the junction of a door and a case frame of the display case. In one preferred embodiment, the ballast used in connection with the lights on commercial refrigerators and freezers are secured to the base in a manner which allows the heat generated by the ballast to be used to raise the temperature of the case frame. In another preferred embodiment the return conduit of the refrigeration system is employed adjacent the case frame for transferring heat from the refrigerant in the conduit to raise the temperature of the case frame as well as to increase the efficiency of the refrigeration system. In both of these embodiments, electrical resistance wires are included to supplement the heating provided by the ballast and the refrigeration system to ensure that condensation is prevented from forming on a frame or other desired portions of the case.

Abstract: A heating and/or cooling system comprising a windmill for driving a first refrigerant compressor in parallel with a second refrigerant compressor driven by an electric motor or other power means. The second compressor operates the system when the wind velocity is low. When the wind velocity becomes high enough, the refrigerant pressure created by the wind driven compressor, is used to automatically shut off power to the second compressor. The wind driven compressor then takes over the function of the second compressor.

Abstract: An air conditioning system primarily intended to be installed in an automative vehicle for selectively heating or cooling the passenger compartment for comfort as might be desired by the occupants.The system is completely battery operated and may be programmed to cool or heat the compartment without the engine of the vehicle operating. In addition since the system contains its own battery electrical emergency power may be transferred to the vehicle starting system should condition necessitate such.

Abstract: A self-contained, self-propelled air-conditioning system is provided for supplying air to structures, such as aircraft on the ground at airports. The aircraft are of the type having an inlet duct for conveying the air through the structure. The system includes a suitable truck having a frame or chassis mounted on wheels. The system also includes a diesel engine separate from the engine of the truck mounted on the chassis for supplying mechanical energy and an electrical generator mechanically connected to the diesel engine for changing the mechanical energy into electrical energy. A ventilation system is mounted on the frame and is electrically connected to the generator for moving air from the ambience to the inlet duct. A pair of independent refrigeration systems, each including a compressor, are mounted on the frame. The compressors are electrically connected to the generator. Each refrigeration system cools the moving air independently from the other refrigeration system.

Abstract: In a mobile absorption refrigeration system wherein the refrigerator has at least one electric heater and a gas burner, the refrigeration system is connected to a vehicle by way of a separable plug assembly which includes one circuit for supplying electric power to the heater, and a control arrangement disabling the gas heater as long as the electric power source of a towing vehicle is connected to the refrigeration system.

Abstract: An absorption refrigeration system has an electric heater connectable to an electric power source, and a gas burner connectable to a gas supply. A voltage responsive circuit is connected to disable the gas burner circuit when the voltage of an electric supply means is above a determined level, and to disable the electric heating circuit and enable the gas heating burner when the voltage is below the determined value.

Abstract: An automatic control system for an absorption refrigerator in a vehicle, such as a recreational vehicle, which is connected to a motor-driven generator. The refrigerator is operated alternatively by either 110 A.C. voltage, 12 volt D.C. voltage, or by gas. If gas is only available, the refrigerator is automatically operated by that means, however, the ignition of the gas burner is prevented when the vehicle is stopped in a filling station and the generator ceases to operate. The arrangement has means which delays the closing of a circuit through a control system after another circuit, including a heating cartridge, has been interrupted.

Abstract: In a preferred embodiment, a thermostatically-controlled variable air-circulation mechanism and a thermostatically-controlled coolant-pump circulatable of coolant from a coolant vessel to the fan-containing cooling-coils air-space enclosure cyclically, and a coolant vessel-thermostat and freezing coils connected with an electrical freezer mechanism, are powered by dual batteries in electrical parallel when in use, and the freezer mechanism by solely one thereof when ignition is off for an automobile by virtue of solenoid switch, the fans being run in electrical series at predetermined lower temperatures and in parallel at predetermined higher temperatures by virtue of circuitry and thermostatically-controlled other solenoid switches, maximum ice-production being controlled thermostatically.

Abstract: A compact refrigeration unit supported by a generally rectilinear frame structure with front and back frame members having their axial planes spaced apart along the long axis of the frame is provided with a first selectively energized prime mover positioned within the frame with its relatively long rotary drive shaft in alignment with the long axis of the frame and a second selectively energized prime mover positioned within the frame with its relatively short rotary drive shaft extending from front to back frame member planes at right angles to the shaft of said first prime mover, there being clutch means to connect said first prime mover to a refrigerant compressor within said frame to drive said compressor when said first prime mover is energized and said clutch is engaged and there being right angle drive means including flexible connections to connect said compressor and said second prime mover to drive said compressor when said second prime mover is energized and said first prime mover is deenergized wi

Abstract: A refrigeration type air conditioning apparatus employing a heat transfer medium for use in a vehicle having a large passenger area, comprising a vehicle engine driven compressor and a pair of electric motor driven compressors, all of which are connected to a pair of condenser coils via a discharge manifold and to a split evaporator coil via a suction manifold while each of the condenser coils is connected to one half of the evaporator coil via an expansion valve.

Abstract: A portable battery operated hot-cold food storage unit comprises a rectangular shaped housing having an inner metallic shell with an insulation layer sandwiched between the housing and the shell. A movable front door is hingeably mounted to the housing. A horizontal partition divides the interior chamber into an upper and lower portion, wherein the upper portion has a plurality of insulating horizontal and vertical shelves therein. The shelves which are adjustable and inter-locking permit the formation of different size compartments. A cooling coil is contained in a first section of the upper portion, wherein the cooling coil communicates with a cooling assembly contained in the lower portion. An electric motor powered by a household current or a storage battery powers the compressor of the cooling assembly. A heating coil is contained in a second section of the upper portion, wherein the heating coil is thermally heated by a heating element.

Abstract: A small lightweight auxiliary power plant including an engine, electrical alternator, water pump, air conditioning compressor and a heat exchanger is mounted at a convenient location on the tractor of a truck or other large vehicle. The main engine of the truck operates the existing truck air conditioning and heating system in a normal manner when the main engine is running. When the main engine of the truck is not operating and the smaller engine of the auxiliary power plant is operating, the truck air conditioning and heating system is operated by the auxiliary power plant. The heat exchanger of the auxiliary power plant then utilizes the heat of exhaust gases generated by the auxiliary power plant engine to warm the truck engine during the time it is not operating so that easy starting of the truck engine is made possible even in very cold regions. The electrical alternator of the auxiliary power plant supplies electrical power for the truck electrical system when the truck engine is not running.