Abstract: A method and apparatus is disclosed for using sub-freezing cold air and hot air generated from a vortex tube to exterminate pests, mildews or tumors. According to the method and apparatus of the present invention, compressed air is fed into vortex tube to generate a stream of cold air with sub-freezing temperature and a stream of hot air of elevated temperature. These jets of cold and hot air are then delivered to infested places to either cool down or heat up to temperatures lethal to undesirable organisms. Since only compressed air is used in operation, there is no adverse impact on the environment.

Abstract: There is provided a novel adjustable clasp for suspending a plant, integrally molded of a semi-rigid polymer material and comprising a pair of arcuate arms hinged together by means of an integral hinge section of reduced thickness which tends to bias apart said arms to an open position of the clasp, which can be closed manually to encircle a portion of the plant, the arms being secured in the closed position by interengaging locking means provided at or adjacent the free ends of the arms, e.g. an integral buckle at the end of one arm capable of irreversibly engaging a plurality of integral retaining teeth provided on the outside of the other arm.

Abstract: A plant support device for supporting plant stems and fencing which includes a support member having serrated rib structures extending the longitudinal length of the support member and hole slots located adjacent to the rib structures which provide a location to attach plant clips or fencing to the support member. An extension member is provided which telescopically inserts into the support member to easily lengthen the plant support device. Various plant clips are provided which attach to the plant support device to support plant stems and fencing.

Abstract: A turnstile provided with an electronic control unit having a photoelectric cell (8, 9) connected therewith, located downstream from the turnstile revolving member (3), in the user walking-through direction, in order to check if the user has actually walked through. Therefore, the turnstile has the ability to detect and issue a signal for, a simulated walking-through attempt performed by a user who actuates turnstile revolving member (3) without actually walking-through said turnstile, and it proves particularly effective for checking the arrival and the presence of personnel at the working posts.

Abstract: A door construction with an improved locking channel assembly has a pair of doors with vertical edges pivotally hinged to a frame and opposing closing edges including an improved interlocking locking channel assembly. The interlocking assembly has first and second elongated locking channel elements lying within the plane of the doors. The locking channel elements extend substantially the height of, and are pivotally attached along respective vertical axis of an associated edge of a door. One locking channel element carries an adjustable elongated tongue. The other elongated locking channel element is adapted to receive the protruding portion of the tongue in interlocking relationship.

Abstract: A support assembly for a sliding door includes an elongated track providing a track portion of generally inverted U-shaped cross section with spaced vertical walls. A wheeled guide rides in this track portion and includes a mounting member and a body member of generally inverted L-shaped configuration. The vertical leg is secured to a door and extends upwardly therefrom; and the horizontal leg extends horizontally above the door. A pair of wheels is rotatably mounted on the horizontal leg for rotation about axes perpendicular to the horizontal leg and their peripheral portions extend beyond the opposite ends of the horizontal portion. The axes of the wheels are oriented on an imaginary line extending at an angle of at least 30.degree. to the central axis of the horizontal leg, and the circumferential portions of the wheels rotatably bear on the vertical walls of the track.

Abstract: An apparatus is provided for polishing the end face of an optical fiber encapsulated within a ferrule portion of a fiber optic connector device which terminates the optical fiber. The end of the optical fiber projects from the ferrule portion. A mounting plate has a forward surface and a receptacle for mounting the connector device, with the end of the optical fiber projecting from the forward surface, to permit the end face to be polished by moving the mounting plate over an appropriate polishing surface. A polishing plate forms a substrate having a recess in a forward surface thereof. A polishing film is adhered to the substrate, spanning the recess, to define an air space beneath the film in the recess.

Abstract: In the construction of a motor driven tool, a bucket-shaped housing having upper and lower parts, a preassembly of a motor support, and a motor assembly including an armature and stator mounted on the support and in coaxial relation to the housing parts, and bearing means for supporting the opposite ends of the armature, respectively, in the motor support and in one said housing part, the armature being fixedly connected to the support and the stator being magnetically retained to the armature.

Abstract: A resilient coupling having a cup-shaped sleeve and an elastomeric pad disposed within the cup-shaped sleeve. A threaded hub is embedded with in the elastomeric pad. The bottom of the hub generally registers with an end of the elastomeric pad which is directly exposed to the atmosphere and is not covered.

Abstract: A lap blank and holder assembly includes a lap blank having two spaced apart flat surfaces separated by a given thickness and formed from a material capable of compressing about a member inserted into it. The holder has a projection extending outwardly from a front face thereof and is inserted into the material making up the lap to secure it against rotational and shifting movement while being cut in a surfacing machine. This arrangement further allows the assembly to be placed as an assembly in a finishing machine for subsequent polishing of a cut lens surface in an off-axis polishing procedure.

Abstract: A water jet cutting apparatus has a line catcher for water and abrasive passing through the worktable comprising a carriage on the frame is movable above a pervious worktable and carries a water jet cutting head. A pan ia supported on the frame and spaced below the worktable, and a collector extends transversely of the frame between the worktable and pan for movement along the length of the worktable in alignment with the cutting head, and has a drain. An insert member is supported in the collector and drains into the collector. A settling tank cooperates with a sludge pump with a conduit from the pan to the settling tank to transport water and abrasive material to the tank. A rinsing pump has a conduit from the settling tank to the collector to draw water from the settling tank and flush abrasive from the collector outwardly of the drain into the pan.

Abstract: An elevationally adjustable folding stage has a frame which folds along a center of the stage from a storage position to a use position. Stage panels of interchangeable widths form a stage surface and are reversible and interchangeable. The stage may also support additional panels between stages extending therefrom to form an extended stage surface. The stage has a roller assembly which lifts the stage up so that rollers engage the floor for rolling between storage and use locations. Connectors between the frame and the stage offer quick connection without additional pieces. Connectors also provide for inserting risers to raise the height of one panel of the stage relative to the other. In addition to the risers, multi-panel supporting bases may be used to support the panels extending from the edges of the stage between stages.

Abstract: A roof pipe entry hatch which includes side walls defining an opening, a cover hinged to one end of the side walls exteriorally of the opening, and a plurality of apertures presented by the side walls for receiving pipes from the exterior of the side walls into the opening, or handling pipes from the interior to the exterior of the building.

Abstract: A flat base for a roof mounted snow guard is provided with a foam filled adhesive strip to facilitate attachment of the snow guard to a smooth metal roof. The adhesive strip preferably has approximately five square inches of bonded area for this purpose and the thickness of the strip is preferably one millimeter at least 0.04 inches.

Abstract: The invention relates to a cavity tray for use in a cavity wall, comprising two spaced apart flanges each adapted in use to lie in or adjacent a respective skin of the wall, a connector connecting the two spaced apart flanges, and an arcuate transitional part leading to at least one flange whereby a super- or sub-posed damp-proof men, her may be adhered thereto with substantially no discontinuity.

Abstract: A building system in which knock-down buildings are shipped in stacked packages. The skids are standard width for loading on an oil field trailer and cooperating with guides on the trailer. The buildings have a greater width dimension than the skid and outriggers extend outwardly from the skid to support stacking plates between stacked skids at spaced points on each side of the building.

Abstract: A wall comprises at least one pair of connecting members, a plurality of bracings, a wall body, and unbonded layers. The connecting members are erected between a pair of beams, and connected to the beams. The connecting members are made of a low-strength steel. The bracings are made of a normal steel. One end of each of the bracings is attached to one of the connecting members and the other end of the bracing is attached to one of the beams. The wall body is made of precast concrete and surrounds the connecting members and the bracings. The wall body is disposed in a space between the beams. Unbonded layers are formed between the wall body and the connecting members so that the connecting members can slide relative to the wall body. However, the bracings are fixed in relation to the wall body.

Abstract: A width-adjustable step tread has first and second members, each extending along at least an appendage of a width of the step tread. Each of the first and second members have identical cross-sectional shapes as defined by a web with two opposing edges. A first appendage extends along one edge of the web defining an exterior surface and a second appendage extends along the other edge of the web defining an interior surface. The interior surface of the second appendage forms a female part which receives a male part formed by the exterior surface of the first appendage so that the first appendage of each member couples in sliding engagement with the second appendage of the other member.

Abstract: A panel which has a central insulating core, usually expanded polystyrene or equivalent material, which core is flanked on one side by a skin laminated to the core, and on the other side by a composite skin such as oriented strand board (OSB) or plywood such as five eighth plywood sheets is disclosed. The oriented strand board is more desirable because of its structure and more importantly its availability in lengths up to forty feet. The joint at the lateral edges is comparable to that of U.S. patent application Ser. No. 513,922 filed Apr. 24, 1990. On one side where there is a protrusion and an interlock with a groove. An extension and recess are provided but the same have a different configuration inasmuch as one has the board substrate is its side portion. In addition, a joiner is provided so that with an overlapping portion of the composite skin on the adjacent laterally disposed panel they will overlap at the middle of the joiner.

Abstract: A slab with two or more adjacent sub-slabs with a space therebetween and a liquid stop spanning the space, a portion of the liquid stop embedded in each of the sub-slabs. In one aspect, when joint material is present in the space, the liquid stop is, preferably, disposed beneath the joint material. A liquid containment system for a treatment facility with liquid containing vessel(s) and slab(s) which includes liquid stop apparatus for each slab/slab interface and liquid stop apparatus for each slab/vessel interface.

Abstract: An insulating insert is disclosed, that fits into the cores of concrete building blocks. The insert is collapsible widthwise, near its ends, and lengthwise to fit both standard and odd-dimensioned cores. In the preferred embodiment, the invention basically comprises: a generally rectangular body with flat top, bottom, front and rear panels; two segmented endwalls; and opposing slots (T-shaped in cross section) that start at the endwalls and extend from the insert's top to bottom. The horizontal portion of each T-slot permits the insert's end portions to be collapsible widthwise to easily accommodate different-shaped cores, even sash blocks; and each vertical portion permits the overall length of the insert to be reduced to fit smaller cores.

Abstract: A plastic gable vent for placement on the wall of a building to provide a louver wherein siding abuts the gable vent comprising a plastic body having a front wall and a peripheral wall circumscribing the front wall. A plurality of integral longitudinally spaced louvers are provided on the front wall. Each louvers includes an inwardly extending apex with side walls, one of which has a slot therein. The plastic body further includes an inner peripheral wall that circumscribes the louvers. A flat sheet is attached on the plastic body and overlies the inwardly extending apices. The screen is opaque and formed with vertically spaced slots when mounted on the inner peripheral wall, opaque portions engage the inner apices of the louvers, and the slots are positioned such that they are spaced transversely from the walls that have the openings therein. A screen overlies the flat sheet.

Abstract: A ceiling frame joint structure comprises a first member and a second member each of which is in the form of an elongated, downward-facing U-shaped channel defined by a top wall and two opposite side walls to receive therein a portion of a bar member which constitutes the ceiling frame. Each of the first and second members comprises a middle section interposed between two opposite end sections and the side walls of the middle sections are removed to form notches which have such a size that the second member is receivable within the notches of the first member in an orthogonal manner to have the top wall thereof crossly overlapped under the top wall of the first member. A fastener penetrates through holes formed on the middle sections of the top walls to secure the two members together. Holes are provided on the side walls of both members to allow nails or screws to penetrate into the bar member received within the channels to secure the bar members within the first and the second members.

Abstract: A sheet metal shingle for horizontal application on a roof beginning at the roof ridge and proceeding downwardly. The shingle has a male portion along its top edge, a female portion adjacent its lower edge and hook portions along both vertical ends. A bead of resilient compressible material is disposed along the male edge of the shingle, and a bead of sealing material is disposed in at least one of the hook portion.

Abstract: A siding positioner/fastener that consists of a strip 40 with a continuous length, with inserts 50 coupled to it, at spaced intervals along the length of the strip. The strips are positioned and coupled to a substrate, aligning the strips perpendicular to the channel 70 length, which is parallel to the siding length, with a strip at each interval along the siding length, and with the inserts inline and parallel across each strip interval. A sloped channel is coupled to the back of the siding length. At each end the channel can slide on, or be pressed onto the inserts. The remaining inserts are pressed on. Each time an insert is locked onto the channel this aligns the following insert. When all the inserts are locked onto the channel, the siding can be moved parallel to the its length, or expand and contract its width. The insert length will allow two pieces of siding to be butted against each other on one insert.

Abstract: The grid member is formed of sheet metal and has an inverted T-shape with a bulb at the top, a double thickness central web and oppositely disposed flanges at the bottom. To achieve controlled expansion, an extended angular lance is cut at the top of the bulb. Further, staggered cutouts are placed in the two thicknesses which make up the web. By staggering the cutout areas of adjacent web layers, the overall web strength is maintained. These web cutouts and the lance at the top of the bulb cooperate upon thermal expansion, causing the bottom flanges to buckle down, and the web and bulb to separate laterally and fold. The folded web configuration directed by the staggered cutout pattern will maintain longitudinal rigidity.

Abstract: A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.

Abstract: An improved breastplate assembly (10) which is adapted for connection with a saddle (12) and serves as a humane training aid to encourage a horse to travel with its head lowered while avoiding injury to the animal in the event of undue upward movement of the horse's head and neck. The breastplate assembly (10) includes a breastplate (14) having a pair of interconnected straps (24, 26) adapted for connection to the saddle (12), together with a depending central strap (16) coupled with the breastplate (14) and extending downwardly for connection with the lower girth strap (22) of saddle (12). The central strap (16) includes an elongated, axially stretchable section (42), which preferably forms the lowermost section of the strap (16). A tiedown strap (18) is secured to the central strap (16) and extends upwardly for coupling with the horse's bridle to provide yieldable, axially stretching of the central strap (16) in response to upward movement of the horse's head.

Abstract: A feeding mechanism for a round hay baler is capable of feeding plastic sheet, netting, or alternatively twine by means of a single set of parallel feed rolls. The device includes a control mechanism which, upon sensing of a full bale having been formed within the baler, initiates a programmed control sequence beginning with driving of one roll for an incremental period of time. The driven roll engage netting, sheet or twine against the second idler roll and feeds the netting, sheet or twine into the bale forming mechanism for wrapping about the bale. Upon completion of the wrapping sequence, a special knife descends and cuts the twine or sheet of netting or plastic. The controller then resets the mechanism.

Abstract: A robot apparatus for a double twister, which can travel along the units of the double twister, is provided with an operating arm for drawing a yarn end from a feed package, a suction arm for drawing a yarn end from a winding package, a yarn hook portion for hooking both the drawn yarn ends, and a piecing device for piecing both the yarn ends at the hook portion. The robot apparatus is operated to enable formation of a full winding package having a predetermined winding amount from a plurality of feed packages without requiring a yarn length counter.

Abstract: A rotary yarn twisting disc which is adapted for imparting twist to an advancing yarn as part of a false twisting process. The disc has an annular yarn contacting peripheral surface which includes a first segment having a relatively high coefficient of friction and a relatively large radius of curvature, and a second segment having a relatively low coefficient of friction and a relatively small radius of curvature.

Abstract: A rotor support shaft for an open-end spinning rotor assembly is disclosed which is equipped on its free end with a supporting element which forms an essentially radially extending supporting surface for a vibrating ball of a step bearing. The supporting element is made of a material, preferably for a ceramic material, which has a higher hardness than steel. The supporting element is arranged in a receiving device concentric with respect to the axis of the shaft in such a manner that the supporting surface projects slightly from the front face of the shaft.

Abstract: A process for the production of power from a carbonaceous fuel comprising partially oxidizing the fuel with oxygen or an oxygen containing gas to yield a combustible gas stream and sensible heat, said sensible heat or a major part thereof being transferred to the power producing unit together with the combustible gas. The power producing unit is a humid air turbine cycle.

Abstract: A system for reducing the formation of NO.sub.x pollutants during the combustion of liquid fuel in a gas turbine engine. The system comprises introducing an externally modulated, rapidly-pulsed, oscillated or sinusoidal fuel flow delivery rate (generically referred to as "modulated") to produce a controlled degree of combustor air input flow oscillation and bulk flow oscillation within the combustor which enhances the fuel-air mixing rate and homogeneity within the combustor, decreases the residence time of transition fuel/air mixtures prone to NO.sub.x formation, and substantially decreases the NO.sub.x concentration in the resulting combustion gas product without creating a net pressure gain throughout the combustion chamber.

Abstract: A gas turbine combustor is capable of reducing NOx over a whole load range of a gas turbine. The combustor comprises two burner systems. It is possible to independently control a flow rate of combustion air supplied to a burner of the respective systems and a flow rate of bypass air jetted from through a bypass air port. The air supplied to the burners is mixed with fuel in a mixing chamber and then ejected into a combustion chamber so as to form a flame. The amount of bypass air is controlled in accordance with an operation load, a humidity of air and a heating value of fuel. It is therefore possible to prevent any blow off and reduce NOx over the whole load range of the gas turbine.

Abstract: A system and method for resisting thermoacoustic oscillations in systems comprised of hot and cold components is disclosed. More particularly, a combined cycle power generation system 32 having a gas turbine 40, a gas turbine discharge duct 34, and a gas turbine recuperator 36 and 38 is disclosed. The system 32 is designed to resist severe thermoacoustic oscillations over its entire load range by providing for an asymmetrical arrangement of the hot section L-l, including the gas discharge duct 34 and the plenum 36 of the recuperator, and the cold section l, including the heat exchange tubes 38 of the recuperator. Also disclosed is a steam generation system 42 having a plenum 46, a burner 48, and a furnace 44. The steam generation system 42 is also designed to resist severe thermoacoustic oscillations by providing for an appropriate burner length L and by providing for an asymmetrical arrangement of a hot burner section L-l and a cold burner section l within the burner 48.

Abstract: A method and assembly are effective for air-starting an aircraft gas turbine engine having a fan powered by a low pressure turbine through a first shaft, and a compressor powered by a high pressure turbine through a second shaft disposed coaxially therewith. A gear train is selectively operatively joined between the first and second shafts by selectively engaging a first clutch for transmitting torque through the first clutch only in one direction from the first shaft to the second shaft when the fan is windmilling for driving the second shaft to allow an air-start of the gas turbine engine during flight. In a preferred embodiment, a second clutch is operatively joined to the gear train and is selectively engageable at speeds of the second shaft below a predetermined release speed, and disengageable at the release speed and above for disconnecting the air-start assembly once the engine has been started.

Abstract: A flight vehicle scramjet combustor. The combustor, in its "2-D" and annular embodiments, has two spaced-apart, generally opposing, and longitudinally extending walls. One wall includes a generally aft-facing step having a first section and an interconnected second section, a forward wall portion attached to the first section, and an aft wall portion attached to the second section. The second section includes a fuel injector discharge orifice having a fuel discharge axis which is aligned generally perpendicular to the second section and which projects both generally towards the other wall and longitudinally aft. The combustor has a cylindrical embodiment which includes a cylindrical wall having a step and fuel injector discharge orifice similar those of the "2-D" and annular combustor embodiments.

Abstract: An exhaust emission control system for a motor vehicle is disposed in an exhaust path, comprises a first catalyst for purifying an exhaust gas during activation of an engine, a second catalyst disposed downstream of the first catalyst and including a lean NOx catalyst, a bypass detouring the first catalyst, a select valve for controlling the amount of exhaust gas to be introduced into the bypass and first catalyst, and a control unit for controlling the select valve and flow of the exhaust gas according to operating status of the engine.

Abstract: An air gap manifold joint construction of an engine exhaust port flange having a plurality of exhaust port orifices, each with an inner orifice wall, a dual wall manifold having a plurality of runners each including an inner tubular liner and an outer tubular jacket, the inner tubular liner being generally spaced from the outer tubular jacket substantially over the length of the inner tubular liner to form an air gap, the inner tubular liner having an inlet end and the outer tubular jacket having an end adjacent to the inner tubular liner inlet end, said inner tubular liner inlet end having a periphery with an outer diameter substantially the same size as the inner diameter of the outer tubular jacket end and in peripheral engagement therewith, an adapter sleeve having first and second ends, the first end having an outer diameter substantially the same size as the diameter of the inner orifice wall of the exhaust port flange port orifice, and the second end having an outer diameter substantially the same size

Abstract: A lock valve for marine hydraulic steering systems includes a valve body with a spool valve reciprocatingly received in a bore therein. A first port and a second port of the valve are connected to a manual pump. A third port and fourth port are connected to a double acting hydraulic cylinder connected to a rudder or steerable motor. There are valves within the lock valve which normally prevent fluid flowing between the ports so the steering system remains in a fixed position when the helm is released. Fluid can flow from the first port to the third port when the first port is pressurized. A return flow of fluid from the fourth port to the second port is permitted only when the first port is pressurized. When the second port is pressurized, fluid can flow the second port to the fourth port. A return flow of fluid from the third port to the first port is permitted only when the second port is pressurized.

Abstract: A water pressurizing unit for generating high pressure water by utilizing the water weight changes caused by the presence of a wave crest or wave trough directly above the apparatus. The apparatus is positioned under the surface of a body of water having waves and has a plunger having a flat disk at its upper end. The plunger moves vertically with respect to a rigidly mounted cylinder, which defines a fluid chamber having a cross sectional area less than the surface area of the flat disk. A conduit, in fluid communication with the fluid chamber, conducts water from the body of water to the fluid chamber and pressurized water to a collection tank. Inlet and outlet check valves insure that fluid does not flow from the collection tank to the fluid chamber, or from the fluid chamber to the water source. Preferably, a plurality of such units are arranged hydraulically in parallel with one another. In this embodiment, a single collection tank collects pressurized fluid from the individual units.

Abstract: An inlet union for master cylinder of the present invention is so constructed that a flange portion is disposed at the periphery of a duct member, a circular raised portion whose outside diameter is smaller than that of the flange portion is integrally formed, at least one convex portion protruding radially is disposed at the outer periphery of the circular raised portion, attaching holes for the duct members are disposed in the top plate of an attaching cover, a plurality of concave portions corresponding to the convex portion of circular raised portion of the flange portion are disposed at the inner periphery of the attaching hole so that the convex portion of the duct member selectively engages with the concave portion of the attaching cover, and a mounting portion is formed at the inner periphery of the attaching cover to mount the outer periphery of the flange portion.

Abstract: The present invention is directed to an augmented thermal bus. In the present design a plurality of thermo-electric heat pumps are used to couple a source plate to a sink plate. Each heat pump is individually controlled by a model based controller. The controller coordinates the heat pumps to maintain isothermality in the source.

Abstract: Air separation by low temperature liquefaction and fractionation wherein feed air is compressed and cooled and supplied to a single stage air separation column from which gaseous nitrogen is removed frown the top and wherein an oxygen-rich liquid is removed from the bottom. The column contains solid material providing solid surfaces on which mass and energy transfer takes place to effect fractionation over a substantial vertical height in the single stage of the column. Liquid is removed from the column intermediate that height, and the removed liquid is subcooled and expanded to produce a gas and a liquid. The liquid is an ultra-high purity nitrogen product, and can be withdrawn from the cycle in liquid or vapor phase. Vapor is removed from the top of the column, cooled and partially condensed and phase separated. Vapor from the last-mentioned phase separation is discharged, thereby to eliminate from the cycle most of the impurities boiling lower than nitrogen.

Abstract: The present invention is an integrated computer module that has a chip carrier assembly attached to a cryogenic cooler. The carrier assembly includes a multichip that has a CPU comprising a plurality of high speed chips. The carrier also has a plurality of external pins that allow the chips to be coupled to an external device. Attached to the carrier is a vacuum-sealed enclosure constructed to eliminate moisture condensation on the pins, and minimize the heat flow from the ambient to the coldplate of the cooler. The vacuum-sealed enclosure is connected to the coldplate with springs to ensure good thermal contact between the cooler and the carrier assembly. The refrigerator runs on a Stirling cycle and contains pressurized helium as the cooling fluid. The coldplate temperature can be maintained at a constant temperature as low as -60.degree. C. while removing 40 watts of active heat load generated by the CPU.

Abstract: An apparatus for simultaneously producing both high and low purity oxygen, which contains a double rectification column having therein a lower pressure fractionating column with two reboilers therein, and a higher pressure fractionating column, wherein an intermediate outlet is provided between the two reboilers of the lower pressure fractionating column for extracting a lower purity oxygen stream therefrom, and a high purity liquid oxygen stream from a bottom portion of the column simultaneously.

Abstract: A dispensing system and method for moving a confectionery mixture having a predetermined ratio of air to fluid to a freezing cylinder comprises a multiple portion tube containing the confectionery mixture, an air meter for controlling the ratio of air to fluid in the mixture, and a peristaltic pump for pumping the confectionery mixture through the tube. The peristaltic pump is positioned between a reservoir and the freezing cylinder and the tube is routed through the pump to form a generally U-shaped trough. When the pump is idle, some of the confectionery mixture settles in the generally U-shaped tube to form a liquid which prevents air from back flowing from a pressure side to a suction side of the pump. Accordingly, the consistency of the confectionery product is maintained when the pump is idle. The peristaltic pump also includes a proximity switch which prevents the pump from operating until all of its movable parts are properly secured.

Abstract: An air conditioning apparatus for an automotive vehicle comprises: a compressor (101) driven by an engine (101) for compressing a refrigerant; an evaporator (103) for evaporating the refrigerant compressed by the compressor; engine speed commanding section (104) for outputting a first command signal to drive the engine at a first engine idle speed when the compressor is not actuated and outputting a second command signal to drive the engine at a second engine idle speed higher than the first engine idle speed when the compressor is actuated; an after-evaporator temperature sensor (105) for detecting air temperature Immediately after the evaporator; an external air temperature sensor (106) for detecting external air temperature; and an inhibiting section (107) for inhibiting the engine speed commanding section from outputting the second command signal, when after-evaporator temperature is lower than a predetermined temperature and further external air temperature is lower than another predetermined temperature

Abstract: A cryogenic unit for the separation of gases includes at least one distillation column (1) is preassembled in the factory. The column (1) with added tubing elements (2) constitutes a pre-equipped subassembly which is transported and installed at the worksite. The tubing elements are disposed so as to be inscribed in at least one elongated volume (3; 3.sub.1, 3.sub.2) lateral to the column and of reduced section. The subassembly (1,2) is disposed on at least one transport cradle (4, 4') and transported to the worksite on the cradle and mounted at the worksite in a cold box (10) Preferably, all the tubing elements are disposed in the cradle. The subassembly, with or without the cradle, is mounted adjacent one side wall of the cold box (10) and is spaced by insulation (13) from at least one liquid gas reservoir (11; 12) also in the cold box (10).