Abstract: A door set complete with side jambs, head, and a sill, by means of which the door can be assembled to be either a left-hinged door or a right-hinged door by the use of insertion hinges and a reversible lock, and where the frame joints are dowel joints. The door set makes it possible to assemble, with a minimum number of standard parts, both left-hinged doors and right-hinged doors as well as doors with or without a sill.

Abstract: A blade holder for a louvre window comprises an elongated member having a longitudinally groove for retaining an end edge of a louvre blade, a rebate of cruciform cross-section formed in that surface of the elongated member which is disposed adjacent the surface of a window frame on which the blade holder is pivotally mounted, and a drive plate for pivotally mounting the elongated member on the window frame, the drive plate comprising a main body and a boss separated by a bearing portion, the bearing portion being in rotational engagement within an aperture in the window frame, and the boss having a cruciform cross-section so that it has a driving engagement with the rebate in the elongated member. Two hardened steel pins are mounted on the driving plate to extend axially through the boss to prevent removal of the louvre by sawing through the boss.

Abstract: In a double sliding automobile window, a sealing structure is provided between two sliding window glass panels. The sealing structure includes a sealing strip extending vertically between and secured to the upper and lower run channels and having a pair of sealing lips adapted to engage respectively the window glass panels.

Abstract: A rectangular window frame defined by four frame members, has two spline members supported by a pair of laterally spaced frame members. The spline members are formed with blade portions arranged to retain a sash in the window frame. One on both of the spline members are longitudinally slidable in a tubular frame portion against a spring bias and each is normally retained at one end in a socket formed in an adjacent frame member. The spring bias is provided by a coil spring in the tubular frame portion bearing against the other end of the spline member. When the spline member is disengaged from the pocket it is rotatable out of the way to permit the sash to be installed in or removed from the window frame. The blade portion of each longitudinally slidable spline member may be formed with an aperture or slot to receive a tool for longitudinally sliding the spline member to disengage it from the retaining socket.

Abstract: A multiple spindle honing machine of the disclosure includes automatically controlled feed cylinders for initially expanding honing tools driven by the spindles and also includes a constant rate feed mechanism that continues to expand the tools after the initial expansion actuated by the feed cylinders. Each spindle includes a connector that extends between one of the feed cylinders and its associated honing tool. Mechanical locks respectively lock first threaded members of the connectors after the initial tool expansion. Second threaded members of the connectors are unthreaded from the first members thereof by an actuating member, preferably embodied by the gear rack, of the constant rate feed mechanism so as to continue the tool expansion and completion of honing operation. Electrical and hydraulic circuits control operation of the pressure feed cylinders, the constant rate feed mechanism, and the mechanical locks.

Abstract: An improved tracking system for belt-type abrading machines, particularly wide belt machines which employ a drive roll together with a belt tensioning and tracking roll. As is conventional, the tensioning and tracking roll is mounted upon a rocker arm providing for pivotal motion of the roll about its axis, and with the pivot axis of the rocker arm being located generally midway between the lateral ends of the roll. The system employs a primary and a secondary tracking driver, with the primary tracking driver being a conventional system responsive to the belt position sensor, and with the secondary tracking driver being responsive, on a time delay basis, to the drive motion activity of the primary tracking driver. The primary tracking driver is ordinarily a fluid actuated piston member which responds to signals from the belt position sensor, with the secondary tracking driver being a gear motor which drives a worm gear for adjustably repositioning the rocker arm supporting the tensioning and tracking roll.

Abstract: Method and apparatus for controlling the operation of a grinding machine of the type comprising a circular grinding wheel adapted to rotate about its axis and a spindle adapted to hold a workpiece at a position radially spaced from the grinding wheel. The grinding machine includes slide means for advancing the grinding wheel into the workpiece, such means being powered by a threaded shaft and boss arrangement, and "jump-on" gauge means for measuring the diameter of the workpiece and providing an electrical output signal which is used to control feedrate. Feedrate is determined by a microprocessor which is connected to receive the gauge signal and to produce a feed program which will produce a given final diameter in a given time.

Abstract: Plastic extender rings for manholes are produced by molding as a unitary member or extrusion or in molded segments and are seated by the use of caulking or other adhesive material. The manhole cover, which is elevated by the plastic ring from the old pavement level to a new pavement level, is rendered more silent to traffic and is seated more evenly. Plastics are employed which will not melt at the application temperature of asphalt but will soften somewhat to conform better to the contour of the manhole cover and/or underlying manhole top ring. Plastic fillers may be employed in the product to regulate plasticity and increase resistance to deterioration from the elements and from ultraviolet.

Abstract: The Mortar Cap Form, according to the embodiment shown, comprises a plastic-preformed form in which to pour cement or mortar, to define a rectilinear footing for a catch basin. The form, in its basic configuration, presents channels, of right-angular juncture, defined by parallel walls of uniform width. in order to properly align the form with the top course of a catch basin, locating pins project downwardly from a bottom portion of the form, and from inner corners thereof, to pilotingly engage the catch basin course. The parallel walls are spaced apart by a series of traversing ribs; the ribs strengthen or reinforce the walls, and have voids formed therein to accommodate a flow of cement or mortar therethrough. In its supplemented configuration, the Mortar Cap Form includes a second form of parallel walls which also define channels for receiving cement or mortar, but the second form has tapered walls--to complement inclined road surfaces.

Abstract: A frame construction adapted for use in framing panels and forming parallelepiped configurations. The frame construction includes tubular panel edging elements, each defining a pair of opposed arcuate leg portions and interconnecting bight portions, with the legs defining spaced inturned distal ends cooperatively defining a panel edge receiving space. The edging elements are connected by means of corner connectors which connect the ends of a pair of the edging elements. The corner connectors include a body portion defining first and second perpendicularly related portions, a first pair of tongues extending in spaced parallel relationship from the first portion, with each tongue thereof having a segmentally cylindrical outer surface adapted to frictionally engage the arcuate leg portions of the edging elements.

Abstract: A construction unit having an envelope with a forward portion and bottom panels folded toward each other to define an interior for the envelope, and an insert disposed within the interior of the envelope adjacent to the forward portion of the envelope and captured by the bottom panels.

Abstract: A method and building construction element for manufacturing thermally insulated buildings, in which building construction elements are applied which have the form of half a truss with an outer arch side, an inner arch side and two sides of shape plate truss, comprising a core of synthetic hard foam of which the outer arch side and the inner arch side are provided with plate-like coverings and of which sides are uncovered, which half trusses are combined at the construction site to form complete trusses, arranged in adjacent relationship, whereafter the adjoining surfaces are sealingly interconnected. In the method for manufacturing the building construction elements, a mold of corresponding shape is provided comprising an open side and arranged with the open side up, while the upright bent walls of the mold are provided on the inside with a plate-like lining, whereafter the mold is supplied through the open side with the foaming reaction mixture.

Abstract: Roof coverings may comprise one, two, three or more roof trusses including top and bottom longitudinal chords, diagonal rods and vertical posts by means of which the top chord is connected with the bottom chord. The roof trusses are interconnected by means of transverse bracing at distances sufficient to ensure lateral rigidity. Top and bottom abutment girder members are mounted at the ends of the top and bottom chords, respectively. Top and bottom purlins are arranged between the top and bottom abutment girder members at the same levels therewith in panel points of roof truss. The abutment girder members and purlins are secured to said top and bottom chords. Pre-stressed sheet coverings, supported by the abutment girder members and purlins, are secured to said members and purlins and to the longitudinal chords, with the abutment girder members keeping the sheet coverings tensioned and the longitudinal chords compressed.

Abstract: Effective, simple, easily assembled joints between adjacent ends of structural members such as stress-skin panels may be constructed by shaping the ends of such members so that they can be fitted together. Each of such structural members has a core located between two side members. The disclosed invention relates to identically shaping the interfitting ends of such members so that the cores between the side members include sloping walls spaced from the side members by spacing walls. One of the side members on each structural member is constructed so as to overlap a side member on the other structural member when the panels are fitted together. An adhesive is used to join all adjacent surfaces within the joint between such two members.

Abstract: The customary method to prepare the pool bottoms in order to install the vinyl liners is with even, smooth surfaces. Difficulties occur when draining a vinyl liner pool in order to change the water, repair the liner, clean the grease from the liner, or remove the impurities from the pool bottom.In the method which I propose, the pool bottom is finished with plastic or rubber tiles which are pitched in the ground. The upper surface of the tiles is deeply impressed with geometrical designs and cramped channels which allow flow of the underliner air towards a permanent vacuum system at any time. Thus, whenever it is necessary, the liner is sucked to the pool bottom by higher pressures than the normal water pressure of the pool, and the liner maintains its shape firmly until the pool is able to be refilled.

Abstract: The interconnectable border frames with protrusions and grooves are also provided in an improved wooden form for panels which can be combined to form the essential roof, wall, and floor components of a complete building. The floor and wall panels uniquely provide for selectivity in the location of the floor panels along the vertical height of the wall panels.

Abstract: A tacking rail for retaining the border-edge zone of a sheet material under tension. The longitudinal tacking rail has a flat bottom bearing surface and is wedge-shaped in cross-section at one side. A pair of parallel wall members extend oppositely from the wedge in cross-section and define a tensioning groove therebetween which extends substantially along the entire length of the tacking rail. The border-edge zone of the sheet material is adapted to be inserted and wedged into the tensioning groove by means of an auxiliary tool so that it can be retained under tension therein.

Abstract: An improved design for both fixed and operating type windows is disclosed in which the window is thermally broken without the use of an insulating material as a thermal break. The improved windows of the present invention are designed so as to enable both fixed and operating types to be secured to the same frame member thus allowing for easy and architecturally pleasing unit stacking.

Abstract: A clamp for securing a wall panel to a structural support member. A cantilevered spring arm extends from and is spaced upwardly from an attachment base and includes a rib structure of decreasing height from the base to the free extremity formed on the arm to provide an increasing, variable spring rate.

Abstract: A method and apparatus for constructing a development or subdivision of individual dwellings. A large tract of land is subdivided into lots and semi-finished roads are built to connect the lots to a public highway. The roads also connect the lots to a factory in which houses are built and from which they are transported to the lots. Suitable foundations are poured at each site, using special forms. The houses are built on jacks in the factory which support the perimeter frame of the house on a level plane. The house is lowered after completion onto a special trailer to be towed to the lot. Each house structure includes lifting rods extending from perimeter beams at the foot of the house walls. These are connected through a lifting harness to a crane for lifting the house onto the foundation. The houses are delivered progressively toward the factory, beginning at the remote ends of the tract.

Abstract: A method for erecting a large, thin-shell cooling tower. Upon a foundation a series of angularly-extending columns is erected, and the columns are joined at their upper ends by a lower ring. Then a ribbed, waffle-like reinforced concrete wall is constructed to extend up from the lower ring and to provide a shell with a shape such as a hyperbolic paraboloid. The ribbed outer (or inner) surface strengthens the structure while enabling the thickness of the portions in between the ribs to be relatively thin. A series of vertically-spaced horizontal circumferential reinforcing bars or post-tensioning cables and a series of horizontally-spaced vertical or inclined bars or cables, are included in the wall. The wall is preferably made up from a series of precast units that are of novel structure in themselves. At the top of the wall is an upper ring joining the various elements together.

Abstract: A method of removing and reinstalling metal siding on buildings. The method enables the removal of metal siding from buildings to thereby provide access for the drilling of holes for the injection therethrough of particulate insulation such as cellulosic material, for example, and then reinstalling the removed section of siding in such manner as to prevent a change in the overall exterior appearance of the building.

Abstract: A rotor provided with a plurality of air holes therethrough is driven by a vertically mounted shaft. The rotor is disposed beneath a stator provided with two plenums or manifolds on opposite sides thereof. One plenum is pressurized while the other plenum is maintained at a reduced pressure. The rotor is positioned above a bottle line which conveys bottles having tape thereon which must be removed prior to filling the bottles. The vacuum plenum causes the tape to be lifted from the bottles and drawn against the rotor. As the rotor turns it reaches the pressurized plenum where reverse air flow causes the tape to drop into a collecting receptacle.

Abstract: A saddle girth is described that includes a central belt portion that is constructed entirely of an elastomeric substance, particularly a plasticized polyvinyl chloride. The girth includes a fastening means at opposite ends for attachment to the saddle billets of a typical riding saddle. The portion of the girth that comes into contact with the horse is a smooth expansible surface of the belt portion. This girth will expand and contract in response to breathing and movements of the horse and will not chafe the adjacent skin tissues nor become soaked with sweat and grime.

Abstract: The present invention relates to a harvesting machine such as a mower-conditioner and comprises a header with a subframe, the subframe comprising a transverse upperbeam, opposed downwardly-extending legs connected thereto, and a lower transverse beam interconnecting and extending between the legs; the upper and lower beams and the legs together forming a rigid, generally rectangular structure. The header further also comprises at least one rotatable cutter unit having a mounting shaft detachably mounted between the upper and lower beams at a location inbetween the legs.

Abstract: A berry picking device consisting of a container having an open front with a scoop-like portion projecting forwardly therefrom. The scoop-like portion has a bottom wall formed at least in part by a plurality of spaced-apart tines for stripping berries from branches of shrubs, trees or the like carrying the same. The berries stripped from their branches pass over the tines through a screen into a berry collecting compartment. The screen is a mesh or plurality of rods spaced apart from one another with appropriate opening allowing berries to pass therethrough and hold back the loose branches and other debris separating the same from the berries. A portion of the forwardly projecting tines pass over another compartment and the spacing between the tines is such that small berries pass therethrough into the compartment thus separating the collected berries into two different sizes.

Abstract: A baler having an improved pickup counterbalance mechanism is disclosed. The improved mechanism includes biased pivot cranks connected to each end of the pickup and a variable length connector slideably fixed between the biasing means to provide a single adjustment for effectively equalizing the counterbalance forces on the two lateral ends of the pickup.

Abstract: Apparatus in a crop roll forming machine for collecting particles of crop material lost from either the crop package or loose crop material during the roll formation process consisting of a collection pan, a horizontal collecting auger, an elevated delivery auger, intermeshing bevel gears, drive means and a discharge chute. The particles are recycled from the collection pan back into the roll forming region by the cooperative interaction of the horizontal collecting auger and the elevated delivery auger so that the crop material particles are directed out of the discharge chute and downwardly into the forwardmost portion of the bale forming region where the upper bale forming means works to include the particles in the crop roll being formed.

Abstract: An adjustable support system mounts one member, such as a textile spindle, on a second member, such as a textile machine rail, so as to reduce the transmission of vibrations between the two members. The support system incorporates a flange to which is secured an elastomeric element for resiliently mounting the textile spindle relative to the flange. The flange is kept spaced apart from the machine rail by a member or members that at least contact the flange and at least contact the machine rail. The spacing between the flange and the machine rail can be adjusted through manipulation of adjusting screws or bolts in such a manner as to change the orientation of the flange and the textile spindle mounted on the flange relative to the machine rail. Like the spacing member, the adjusting elements contact both the flange and the machine rail.

Abstract: Knitting material for handicraft or mechanical knitting operations which comprises a fine tape comprised of a non-woven fabric prepared by the spun-bond process, said tape having been obtained by slitting said non-woven fabric, said tape having a weight unit per area of not more than 30 g/m.sup.2 and having from 2 to 20 turns per one meter lengthwise.

Abstract: A time generator circuit comprises a reference signal generator and frequency divider circuits to divide the reference signal to generate a first signal at an audio frequency, an hour signal, and a plurality of third signals of different predetermined frequencies. The third signals are applied to a selecting circuit which selects one of these signals. An output generating circuit receives the first signal as an output time signal in response to the second signal during a time period determined by the selected one of the third signals.

Abstract: An electronic watch circuits for the measurement and the display of time and for measuring a reaction time, and which further includes circuits controlling the display of a signal determined by comparing the measured reaction time with a reference time.

Abstract: The invention is concerned with novel apparatus and process for converting crude carbon such as coal, carbonaceous wastes and the like into valuable chemical products and/or energy. A mass of solid crude carbonaceous fuel is fed into a high temperature liquid which acts as a solvent for carbon at a temperature sufficient to carbonize the mass and by which the carbon is separated from impurities. Volatile fractions are removed from the mass which acts as a distillation column. Air, or another oxygen source, is introduced into the reactor wherein it reacts with the carbon dissolved in the liquid therein, which may preferably be iron to form a hot fuel gas. The hot fuel gas is then used to produce useful energy, generally via a stepwise procedure.

Abstract: A fuel control system for a gas turbine engine has a main metering valve which is positioned by a servo pressure signal controlled by a pilot valve. The pilot valve is responsive to compressor pressures within the engine and also to the operating position of the main metering valve. Response to the main metering valve position is variable in accordance with the difference between desired and actual engine speeds, and is effected by varying the position of a force multiplying roller interposed between the main metering valve and the pilot valve.

Abstract: A potted head combustion chamber is provided with an annular gap between the downstream end of the pot and the combustion chamber itself. Air is supplied radially inwardly through this gap to remove any fuel which adheres to the walls of the pot, and prevents it from reaching the walls of the combustion chamber. Fuel on the combustion chamber walls can cause localized burning of the fuel with a consequent increase in temperature of that part of the combustion chamber wall.

Abstract: A structurally compact air-to-air heat exchanger, for a gas turbine engine of the fan bypass type, that permits a lower percentage of cooling air, than is presently needed in the art, to cool effectively the hot turbine, and its parts, of the engine. This goal is achieved, in part, by using a portion of the cool flow of fan air as a heat sink, without disturbing the flow of the fan air stream. The heat exchanger is disposed internal of the engine, and, it includes a plurality of flow tubes through which flows the hot cooling air, with the flow tubes positioned in a crossflow relationship with and to a portion of the cool flow of fan air. Three (3) variations of the preferred embodiment of the heat exchanger also are taught.

Abstract: A rocket assisted projectile is equipped with a bi-metallic disk which ches shape to compensate for propellant grain growth or shrinkage with change in ambient temperature for maintaining the propellant in a predetermined position within the combustion chamber of the rocket. The disk is located in the combustion chamber forward of the propellant grain and bears against the chamber forward wall and the forward end of the grain. The effective thickness of the disk increases with reduced temperature so that the grain is maintained in solid contact with the base of the projectile to prevent excessive energy absorption upon firing of the projectile.

Abstract: A liner of thin wall heat resistant material is positioned to receive exhaust gases from two adjacent exhaust port passages of an internal combustion engine, downstream from the exhaust valves. Each liner has a single outlet opening formed within a circular projection. A support piece has a central opening which receives said projection, and the support piece has an outer peripheral skirt which is mounted in a recess at the outer end of a dual exhaust port passage. The support piece also serves to block flow of exhaust gases in the space between the liner and the enclosing exhaust port passages. In a modification, each liner receives exhaust gases from only one exhaust valve.

Abstract: A combined heat exchanger, exhaust and induction manifold for attachment to an internal combustion engine in which a coolant jacket wholly or partially surrounds exhaust and induction manifolds. The jacket and manifolds are integrally formed as a single casting with the requisite passages to produce a compact sub assembly easily attached to the engine thereby simplifying engine building. Engine coolant circulated through the jacket controls exhaust manifold temperature and the heat exchanger cooled by a second medium, e.g. sea water, controls, with the aid of a thermostatic valve, the temperature of the engine coolant. Provision is made for mounting an exhaust driven turbocharger on the manifold at the outlet of the exhaust manifold.

Abstract: In an oil-coupling arrangement for transferring the drive from a driving shaft to a driven shaft, particularly for the propulsion of ships, the improvement is disclosed wherein the oil cup system has switchable vanes which can be switched from one position to another, and vice versa, so as to deflect the oil stream in the driving and the driven cup in such a way that the driven cup is compelled to rotate in a direction contrary to that of the driving cup.

Abstract: An oil well pump drive including a drive unit that is hydraulically actuated by a double-acting hydraulic cylinder to reciprocate vertically. An endless chain is entrained over vertically spaced sprockets carried by the unit, with one flight of the chain anchored against vertical movement and the other flight is secured to the pump polish rod so that the vertical motion imparted to the polish rod is double that hydraulically imparted to the drive unit. The polish rod load on the chain is opposed by a counterweight connected thereto by a chain extending over an elevated pulley. The output of the hydraulic pump supplying the hydraulic cylinder is cam controlled so that the motion of the drive unit is smoothly decelerated and accelerated as the unit approaches and moves from the upper and lower limits of its movement.

Abstract: A hydrostatic winch having a hydraulic drive system with a dual control valve which adjusts pressure in control lines for varying the speed of lowering and hoisting a load and a brake for stopping the load has an overspeed control system which includes first valve means for relieving pressure in the control lines and first valve control means which opens the valve to automatically slow the speed of the winch when the load is moving too fast and a fail safe system for smoothly stopping the load, if necessary, which includes a braking system having a normally "off" brake which is biased towards an "on" position but which is held in the "off" position by a hydraulic cylinder.

Abstract: A hydraulic system pressure fluid accumulator apparatus is disclosed that meets peak load demands beyond the flow capacity of the system pump. Gas cylinder actuation of the accumulator piston augmented by system pressure feedback actuation of the piston metered by a pressure regulator valve maintains accumulator output pressure level substantially independent of piston displacement.

Abstract: A fusible link is provided in a force transmitting device. Upon reaching a preselected temperature, the fusible link melts causing a cooperating locking member to engage a shoulder on a power piston to secure the same in an extended operating position and effect a lock-open condition for certain critical applications.

Abstract: A thermally responsive power device is disclosed employing a thermally sensitive unit in which are housed multiple vapor/gas filled capsules which expand and contract in response to temperature changes. The thermally responsive element is connected in a closed system through a conduit or tube to a remote diaphragm power or motion producing unit, and a temperature stable hydraulic fluid filling the space with the system moves the diaphragm in accordance with the expansions and contractions of the capsules. Several different embodiments for the capsules and their housings are shown, and all embodiments contemplate selective use of capsules with different vapor/gas fills to tailor the completed thermally sensitive elements to provide substantially equal temperature sensitivity in two or more regions of their working temperature range.

Abstract: A method and system for effecting control governing of a steam turbine wherein the steam chamber of a first stage nozzle is divided into a plurality of steam compartments, control valves each connected to one of the steam compartments are individually operated for controlling the flow rate of steam introduced into the turbine, and the governing of the nozzle is effected by adjusting the flow rate of steam in accordance with a load. At low load, the degree of opening of the control valves is kept constant and the turbine is driven by steam of a reduced pressure by reducing the pressure of the steam at the inlet of the turbine so as to maintain, in a low load region, the volume flow rate of steam for a high load region. To cope with a change in the value of the load, the degree of opening corresponding to a predetermined change in the value of the load is set beforehand for each control valve.

Abstract: A power generator including a closed pressure resisting tubular loop having a lower warmed end and an upper cooled end joined by connecting penstock column and a return column, the tubular loop being filled with fluid under pressure, the critical point of which is between the temperatures of the cooled and warmed ends, to cause the fluid to convert to a liquid phase in the upper end for discharge into the penstock column, and cause the liquid to convert into a gas phase in the lower end, for discharge while in its gas phase into the return column so that circulation of fluid as it converts between its liquid and gas phases is continuous, and a hydraulic power unit driven by downwardly moving liquid in the penstock column, reacting to the hydrostatic pressure so generated.

Abstract: A system for utilizing solar energy efficiently in air conditioning systems during the heating mode having at the evaporator heat exchange means which extracts the heat from ambient air when the latter is greater than 47.degree. F. and from solar heated fluid when the ambient air is less than 47.degree. F.

Abstract: Disclosed is a solar powered heat pump useful for both heating and cooling building space and for providing refrigeration. The device operates on a chemical effect (adsorption) intermittent heat pump cycle in which the moderately high temperature heat generated by insolation is used to drive the desorber. The device has inherent thermal storage, can be factory built, sealed, and tested, can be electronically controlled for completely automatic operation, and includes a built-in back-up heater which obviates the need for installation of a separate back-up heating system. It can be manufactured from inexpensive materials such as glass, and implodes rather than explodes on failure.A preferred embodiment of the device is designed as a modular unit which can readily be combined with others of identical design to produce a solar powered battery panel for heating and cooling. This embodiment preferably comprises a tubular enclosure defining a pair of chambers separated by a valve.

Abstract: In a combination of apparatus for storing liquefied natural gas which includes an insulated separation tank in which solidified carbon dioxide is settled out of liquefied natural gas and a liquefied natural gas-solidified carbon dioxide slurry accumulates, an insulated liquefied natural gas storage tank, and a conduit for delivering liquefied natural gas from the separation tank to the storage tank, the improvement comprising a conduit for withdrawing natural gas boil-off from the storage tank and feeding it to a compressor, a conduit for feeding compressed natural gas boil-off from the compressor to a heat exchanger for indirect heat exchange with a liquefied natural gas-solidified carbon dioxide slurry in the separation tank to cool the compressed natural gas to reliquefied natural gas, and a conduit to feed the reliquefied natural gas from the heat exchanger to the storage tank.