Abstract: A composite roof structure, and a corresponding method of fabricating the structure, are disclosed which includes use of a layer of non-cellular adhesive material (preferably a two-component non-cellular polyurea polyurethane adhesive material), roof insulation panels, along with a flexible roof membrane, preferably made of thermoplastic olefin rubber, including a rubber-like sheet having a fleece-like matting secured to the underside thereof. The non-cellular adhesive is preferably sprayed onto a roof substrate and prior to complete solidification thereof the roof membrane or roof insulation is pressed into the adhesive so that the matting becomes embedded therein.

Abstract: A mould for producing reverse building modules includes a lower horizontal bottom from which longitudinal walls and cross walls are emerging. The cross walls are provided with protrusions inside which respective bars are arranged where the ends of longitudinal rods are disposed defining the framework module. Between each protrusion of the cross walls a spring is provided disposed outside the bars and which ends act on the corresponding ends of the longitudinal bars maintaining the distance therebetween.

Abstract: A laminated decorated board which can give a solid and luxurious feel by laminating a plurality of plate materials, without increasing weight. Plate materials 1 and 2 for constructing a headboard A as a decorated board are laminated to each other. A plurality of sinks 5 are densely formed on an inside surface of the plate material 1, except a peripheral edge thereof. Thus, thin board portions 6 are partially formed by the sinks 5, thereby enabling the thick and solid headboard A to be lightened.

Abstract: A decorative wood surface system having permanent decorative marking wherein the marking is made with a decorative strip inserted between pieces of interlocking wood surface such that the decorative strip conforms to the interlocking pieces and engages with them. Typically, the interlocking wood surface system is tongue and groove hardwood, and the decorative strip is a brass, steel, aluminum, plastic or resin strip adapted such that is conforms to the tongue and groove, and engages with it to provide a permanent decorative wood surface.

Abstract: Panel elements are provided comprising several interconnecting panel elements of the same type. The panel elements comprise a groove formed by an upper groove cheek and a lower groove cheek and a tongue. The tongue comprises a rib oriented in a longitudinal direction of the tongue, and the groove comprises a retaining channel for receiving the rib of an adjoining panel element. The tongue cooperates with the groove of an adjoining same-type panel element such that the two panel elements, when married, are safeguarded against parting forces acting in both axis oriented perpendicular to the side of the two panel elements.

Abstract: New and improved interlocking sidewalk block system. The system incorporates a plurality of rectangular sidewalk blocks each having parallel top and bottom surfaces, parallel left length and right length side surfaces and parallel first end width and second end width surfaces. The first end width and second end width surfaces having a continuous channel running along the full width, said continuous channels being formed with lips at the first end width and second end width surfaces that create an internal height that is greater than the height at the surfaces. The system includes a plurality of couplers that are sized and shaped to have a cross section that fits simultaneously within two continuous channels when two sidewalk blocks are placed with a first end width surface of one block abutting the second end width surface of the second block and sliding a coupler into the continuous channels.

Abstract: A deflection clip comprising a planar base plate comprising a first surface and an opposing second surface, and a guide depending from the base plate. The guide comprises a first arm extending along a longitudinal axis substantially transverse to the base plate from a proximal end adjacent the second surface. The guide further comprises a second arm extending away from the base plate oriented in the same direction as the first arm defining a channel between the arms.

Abstract: Reinforcement arrangement for a pole including abase flange surrounding a bottom of the pole, elongate tubes connected to the base flange and arranged at discrete locations around a circumference of the pole to extend vertically alongside the pole and annular clamping collars arranged around the pole at different vertical locations. The tubes are attached to the clamping collars to thereby form a skeletal framework around the pole which provides increased load-bearing capability to the pole and enables installation of additional antennas on the pole. The base flange is supported above the base plate by gussets which are welded to the base plate and pole. The clamping collars are each formed from several collar segments, each extending partially around the circumference of the pole with adjacent collar segments being attached to one another.

Abstract: A woodpile connector has a tubular body defined by an open-end lower portion and an open-end upper portion. The upper portion and the lower portion are fixedly connected, at their free ends, to a separating plate, which forms a transverse flange extending outwardly from an exterior periphery of the connector body. The open ends of the connector body have beveled edges to facilitate engagement of the connector portions with abutting sections of the woodpile. By aligning the connector portions in relation to the pile sections, while forcing the connector portions into the pile sections, alignment of the pile sections is achieved even when the pile sections do not have evenly cut connecting surfaces.

Abstract: A rail profile is provided with two connection zones (1) situated opposite to each other and having an essentially C-shaped cross-section and a rear wall (4) with an essentially V-shaped cross-section. The structural height (a) of the rail profile is minimal because of the rear wall (4) design and consequently the handling of the rail profile is enhanced.

Abstract: A column comprising courses of building blocks such as bricks is arranged with the long axis of each block parallel to the axis of the column and filled with a substrate such as concrete with an axial structural member. The column may be produced with the aid of a cage including spaced apart hoops or rings used to position blocks during column construction. The cage includes indenters for offsetting some of the blocks in order to form aesthetically pleasing grooving along the finished column.

Abstract: The present invention provides a vacuum heat-insulating block including a honeycomb core, wherein the block structure prevents the honeycomb core having a low bulk specific gravity from collapsing by atmospheric pressure, the block attaining flexibility and sound absorption property. The vacuum heat-insulating block 100 according to the present invention is basically composed of a core utilizing a plurality of layered honeycomb members 50 (formed by bonding a honeycomb core member 51 to a support plate 55) and covering the core with a cover member 70. Moreover, a woven or non-woven fabric 60 having air permeability is disposed between the layers of honeycomb core members 51.

Abstract: A defective capsule removing mechanism is provided wherein a defective capsule discharging window is provided for a capsule pocket and the capsule pocket, is subject to suction through the discharging window so that a cap or a body of a coupling defective capsule is drawn into the defective capsule discharging window in a rolling manner from one end side directed forwardly and then discharged to the outside of the capsule pocket.

Abstract: Glue nozzles (14) are used for the purpose of transferring glue to packs (10). Said glue nozzles can be moved by a pivot arm (18) into a maintenance position, in which the glue nozzle (14) is located alternatively above a collecting container (24) for portions of glue or above a water container (25). The water container (25) is assigned a rotatable roller (22) which is made of elastic material, in particular foam, and assumes the function of a cleaning and closure element for the glue nozzle (14).

Abstract: A packaging machine for packaging an article having a lateral side along which a sealing line is formed by heat sealing operation is disclosed. The packaging machine includes a machine frame having transversely-extending rails on which a conveyor for carrying the article and a package film for packaging the article is movably supported whereby the conveyor and thus the article and the package film are transversely position-adjustable. A side sealing device includes a film forwarding device for synchronously moving the package film with the article in a longitudinal direction. A position-adjusting device comprises a support structure attached to the conveyor to be transversely position-adjustable. A movable chassis is movably coupled to the support structure by means of a screw rod whereby rotation of the screw rod moves the chassis with respect to the support structure in a vertical direction.

Abstract: A packaging system includes a conveyor belt having a carrying surface for carrying an article to be packaged by a package film and an end sealing device including spaced upper and lower sealing blocks between which the article passes. A recessed chamber is formed in the carrying surface by extending the conveyor belt around specially arranged rollers. The end sealing device includes a machine frame slidably supported on rails. A driving system includes a motor and a reciprocating mechanism having an adjustable stroke coupling the machine frame to the motor. The rollers of the recessed chamber are attached to the machine frame to be movable therewith. The upper and lower sealing blocks are movably supported on the machine frame by upright posts with the lower sealing block accommodated in the chamber of the conveyor. Racks extend from the upper and lower sealing blocks with a toothed wheel matingly interposed therebetween for mechanically coupling the sealing blocks together.

Abstract: A system for sealing a load with film, where the load is placed on a pallet, includes a frame and a vertically moveable platform on which the pallet is received. A clamp is mounted to the frame and is configured to engage the load independently of the pallet when the pallet is received on the platform. A rack is mounted to the frame so as to be vertically movable, and a pair of cross members are mounted to the rack so as to be horizontally movable. An engagement subsystem configured to engage sides of the film and a sealing subsystem configured to seal the film are mounted to the cross members. In operation, when the pallet is placed on the platform, the sides of the film, which in the form of a sleeve where the sides define an inner space when separated, are engaged with the engagement subsystem when the rack is in the upper position. Thereafter, the cross members move outwardly to separate the sides of film and to define the inner space.

Abstract: A cartoner assembly comprises a loader and an indexer. The loader comprises at least one horizontally extending drive belt, an input end and an output end. The drive belt is adapted to support one or more packages as they are moved from the input end to the output end. The indexer is positioned adjacent the output end of the loader and comprises a plurality of moveable support members defining in part a plurality of loading stations. The support members are adapted to support a carton at each of the loading stations and are moveable such that the plurality of loading stations are successively aligned with the drive belt of the loader at the output end of said loader. Preferably, the support members are vertically, intermittently moveable. In one preferred embodiment, the indexer includes an output end positioned adjacent a continuously moving conveyor. A method of inserting a package into a carton is also provided.

Abstract: In order to handle bag configurations having extra layers in some portions, especially where thicker materials are used, the facings of the sealing jaws are relieved in the area of the extra layers, so that even pressure is applied to the material across the entire seal area. An improved transverse seal is obtained using this method.

Abstract: A method and device are disclosed for forming and filling tubes containing a product, with the filling process taking place from the longer side of the tube, rather than the shorter side. An elongated product delivery tube contains product diverters that evenly spread out the product, allowing a clean seal in less time. An optional vibrator helps the product to settle quickly. Throughput is increased over the prior art, as well as facilitating improvements in opening the tube and in marketing.

Abstract: A plastic film bag assembly includes a bag having front and back walls joined together and defining an opening leading to a cavity. A header portion extends from the back wall for supporting the bag on a structure. A severance line extends across the header and includes tear sections extending inwardly from each of the header side edges. The severance line also includes support sections adjacent and inwardly of the tear sections. The support sections have a strength per unit length of severance line which is greater than the tear sections strength per unit length of severance line whereby, when severing the bag away from the header, a greater force is required for severing along the severance line support sections than the force required for severing along the tear sections. In use, the bag front wall lip is grasped and pulled away from the header for separating complementary profiles and opening the bag. The header tear sections are severed until reaching the support sections.

Abstract: An article packaging device for packaging articles within a tubular sheet. The article to be packaged is inserted into and enclosed within a length of tubular sheet, and separated from the remaining length of tubular sheet and the device to form the closed individually packaged article. The packaging device is designed to be portable, convenient, lightweight and easily maintained. A thermoplastic, vapor-impermeable tubular sheet having adhesive on one surface can provide an airtight seal that is especially effective when the device is used to package waste-containing disposable adsorbent articles, such as soiled diapers, for disposal. An apparatus for forming the tubular sheet into a layered pack of pleats having an adhesive material positioned on at least one surface.

Abstract: In a method and apparatus for inserting empty bags into retainers, guide members are caused to approach both side edges of each supplied bag so that the vertically oriented guide grooves of the guide members contacted the side edges of the bag, thus positioning the bag in a position that is vertically aligned with a retainer. The bag mouth is opened by suction disks, and a plug is brought into the opened bag mouth. Then, the plug is lowered toward the retainer, so that both side edges of the bag is inserted into the insertion grooves of the retainer. After this insertion, a compressed gas is jetted out of a discharge opening at the tip end of the plug into the bag, so that the bag is spread open to the bottom thereof.

Abstract: A slicing machine has a main housing having a horizontal conveyor surface and a subassembly in the main housing for cutting slices from a foodstuff and depositing them on the conveyor surface. A supply housing immediately upstream of the main housing carries a supply roll of flexible strip and mechanism for feeding the flexible strip downstream toward the main housing. A cutter on the supply housing can sever a sheet from a leading end of the flexible strip. A gripper above the surface is displaceable between an upstream and downstream positions of the surface. The gripper is closable to grip and openable to release the leading end of the flexible strip so as it moves into its downstream positions it pulls the strip downstream above the surface and, once the cutter has operated, the gripper opens to drop the sheet severed from the strip down onto the surface.

Abstract: A device for feeding a package receiver and includes a crank arm pivotal or rotatable about a first axis by a first motor. A second axis is provided at the distal end of the crank arm, whereat the second axis supports the package receiver for pivotal or rotatable movement relative to the crank arm. A second motor is provided for the purpose of pivoting or rotating the package receiver about the crank arm. The two motors are separately controlled. Such a device can be fed with packages selectively from one side or from above.

Abstract: A bowl-cartridge filter includes a filter cartridge and a bowl. The filter cartridge includes an interlock arrangement that is oriented to engage the filter bowl, when the filter cartridge is mounted in the filter bowl, and the bowl is rotated in a direction to remove the bowl-cartridge filter from a filter head. The filter bowl includes a cooperating interlock arrangement that engages the interlock arrangement on the filter cartridge. Example embodiments include cog arrangements, which include a plurality of projecting teeth. Various shapes for the teeth are possible, including house-shaped, truncated A-shaped, and pie wedged shape.

Abstract: The invention teaches a diesel fuel filter containing a smoke suppressant, and a method of suppressing smoke in exhaust from a diesel engine. The smoke suppressant is adsorbed onto a strip (3) of polyester sponge or mesh. Six to eight strips (3) are inserted in the gaps between the folds of a pleat of filter paper (2), equidistantly around a round container or canister (1), which houses the filter paper (2). The smoke suppressant is slowly released to a stream of diesel fuel flowing through the filter into the diesel engine for subsequent combustion. The additive-coated strips (3) are designed to last the working life of a diesel fuel filter. There are several embodiments of the invention, depending on the sizes or requirements of diesel engines.

Abstract: The primary feature of the invention is a nozzle end which extends downward through a hole in the deck of a rotary mower and has a plurality of orifices, some of which are parallel to the deck and some are angled downward at an angle in a range of 1° to 45°. The orifices are radial from the axis of the nozzle end. The cleaning is done by supplying water to the orifices at household pressure while the mower is running at mowing speed. The nozzle having the nozzle end may be installed in the deck or manually held in place during use.

Abstract: An article retrieving device for gathering and storing nuts that allows the user to maintain an erect posture during use, comprises a retaining element and a housing. The retaining element is adapted to retrieve nuts from the ground and includes a plurality of resilient pieces arranged in rows on a sleeve. The retrieved nuts are stored in the housing and dispensed from the housing via a dispensing opening.

Abstract: A method for restoring the operation of a twist apparatus which imparts a prescribed twist to a yarn following a break in the yarn as it travels between a twist spindle of the twist apparatus and a wind-up package of the twist apparatus includes drawing off a twist yarn end from the wind-up package, securing it at a fixed securement point with a portion thereof having an intact twist turn, and cutting the drawn off twist yarn end. The twist yarn end from the wind-up package with the spin yarn end of the yarn from the twist spindle are then knotted or spliced to one another. Thereafter, the re-commencing of the operation of the wind-up package is effected with a delay relative to the re-commencing of the twist spindle operation such that the prescribed twist has propagated through the knotting or splicing location to the fixed securement point.

Abstract: A thruster device and associated methods are provided. The thruster device comprises a frustoconical inner layer and a frustoconical outer layer that surrounds the inner layer such that the inner and outer layers cooperate to define a spiral flow passage therebetween. An outlet, such as a nozzle, is attached to an exit end of the thruster device such that the outlet is in fluid communication with the spiral flow passage. In one embodiment, the thruster device includes an end flow cap that is also attached to the exit end and establishes the fluid communication between the spiral flow passage and the outlet. The end flow cap includes at least one channel for directing the propellant from the spiral flow passage to the outlet. The design of the thruster device allows the frustoconical inner and outer layers to be assembled without galling or damaging the spiral flow passage.

Abstract: Various joints within a duct assembly to allow relative movement between portions of a fluid system which are interconnected by this duct assembly are disclosed. This duct assembly is particularly suited for interconnecting a rocket fuel tank and rocket engine of a space travel vehicle. In any case, this duct assembly includes a pair of duct suctions, each of which includes a gimbal on an end thereof. The opposite ends of these two duct sections are disposed in a telescope-like arrangement with a slip joint therebetween to allow the duct sections to move at least generally axially relative to each other. This slip joint includes a pair of longitudinally spaced bushings, between which are disposed a plurality of annular seals. The bushings inhibit contain between the two duct sections by maintaining the same in spaced relation.

Abstract: An exhaust gas purification device in a vehicle, wherein a reforming reactor is provided for extraction of hydrogen from fuel and the hydrogen is supplied to an exhaust gas stream of an internal combustion engine upstream of the exhaust gas catalytic converter, wherein the reforming reactor includes a supply device for oxygen and/or water, wherein the reforming reactor is connected with a side branch of the exhaust gas conduit and wherein oxygen and water for reforming are supplied in the form of an exhaust gas partial stream via the side branch.

Abstract: An exhaust gas purification apparatus, for an engine (1) having a combustion chamber (5), comprising an exhaust passage (10), a particulate filter arranged in the exhaust passage for removing particulate in exhaust gas exhausted from the combustion chamber by oxidation, and a device (30) for controlling the characteristics of the exhaust gas flowing into the particulate filter, wherein, when the judging means judges that the particulate filter will the characteristics of the exhaust gas flowing into the particulate filter to prevent the particulate filter from being deteriorated by heat.

Abstract: An exhaust gases purification device for internal combustion engines, of the kind that includes a duct which channels gases from the engine exhaust manifold, and injects them into the device, characterized by comprising a quiet chamber (wherein gases expand), then a first standard filter, a buffer plate, then a second filter, and then a centralizer-diffuser assembly where the gas flow is contacted with two external cold air drafts and part of the polluting gases are channeled into a turbulent chamber, from which they are fed into the engine as intake gases, the remaining flow being discharged into an tube ending in a atomizer, and from there into an exhaust tube; said turbulent chamber comprising an engine port portion that discharges into fixed buckets, where gases are expanded and channeled into the atomizer that comprises a gas recovery outlet back into the engine.

Abstract: Distributing valves of a swash plate type hydraulic drive transmission can make a cylinder block smaller and reduce the number of processes and the number of parts. Distributing valves alternately switch, corresponding to the axial reciprocating motion of plungers, communication and cutoff between communication passages communicated to oil chambers opening to the inner surface of cylinder holes and low pressure ports and high pressure ports communicated to a low pressure oil passage and a high pressure oil passage opening to the inner surface of the cylinder holes.

Abstract: A multi-dimensional, micro-electromechanical assembly and the method of fabricating same. The invention enables an assembly of three-dimensional (3D) microelectromechanical systems (MEMS) using surface tension or shrinkage self assembly. That is, the invention provides a surface tension self assembly technique for rotating a MEMS element with a controlled amount of deformation to a selected angle out of the plane of a substrate. In accordance with the inventive method, multi-dimensional, micro-electromechanical assemblies are fabricated by providing a phase change material on at least one substantially planar structure mounted in a first orientation. A phase change is induced in the phase change material whereby the phase change material changes from a first state, in which the structure is disposed in the first orientation, to a second state, in which the structure is disposed in a second orientation. The MEMS elements may be fabricated using conventional surface micromachining techniques.

Abstract: A fresh air amount of an engine (1) is controlled by a variable nozzle (53) of a turbocharger (50). A controller (41) calculates an open loop control value of a drive signal of a variable nozzle (53) based on the running state of the engine (1). A target intake fresh air amount of the engine (1) is calculated based on the running state, and a processing value obtained by smoothing the target intake fresh air amount value is calculated (S132). A feedback control value of the drive signal is calculated so that a real intake fresh air amount coincides with the processing value (S367). The variable nozzle (53) is controlled based on the open loop value and feedback control value. By using the processing value as the target value of the feedback control, unstable factors in feedback control resulting from the time delay from operation of the variable nozzle (53) to change of the intake fresh air amount aspirated by the engine (1), are eliminated.

Abstract: Two theories:

Abstract: A combustor for a gas turbine engine includes a plurality of igniter tubes that facilitate reducing temperature gradients within the combustor in a cost effective and reliable manner. The combustor includes an annular outer liner that includes a plurality of openings sized to receive igniter tubes. Each igniter tube maintains an alignment of each igniter received therein, and includes an air impingement device that extends radially outward from the igniter tube. During operation, airflow contacting the air impingement device is channeled radially inward for impingement cooling of the igniter tubes and the combustor outer liner.

Abstract: In a thermal turbomachine with a housing (80), a combustion chamber (30), an ignition device (10), a fuel supply (60), and an air supply (70), in which the ignition device (10) consists of an ignition space (50) and an igniter (51) arranged in the ignition space (50); in which the fuel supply (60) and the air supply (70) open into the ignition space (50); and in which the ignition space (50) is connected to the combustion chamber (30), the ignition device (10) is arranged outside the housing (80) of the thermal turbomachine. The invention also relates to a process for the ignition of the thermal turbomachine outside the housing (80).

Abstract: A method and a system is provided for reducing aircraft engine fuel consumption by selectively closing an aircraft surge bleed valve (SBV), when the surge bleed valve would normally be open. The method determines whether the engine bleed flow obtained with the closed SBV is sufficient to prevent engine surge for the present flight regime. If so, the SBV is kept closed, while the aircraft is drawing air from the engine.

Abstract: An indirect thermoelectric cooling device comprises a thermoelectric cooling plate, in the indirect thermoelectric cooling device, a heat dispersing member is connected to the hot end of the thermoelectric cooling plate, and a cooling transmitting member is connected to the cold end of the thermoelectric cooling plate, characterized in that an inside mid-frame is provided between the heat dispersing member and cooling transmitting member, an outside mid-frame which is of a shape of sleeve is provided to surround the inside mid-frame, and the thermoelectric cooling plate is sandwiched between the inside mid-frame and the outside mid-frame. According to the present invention, there exist less connecting portions in the route of the cold or hot gas transferring, thus decreasing the heat resistant, and increasing the cooling or heating transmit efficiency, so that the heat dispersing and the cooling transmitting can be both realized in the same device.

Abstract: A natural gas handling system is provided having a new modular design to provide clean and accessible fuel for remote compressed natural gas. The natural gas handling system has a storage unit with a heated exchanger that converts the liquefied natural gas to compressed natural gas having a predetermined pressure of approximately 5000 psig without the use of pumps or compressors. The LNG/CNG storage unit has an outlet for providing warmed natural gas at approximately psig. If desired, refrigeration can be supplied from the −260° F. LNG during the vaporization process. The LNG/CNG storage unit also has a second outlet with a pressure regulator for providing warmed compressed natural gas at approximately 60 psig.

Abstract: A cooling fluid system is disclosed for providing cryogenic cooling fluid to a high temperature super-conducting rotor comprising: a cryogen storage tank storing a liquid cryogenic cooling fluid; an inlet transfer line connecting the storage tank to the rotor and forming a passage for liquid cooling fluid to pass from the tank to the rotor, wherein said storage tank is elevated above the rotor and the liquid cooling fluid is gravity fed to the rotor.

Abstract: A refrigeration/air conditioning system includes a compressor having a motor protector which stops the compressor's motor when it senses an out of specification condition. A diagnostic system of the refrigeration/air conditioning system monitors the status of the motor protector. The diagnostic system includes logic circuitry that diagnoses the type of problem the compressor or the system is having based upon the running times and status of the motor in conjunction with the times and status of the tripped motor protector. The diagnostic system also includes either a discharge pressure sensor or a condenser temperature sensor, an ambient air sensor and a voltage sensor. The sensors provide information to the diagnostic system which enables it to determine where a system fault has occurred.

Abstract: The present invention relates to an air circulation system of a refrigerator in a side-by-side refrigerator. The air circulation system ejects a cold air into a refrigerator compartment asymmetrically from right and left side walls to form a vortex thereby enhancing the ability of uniform cooling.

Abstract: A two stage reciprocating compressor and associated HVAC systems and methods are disclosed. The reciprocating compressor includes a crankshaft having an eccentric crankpin, a reversible motor for rotating the crankshaft in a forward and a reverse direction, and an eccentric, two position cam rotatably mounted over the crankpin. The crankshaft and cam combine to cause the piston to have a first stroke when the motor operates in the forward direction and a second stroke when the motor operates in the reverse direction. The cam and crankpin also include stabilization means to restrict the relative rotation of the cam about the crankpin. A lubrication system is provided to lubricate the engaging surfaces of the crankshaft and cam and between the cam and the bearing surface of the connecting rod. There is also provided a control for selectively operating the motor either in the forward direction at a first power load or in the reverse direction at a reduced second power load.

Abstract: The present invention relates to a device and method for operating a refrigeration cycle without icing of the evaporator component of the device.

Abstract: A combined refrigerator-oven apparatus (20) includes an enclosed chamber (28) having a top wall (22), a bottom wall (24), and vertical side walls (26). The bottom wall (24) has an airflow inlet opening (54). An airflow inlet gate (58) removably blocks the airflow inlet opening (54). A heating unit (50) is positioned in the enclosed chamber (28) and a refrigeration unit (70) is positioned outside of the enclosed chamber (28). The refrigeration unit (70) has a cool air duct (80) coupled to the airflow inlet opening (54). A controller (118) is in communication with each of the gate (58), the heating unit (50), and the refrigeration unit (70). When a cooling mode is selected, the controller (118) actuates the airflow inlet gate (58) to unblock the airflow inlet opening (54). The controller (118) further activates the refrigeration unit (70) to deliver cool air (62) into the enclosed chamber (28).