Abstract: A masonry wall system is constructed of concrete blocks, with interconnected insulation inserts. To provide for increased structural reinforcement, a steel butterfly-shaped plate is locked on an elongated rod passing through periodic courses of stacked blocks. The plate is locked perpendicular onto the rod, to rest on the top of the uppermost block in the course to which the stress or locking is applied. A recess is formed in the top of the block to accommodate the plate, which is bowed upwardly. A nut or threaded insert is used to press the plate downwardly; and when the plate lies flat, the desired amount of pressure or stress is applied to the blocks. Additional courses may be applied on top of the one to which the plate supplies the stress, with additional locking rods and plates being threaded onto the ends of previous rods to accomplish this purpose in additional courses of blocks forming the wall system.

Abstract: A corner clip is provided on the edge of a ceiling panel and the end(s) of the clip space the panel from the ceiling runner vertical web. The clip can be a right angle shape having a downwardly projecting portion which fits into a recess in the back of the ceiling panel. The clip can be a disc shape having a downwardly projecting portion which fits into a recess in the back of the ceiling panel.

Abstract: Discussed is a method and apparatus providing moisture resistant seam assemblies for use in inter-connecting building covering panels. The panels provide full-length or, so far as is consistent with thermal expansion, very long panels to eliminate or minimize panel splices. The weather seal or moisture resistant seam runs uninterrupted the length of each panel, and when the panels are assembled, the seam seal isolates inter-connected panels one from another and prevents fluid migration through panel joints.

Abstract: In a demountable office partition system, batten mounts with a base and legs of a resilient hard plastic are snap fit to supporting structures by reason of inwardly directed opposed flanges on the legs. The legs of the batten mounts also have soft plastic externally directed fingers to which a batten may be press fit. Use of the batten mounts permits the batten to be removed without damage. In another embodiment, the base of the batten mounts have a first set of depending inner legs with inwardly directed flanges and a second pair of depending outer legs with outwardly directed flanges outwardly spaced from the inner legs. The batten mount is fabricated of a resilient hard plastic. Again, the batten mounts may be snap fit to a supporting structure. However, in this embodiment, a batten is snap fit to the batten mounts. The batten may be removed from the batten mount without damage due to the resilience of the outer legs.

Abstract: A glass mounting arrangement for mounting a window glass in a window frame comprises a channel-shaped flexible strip which has apertures at intervals therealong. Each aperture sealingly receives an arm of a respective mounting clip. Each mounting clip has a U-shaped portion which seats in a recess in the channel of the strip. The strip with the clips mounted therein is placed on and along the peripheral edge of the window glass before the latter is offered up to the window frame. As the window glass is moved bodily towards the window frame, the arms contact the window frame and correctly position the window glass with respect to the window frame. The arms of the clips elastically deform to allow locking shoulders to pass over the edge of the frame, the arms thereafter resiling to secure the window glass in position. Lips provide additional sealing. The mounting arrangement is particularly suitable for use with a robot.

Abstract: A method for the suspension of panels from a building, to form a final surface, on which plasters are to be applied, whereby the building consists of a load bearing structure and a curtain wall and has an outer surface, facing the panels, and covered with an insulating material. In accordance with the method, supports made of non-rusting material are clamped on the load bearing structure, to form at least one horizontal array of supports, whereby the supports project from the outer surface of the building and from the insulating material. The supports of each of the horizontal arrays are bridged by beam-member(s), whereby the connection between the supports of each horizontal array and the beam-members allows the beam-members to slide on the supports, so that to avoid the development of stresses in the beam-members as a result of temperature variations.

Abstract: An apparatus for facilitating the installation of a flowable insulation in a wall or ceiling cavity comprises a rigid rectangular frame. A pair of transverse runners releasably receives an apertured slide panel and a pair of slide screen panels. When all three panels are received by the runners, they extend between the sides of the frame. A metal screen or wire mesh covers the frame other than at the runners. The apertured panel may be repositioned by removing one of the panels and sliding the other two to a different position then reinserting the removed panel. The frame may be pressed against a wall cavity and the apertured panel positioned so that it is not obstructed. An insulation hose may then inserted through the aperture in the apertured panel and insulation blown into the cavity; subsequently the apparatus may be removed.

Abstract: A simulated solid wood multi panel door is disclosed. Predetermined portions of thin sheets of wood which form the front and back of the door are cut away. The portions are replaced with artificial panels, which panels are mounted within the openings left by the cut away portions. Molding is then preferably placed around the artificial panels.

Abstract: A system comprising transmitting apparatus for transmitting messages to receiving apparatus which have a closed casing for collecting printed sheets into a bundle and also enclosing enveloping material for automatically enveloping the collected bundles of printed sheets. Receiving apparatus (M1, M2, . . . Mn), each having a closed casing (h1, h2, . . . hn) and enveloping material (F1) in said casing, and are intended for installation at stations (UP1, UP2, UPn) intended for the central collection of enveloped bundles or dispatches (FF1) addressed to addressees located in the neighborhood of respective collecting stations. The transmitting apparatus (S1, S2, . . . Sm) are equipped with payment means (b1, b2, bm) through which payment can be made for a transmission service on each transmission occasion, this service including transmission of a message, enveloping the message received and delivering the message or dispatch to the receiving addressee.

Abstract: A heat sealing element, for sealing and simultaneously cutting through at least two layers of thermoplastic film is disclosed. It is particularly adapted for use with a vertical form, fill and seal machine for packaging flowable materials, e.g. chocolate fudge sundae topping, in a lap seamed pouch. The heat sealing element has a portion, which has a greater electrical resistance than the remainder of the element, at the position where the lap seal is to be formed. The portion which has a greater electrical resistance is preferably a portion which is narrower than the remainder of the element, preferably 83 to 94% of the width of the remainder of the element.

Abstract: The invention relates to a machine for packing articles of different sizes which is accordingly intended to use containers that vary in their dimensions and particularly in height.It is characterized in that it includes a working plane 20 and a reference plane 22 that are substantially perpendicular to one another, and an ascending ramp 24-105-106 extending from one to the other, movable devices 23, 23a kinematically connected to a motor 45, guides located on the path that the closure panels 6 must follow in the course of the displacement of container-article sets 1, at least one pressure element 27-54 having a smooth active base 29, mounted to be movable perpendicular to the working plane 20 and elastically urged toward it, at least one pressure element 30-60 having a smooth active face 34, mounted to be movable perpendicular to the reference plane 22 and elastically urged toward it, and means 70 to 72 intended for the fixation of panels 6 of containers 1 equipped with their contents A.

Abstract: Adjustable bucket packaging machine for the packaging of items and literature into a carton having conveyored buckets whose size is readily adjustable by phase adjusters, which move the leading and trailing bucket members about a central member. Alignment of adjacent loading devices is also accomplished by the use of phase adjusters, as well as spacing of flites along a conveyor system which is also adjusted by phase adjusters.

Abstract: An agricultural feed bagging machine including a length adjustable tunnel is provided to permit the adjustment of the compaction resistance offered by the tunnel. The length adjustable tunnel comprises an outer tunnel shell which is movably mounted on a fixed inner tunnel shell so that the length of the tunnel may be selectively varied. A pair of hydraulic cylinders are connected to the outer tunnel shell for moving the outer tunnel shell relative to the inner tunnel shell.

Abstract: An improved attachment ring having forward and rearward attachment positions. A latigo secured to the ring can be easily moved from one attachment position to the other position without detaching the latigo from the ring.

Abstract: A lawn mower for use in a walking mode and a riding mode. Drive of an engine is transmitted in varied speeds to rear drive wheels through stepless transmissions. The transmissions are controllable a first shift member accessible to a driver walking behind the lawn mower, and a second shift member accessible to the driver seated on a driver's seat. Operation of one of the shift members is prohibited when the other shift member is operative. The first shift member is connected to the transmissions through a drive link, a driven link, and a pin removably inserted into bores formed in the two links. A prohibiting device is movable to a position to prevent the pin from extending into one of the bores.

Abstract: A lawn mower self-propel and zone brake control system includes a deck, a ground engaging wheel rotatably coupled to and supporting the deck, a handlebar assembly coupled to the deck, and a transmission coupled to the ground engaging wheel. A pivoting control bail is pivotally mounted on the handlebar assembly and pivots between first and second positions. A power transmitting device connects an engine and the transmission. A zone brake is operatively coupled to the engine and the pivoting control bail and operates in either a first or a second mode wherein the zone brake inhibits rotational movement of and power generation by the engine in the first mode and allows rotational movement of and power generation by the engine in the second mode. The zone brake operates in the first mode when the pivoting control bail is in the first position and operates in the second mode when the pivoting control bail is in the second position.

Abstract: A cotton harvester row unit with an upright moistener column located at low acceleration point in the spindle path near the side of the harvesting drum diametrically opposite the row receiving area, rather than near the forward extremity of the drum, to decrease row unit length, increase spindle time in the column and better align moistener pad fins with the grooves between the barbs on the spindles. The moistener column pivots outwardly and can be accessed away from the row unit housing for servicing the moistener pads and fluid distribution system. The distributor and nozzle are supported outside the housing in both the operating and the access positions.

Abstract: A rotary mower (22) having an improved castering wheel assembly (39, 92) so as to reduce rotation of the castering wheel (4) about its support shaft (6). In one embodiment, a torsion resistance mechanism (2) is interposed between the shaft (3) and mower frame (67), the torsion resistance mechanism (2) including a resilient material (46) rigidly bonded to a sleeve (77) in which the shaft (3) is retained. The resilient material (46) is press fit into a housing (11), the housing (11) being rigidly bonded to the mower frame (67). In another embodiment, a cap (98) housing a spring (102) is threadably attached to the castering wheel support shaft (81). Rotation of the cap (98) compresses spacers (85-90) mounted co-axially on the shaft (81) while urging the shaft (81) in an upward direction (111) so as to prevent axial rotation of the shaft (81) when the castering wheel loses contact with the ground.

Abstract: A full flotation mower deck for a rear engine walk behind lawn mower, such flotation deck including a fixed frame having a pivoting axle, with the mower deck independently supported by anti-scalping wheels and interconnected to the frame by pins with a separate mechanical interconnection between the mower deck and the frame for forward and aft movement in respect thereto.

Abstract: A mulching rotary lawn mower that cuts and returns grass clippings to a lawn wherein the proportion of grass clippings that are finely cut by the rotating cutter blade can be selectively increased or decreased by provision of a collection chamber at the rear of the housing containing the rotating cutter blade, the collection chamber having a mulcher plate with a plurality of openings which can be pivoted from a substantially vertical position wherein the plate is tangential to the circle described by the cutting tips of the blade or moved rearwardly about a 45.degree. angle, thus effectively enlarging the collection chamber while closing the openings therein, so that a greater proportion of the grass clippings cut by the blade are received in the collection chamber, but which clippings, on the average, have been cut a lesser number of times and therefore are coarser than when the plate is in the vertical position. The position of the mulching plate is controlled by a handle readily available to the operator.

Abstract: A single head grape and raisin harvester is disclosed having a single driven oscillating shaker head mounted on a sub-frame enabling the shaker head to center itself on the row of grape vines being harvested. The single row harvester is also provided with a stretchable conveyor belt mounted on interconnected plastic chain links for reliably transporting grapes or raisins to an elongated discharge conveyor which is positioned transversely when collecting and discharging grapes from the harvester into trucks or boxes and is pivoted parallel to the longitudinal axis of the vehicle when moving along roadways.

Abstract: A catalyst-bearing component of a gas turbine engine is provided. Catalytic materials are provided on components defining the gas flow path of the engine, so that emissions of carbon monoxide and unburned hydrocarbons are reduced. The catalytic materials are selected from the group consisting of noble metals and transition metal oxides. The portions of the gas flow path where such materials are advantageously applied include the combustor, the turbine and the exhaust system. The catalytic coating is preferably applied in conjunction with a thermal barrier coating system interposed between a substrate component and the catalytic coating.

Abstract: A method and an arrangement in connection with reverse stranding, comprising drawing conductors through a stationary divider, peripheral tubes peripherically surrounding a central tube and twistable around the central tube recurrently in opposite directions and a twisting device rotatable in opposite directions, into a stranding nozzle or similar. To achieve longitudinal strip winding, a strip is fed into the central tube. The strip is guided to pass through the rotatable twisting device and further between the desired conductors ahead of the stranding nozzle or similar, the stranding nozzle or similar bending the edges of the strip in the desired direction.

Abstract: A breech loaded fuel nozzle cartridge assembly is provided for use with a fuel nozzle capable of use with gaseous or distillate fuels. The cartridge assembly includes an elongated water delivery pipe having an interior through passageway extending from a rearward open end to a forward open end. A mounting coupling is fixed to the exterior of the pipe adjacent its rearward end for use in mounting the cartridge assembly within the rearward end of a fuel nozzle body. The forward end of the cartridge pipe is provided with an interior water swirler and an exterior distillate fuel swirler, while the forward end of the fuel nozzle body is provided with an air swirler so that at the fuel nozzle tip, an outer conical air spray, an intermediate distillate or gaseous fuel spray and an inner conical water spray combine to provide a homogenous mixture at the point of combustion.

Abstract: A method for monitoring the status of a catalytic converter through which a catalyzable fluid, particularly an exhaust gas from an internal combustion engine, flows along a flow direction from an inlet end to an outlet end, includes measuring the temperature of the catalytic converter along the flow direction continuously or at a plurality of measurement points along the flow direction forming a mean temperature value. The temperature of the catalytic converter is measured at least at one measurement point forming an associated local temperature value. The mean temperature value is compared with the local temperature value for deriving a statement as to the status of the catalytic converter.

Abstract: An automotive internal combustion engine is equipped with a hydrocarbon adsorber for the purpose of controlling the emissions of unburned hydrocarbons from the vehicle's tailpipe. Regeneration of the adsorber is achieved by an electronic engine controller operating an air pump and a sample pump, using information from an exhaust gas oxygen sensor.

Abstract: An exhaust tube having an internal butterfly valve is coupled to the exhaust end of a conventional exhaust pipe extending from an internal combustion engine. The valve plate is mounted for swinging about an axis offset from the axis of the exhaust tube. The valve plate is spring-biased to a normal position substantially obstructing the exhaust tube. At high exhaust flow conditions, the valve plate is automatically swung to an open position in which flow through the exhaust tube is essentially unrestricted. Under back pressure conditions, the valve plate swings oppositely but still constitutes a substantial obstruction to exhaust flow. Consequently, the valve automatically opens at high flow conditions and automatically closes at low flow and back pressure conditions for more efficient operation of the internal combustion engine.

Abstract: An installation for generating utilizable energy from potential energy is disclosed. The invention comprises a first swivel plate pivotally mounted within a roadway, a second swivel plate spaced from the roadway, transmission means operatively connecting the first and second swivel plates, and fluid fille containers adapted to be compressed.

Abstract: A hydrostatic rotary power transmission system that provides a stable rotation rate at very slow rotation speeds is provided. The system operates in two speed control modes, one being a normal mode for use in the rotation rate range of 50 rpm to the maximum rated speed and a second or fine speed control mode for use in the rotation range of <1.0 to 250 rpm. In the normal control mode, the rotation speed is a function of the displacement of the hydrostatic pump. In the fine speed control mode, the motor rotation rate is a function of the flow rate through a proportional-flow valve that is downstream of the motor.

Abstract: A hydraulic pressure supply apparatus includes a variable displacement pump which is controlled to change its discharge flow rate and pressure in accordance with a condition of a load side. The pump is communicated with the load side through a conduit to which an accumulator is communicated through a proportional pressure reducing valve controlled so that its regulating pressure is higher than the pressure required in the load side and is lower than a target discharge pressure of the pump. Furthermore, when the pressure in the conduit is lower than the regulating pressure of the valve, the valve is opened and regulates the pressure in the conduit by allowing higher pressure flow from the accumulator.

Abstract: The combination of an intake air supply system with an internal combustion engine having a charge air cooler, a cylinder charging air intake and an exhaust discharge is provided. The intake air supply system includes a Roots-type positive displacement blower having inlet and outlet means and an exhaust gas driven turbo-compressor connected in series with the blower. The intake air supply system further includes a bypass passage connecting the blower inlet and outlet and a valve in the bypass passage to control the flow of fluid through the bypass. The valve is operative to open and close the bypass passage in response to engine operating parameters and to modulate the flow area of the passage in response to the same engine operating parameters so as to infinitely vary the flow area between the open and closed positions of the valve.

Abstract: An apparatus for consistently applying a predetermined centrally located compressive force to an element positioned between a first compressive member and a second compressive member is disclosed. The apparatus includes a bracket which holds compressive members in a clamping relationship about the element. The bracket includes a force generating web, a first leg and a second leg. The bracket is arranged to provide a centrally located compressive force when in the clamped relationship.

Abstract: An expansion engine incorporates various structural features in which all cold seals are stationary, and only warm seals move. Moving parts which are subject to cryogenic temperatures are designed with gas bearings, while tight tolerances and material choices inhibit wear and steady state heat loss. Numerous other features include structural design to relieve stresses, combined fabrication of key parts, initial bias of the inlet and outlet valves which contract on cooldown to desired alignment, and a gas-purged upper seal housing, eliminate various sources of expansion engine failure and heat loss during operation and result in high reliability and thermal efficiency.

Abstract: In this process of the liquid nitrogen/rich liquid HPN swing type, the connection between the head of the column (4) and the liquid nitrogen holding tank (7) is effected, for the two flow directions of the liquid nitrogen, by a single conduit (12) equipped with a pressure reducing device (13). The direction and the flow rate of the liquid nitrogen flow are controlled by the variations of the pressure of the column, and the holding tanks of liquid nitrogen and rich liquid are maintained at constant pressures.

Abstract: The present invention is an improvement to a cryogenic distillation process for the separation of air into its constituent components. The present invention process uses a distillation column system which comprises at least two distillation columns wherein the top of the higher pressure column is in thermal communication with the lower pressure column. The distinctive feature and improvement of the present invention comprise: (a) condensing a portion of the compressed, contaminant-free, feed air by appropriate means, such as against vaporization of liquid oxygen or other source of refrigeration; (b) using at least a portion of this liquid air as impure reflux in one of the distillation columns, and (c) removing a waste vapor stream from a location situated no more than four theoretical stages above the location where the liquid air is fed to the column, such that this waste vapor stream has a nitrogen mole fraction of less than 0.95.

Abstract: The process of the present invention is a cryogenic air separation process with three important features: (1) at least a portion of a nitrogen-rich liquid from the column system is boosted in pressure before being vaporized and delivered as a product; (2) at least a portion of the feed air is at least partially condensed in indirect heat exchange with the boosted pressure, nitrogen-rich stream; and (3) a portion of the liquid nitrogen condensed from the vapor nitrogen from the top of the higher pressure column is returned to the higher pressure column as reflux with the remaining portion being removed from the column system.

Abstract: A tension-compression attachment stage for an electron microscope having a ryogenic heat exchanger is provided. The attachment stage has a support assembly for mounting brackets to support a pair of load screws and a load screw drive assembly and for mounting a fixed jaw. A moveable jaw is supported and moved by the pair of load screws. A cryogenic heat exchanger is soldered to the fixed jaw and slideably engages the moveable jaw through heat conducting slider blocks. The combination allows control of test specimen test within 1.degree.-4.degree.F.

Abstract: A system for the storage or shipment of frozen or chilled biological materials consisting of a cryogenically insulated vessel which contains a heat sink material. The heat sink material is initially chilled to a very low temperature to keep the contents of the vessel cold. The heat sink may include a change of phase to provide extension of the possible shipment or storage time at a relatively constant temperature.

Abstract: The presence of an undesirable quantity of noncondensible gases in a refrigeration unit is inferred as a function of both the vapor pressure and temperature at a selected point in the refrigeration unit where the noncondensible gases tend to gather. Purging of these noncondensible gases, which contaminate the refrigerant, is responsive to a comparison in a programmable controller of the actual vapor pressure measured at the selected point, and the known pressure of uncontaminated refrigerant at the temperature existing at the selected point. On detecting a difference between these pressures that is greater than a desired value, the controller calculates a control output signal needed to purge a volume of contaminated vapor from the unit that is effective for reducing the difference between the measured pressure of contaminated refrigerant and the known pressure of uncontaminated refrigerant to a desired value.

Abstract: A dual compartment single evaporator refrigerator and temperature control apparatus that effectively controls two compartment temperatures by making the evaporator fan control independent of the compressor cycle. The compressor cycle is initiated by the fresh food compartment temperature, runs for a predetermined minimum time, and is terminated by the freezer temperature. The evaporator fan runs with the compressor and is terminated by the freezer control temperature. A small portion of the evaporator air circulation flows through the fresh food compartment and compartment temperatures are balanced according to the freezer temperature settings during the post-compressor cycle fan control. The temperature control set points to operate the compressor and fan are based on algorithms that compensate the control for the combination of freezer and fresh food temperature settings.

Abstract: Disclosed is a pan cooler for a refrigeration unit which has a plurality of pans 22 which hold food removably mounted in the refrigeration unit. There is an opening 20 in the top wall 18 of the unit's cabinet 12 designed to enable the pans to be seated in the opening. Location means seat an individual pan 22 in one of a plurality of predetermined pan positions in the opening, and an individual pan, when in a predetermined pan position, is seated in the opening 20 so that substantially the entire lower body of the pan is disposed within the cooling chamber 16 of cabinet 12. The location means allows an individual pan 22 to be removed from the opening 20 and then reseated in the opening. A plurality of cooling elements 54 are disposed at the opening 20 in close proximity to the pan positions and mounted so that substantially the entire cooling element is disposed within the cooling chamber 16.

Abstract: A heat pump and air conditioning system is provided with a thermal storage device, a variety of distribution devices for blocking or allowing flow of the system working fluid, and a controller for manipulating the distribution devices to control flow of the working fluid through the thermal storage device to allow thermal energy storage or thermal energy discharged depending upon sensed conditions. In addition, a thermal storage device is provided which is suitable for use in a heat pump and air conditioning system. The thermal storage device includes a container through which refrigerant coils pass. The container is filled with an unencapsulated phase change material having a first melt temperature and an encapsulated phase change material having a second melt temperature higher than the first melt temperature. Further disclosed is a method for conditioning a space by use of heat pump and air conditioning systems incorporating thermal storage.

Abstract: A heat pump type air conditioner for an automotive vehicle has a compressor whose outlet is connected to a condenser and a heat-radiating inner heat exchanger through a three-way valve. The heat-radiating inner heat exchanger is connected to an evaporator through an expansion valve. The evaporator is connected to an inlet of the compressor. During a cooling operation, the three-way valve is set to lead the refrigerant from the compressor to the condenser. During a heating operation, the three-way valve is set to lead the refrigerant from the compressor to the heat-radiating inner heat exchanger while bypassing the condenser. A control unit controls such that a cooling efficiency of the condenser is lowered for a predetermined time when the compressor is started. Therefore, the heating operation is securely implemented, and a start-up period in starting is shortened. Furthermore, the freezing of the condenser is avoided.

Abstract: An air conditioning apparatus suitable for an electric powered automobile, where at least one of a heating and a dehumidifying operation is effected by utilizing a refrigerating cycle. An upstream heat exchanger and a downstream heat exchanger are arranged in a duct through which air passes for air conditioning. An outside heat exchanger with an outside fan are further provided, which act as a condenser in a cooling mode, although a refrigerant passes therethrough when using the heating and the dehumidifying modes. Upon use of a dehumidifying mode, the upstream heat exchanger acts as an evaporator, while the downstream heat exchanger acts as a condenser. The temperature of the refrigerant sensed by a temperature sensor at the outlet of the compressor if higher than a predetermined value (110.degree. C.

Abstract: A controller for controlling the capacity of a centrifugal chiller compressor. The compressor is driven by an electric motor and has variable inlet guide vanes that control the flow of refrigerant to the compressor. The controller establishes a dimensionless plot of possible points of compressor operation relating the pressure coefficient and the capacity coefficient of the compressor. The current operating point of the centrifugal compressor is located on the plot and a dynamic surge boundary control curve is positioned proximate a region of actual surge. Control is exercised responsive to the variations of the region of actual surge and the surge boundary control curve for controlling compressor capacity by varying the opening of the inlet guide vanes and varying the speed of the compressor to move the operating point of the compressor proximate the surge boundary control curve.

Abstract: A refrigeration system, and method of operating same, with the refrigeration system having a refrigerant flow path which includes a heat exchanger having an inlet, an outlet, and a refrigerant flow path between the inlet and outlet. The refrigerant enters the inlet in a first predetermined phase and exits the outlet in a second predetermined phase. A first resistance device is disposed in heat exchange relation with the refrigerant in the flow path of the heat exchanger, adjacent to the inlet. A second resistance device is disposed in heat exchange relation with the refrigerant in the flow path of the heat exchanger, at a location between the inlet and outlet where the change in phase from the first phase to the second phase is desired. The first and second resistance devices are connected in a bridge circuit having bridge arms connected between input and output terminals, with a source of potential being connected to the input terminals.

Abstract: A refrigerator is located in a central island or wall of a vehicle. An air duct extends downwardly from the refrigerator through a floor of the vehicle. A fan is installed in the duct to aid air circulation. The fan is controlled by a temperature switch located on a condenser of the refrigerator. Air for cooling the condenser and an absorber are drawn up the duct from outside the vehicle and exhausted outside the vehicle through an upper duct and vent in a roof of the vehicle.

Abstract: The present invention relates to containers cooled by air from a vehicle air conditioning system and more particularly to such containers especially adapted for use in a commercial van utilized for the delivery of perishable foods over considerable distances. In this invention, means are provided internally of such containers to enhance the velocity and to control the direction of the air flow around and over the food contained therein, and to selectively direct and control exhaust air therefrom.

Abstract: A refrigeration device comprising a compressor, a condenser, an evaporator, an accumulator and a refrigerant is described. Lubricating oil present in the compressor is chosen so as to be insoluble with the refrigerant, and a particular accumulator design is described to ensure return of oil back to the compressor.

Abstract: The specification discloses pollution control equipment for pollution generating industrial processes. A containment structure confines pollutants within the structure from which they are removed by cleaning equipment. An absorption refrigeration system removes heat from containment structure for co-generation.