Abstract: A dynamic Random Access Memory consisting of pairs of adjacent one transistor/one capacitor memory cells. The gate electrodes of the MOS FETS in each pair of adjacent memory cells are coupled and further connected to an address line at only a single contact hole. There is also disclosed a method for manufacturing the dynamic Random Access Memory with a high integration density. The gap between one electrode of the capacitor and the MOS FET is minimized by converting the end portion of the capacitor electrode to a thin insulating film.

Abstract: A method for forming a solar array strip including the steps of depositing solder pads on printed circuitry deposited on flexible substrate storing the resulting substrate on a drum, withdrawing the substrate from the drum and incrementally advancing it along a linear path, serially transporting solderless solar cells into engagement with the pads and thereafter heating the pads for thus attaching the cells to the printed circuitry, cleaning excess flux from the solar cells, encapsulating the cells in a protective coating and thereafter spirally winding the resulting array on a drum.

Abstract: In the process of fabrication of semiconductor devices, a lead frame hoop supplied from a supply reel is set forward to successively enter into a series of fabricating steps. After having been subjected to pellet bonding, wire bonding and resin-molding, it is wound up about a take-up reel. Baking step is performed with the lead frame hoop wound on the take-up reel. The lead frame hoop unwound from the take-up reel is cut into separate individual semiconductor device units from one another and the measurement of characteristics and the classification of the thus prepared units are carried out with the positions of the units maintained as they were at the cutting step. Accordingly, the process has a smaller number of steps and therefore the production cost is reduced, and the speed of working is improved.

Abstract: A method for assembling a stator for an electric machine having a permanent magnet for generating a magnetic field in an air gap. Assembly of the stator is performed with the aid of a plunger, the cross-section of which corresponds to the cross-section of the air gap. The permanent magnet is slid into the interior of the plunger, whereas the flux return ring is slid over the same. The so formed sub-assembly is put into a casting mold adapted to be filled with a plastics material, which in its cured or hardened state forms a casing intimately surrounding the outer surface of the flux return ring and forming a face plate, to which the permanent magnet adheres. When the plastics material has set, the casting mold is opened and the plunger is retracted from the sub-assembly, resulting in a close toleranced cylindrical air gap space. After insertion of a bell-shaped rotor, a brush cover is assembled opposite the face plate.

Abstract: In the fabrication of a resistance heater for a carton for packaging a pizza, an aluminum metallized sheet is adhered to a paperboard panel, a generally U-shaped strip of arc-sprayed zinc is applied to three edge portions of the upwardly facing electrically conductive metal layer of the metallized sheet, the interconnecting portion of the U-shaped strip and the immediately underlying metal layer are severed, and the metal layer is severed along a line extending adjacent the same interconnecting portion to the side thereof enclosed by the U-shaped strip, so that each of the severed sections of the interconnecting portion serves as a terminal for a corresponding leg portion of the U-shaped strip comprising the electrodes for the intermediate region of the metallized sheet.

Abstract: An apparatus and method for assembling articles such as clips, comprising first and second components formed from metallic sheet stock, said apparatus including an outer annular member and second and third dial members mounted within the annular member, the annular and dial members being rotatably mounted in a synchronized manner associated with the cycling of a die press. Pairs of article components are continuously punched with each press cycle and pushed through an opening in a die block to be received and held at rotatably indexing receiving stations in a horizontal orientation in respective ones of a plurality of clamping assemblies formed in each of the outer annular member and second inner dial member, respectively.As the annular and second dial member rotatably index, the respective clamping assemblies pivot unit the first and second article components are held in a vertical orientation.

Abstract: The invention provides an adjustable cracking device for cracking nuts of a wide variety of sizes. The device comprises first and second elongate rigid members, each including an elongate handle portion and having a curved serrated gripping surface adjacent one end thereof. The elongate rigid members are pivotally connected together adjacent the gripping surface sections thereof for movement toward and away from one another. In one embodiment of the invention, the elongate members are pivotally connected by an adjustable fulcrum formed integrally by the elongate members. In a second embodiment of the invention the first elongate member is pivotally mounted to a central coupling member for movement toward and away from the second elongate member. The second elongate member has an additional serrated gripping surface on its side opposite the first gripping surface.

Abstract: A pill cutter of a relatively simple construction, including an upper and a lower member which are hingedly or otherwise affixed together at one end thereof so that one member may be pivotally rotated with respect to the other. On the inner facing surfaces of the upper and lower members of the pill cutter are disposed a pair of resilient pads which are positioned to engage one another when the upper and lower members are pressed together. One of the resilient members is of a split construction, and a wedge is disposed between the split halves thereof. This wedge preferably is of a height which is less than the thickness of the resilient pad so that the apex of the wedge is disposed below the surface of the resilient pad.

Abstract: Module control block assemblies are clamped in a bank to individually control to handpieces drive air and air and water coolants and also supply drive air pressure to a gauge through an oversize aligned bore in blocks of the assemblies through which extends a tie rod clamping the assemblies together. The blocks have supply passages therethrough for the above fluids, and covers for the blocks have diaphragm chambers and passages therealong to control flow of the fluids to outlets in the block. Water coolant control valves are mounted on the covers, and are supplied with control air and water coolant from branch passages in the blocks leading to passages through diaphragms and the covers.

Abstract: Novel tool operating apparatus is exemplified in a dental treatment device capable of driving alternatively at least a first tool and a second tool, each tool being intended to execute a different form of motion, with a single tool driving means to which each of several different tools can be removably coupled. The driving means includes a rotatable drive shaft fitted with tool engagement means in the form of a disc affixed to the shaft and lying in a plane that makes an acute angle with the rotational axis of the shaft. One tool can be fitted over the shaft to engage the disc so as to rotate the tool with the shaft. A second tool can be fitted over the shaft so that the shaft can rotate within the tool, but the tool will not rotate with the shaft. The second tool has means for cooperating with the shaft so as to execute an oscillatory motion relative to the shaft axis.

Abstract: A template for drawing accurately-positioned circular or straight lines regardless of the tip angle and diameter of the writing instrument used therewith has specially-shaped holes positioned at respectively different, predetermined spacings from a reference point, which may be an edge of the template or a pivot point on the template. Each hole has an elongated shape with opposed edges which converge at acute angles and which are equidistantly spaced from the line the hole is provided to draw. The holes may be arranged in parallel rows and spaced predetermined distances from either a single pivot point or multiple pivot points, or they may be in radial rows emanating from a single pivot point. The pivot point may comprise a pierced removable insert to accept wear from a pivot such as a tack, or it may be a hole in the template with a pivot point springably mounted adjacent the hole and lowerable thereinto.

Abstract: A dryer for automated washing and drying of mesh or perforated bottom trays such as those used for bakery goods, which includes a source of air under relatively low pressure and has a means to direct air at a relatively high velocity through the mesh or open bottom tray as it is carried on a perforated or open conveyor, and vacuum means connected to the suction side of the same fan to collect and receive moisture laden air and water droplets that pass through the tray and the conveyor. The fan includes a water-air separator on the inlet side so that the inlet air carrying the water is processed to remove water droplets and the like.

Abstract: An egg drying apparatus is disclosed incorporating an improved laminar air flow for more effectively drying eggs. The orifices for discharging and directing air towards the eggs to be dried have a coefficient of discharge of at least about 0.8. The orifices are disposed in the bottom of a chamber and are formed by adjacently spaced elongated members having curved air contacting surfaces along the longitudinal axis of each member. A fan draws air into the chamber which is directed towards the eggs via the orifices. In the preferred embodiment, the coefficient of discharge of the orifices is about 0.9 and curved portions of the elongated members are U-shaped channels with the exterior of adjacent channels forming the orifices.

Abstract: The invention relates to an educational toy in which a child is taught to read by association of a written word with an image. In operation the toy has a learning phase in which the image and the corresponding word are displayed and a testing phase in which the word is hidden and a choice of words is presented to the child for selection of the appropriate word.

Abstract: A psychological game which is designed to be used mainly as a tool to enhance personal exploration and growth. The essential pieces include a base with a multiplicity of recesses and a multiplicity of spheres of varying colors which can be fitted into the recesses. Each sphere has a portion which can be writton on. The game is used by writing answers to specific questions on each sphere of the same color and then arranging all of the spheres to form a tetrahedron. The arrangement of specific color patterns adds significance when used in the processes of the invention.

Abstract: An apparatus for educational use in the playing of mathematical games utilizes forty-four playing cards. Each of the cards bears an enlarged numeral extending over the ranges from one to forty-four. Each card has the same surface carrying the enlarged numeral encoated wtih three multiplication steps and three division steps whereby one common numeral is used in each multiplication step and as a divisor in each division step. None of the numerals is extended beyond number 12 excepting the enlarged identifying numeral. The users record their proficiency in rapid use of each card, when randomly collected, on a score board having four wheels with a score imprinted thereon. The wheels are rotatably secured to a plate having windows exposing the score value on the wheels. Each of the four wheels are separately identified by a color, equivalent to the color of each four separately decorated medallions.

Abstract: A hand tool useful for shifting snow or other flake or granular material is disclosed. The device resembles a conventional metal rake with a blade attached to the ends of the tines. Alternating tines or strips are deflected in opposite directions and are fastened to the blade so as to form a construction which lends stiffness to the tool.

Abstract: A trench excavator has a raisable and lowerable boom swingable about a vertical axis on the self-propelled chassis which is mounted on tracks. The boom carries a cutting head which is swingable about a horizontal axis at the free end of the boom so that the excavator tool can be inclined downwardly toward the chassis. According to the invention, the inclination of the cutting head is measured and the measurement is used to control the drive for the track.

Abstract: In a preferred embodiment, there is privided a microfilm jacket support supportable of a flat microfilm jacket in a horizontal position in an anchored state with a leading edge of the jacket extending beyond the support when mounted thereon, and with a microfilm insertion opening into microfilm jacket reservoir space being positioned at the edge of the support face-up when mounted on the support, and as a part of the combination additionally there being an upper edge pressure-flexing mechanism for flexing downwardly the leading edge extending beyond the support adjacent the insertion opening, and a feeding mechanism for aligning a longitudinal elongated axis of the microfilm with a longitudinal elongated axis of the microfilm jacket reservoir space and with the insertion opening and for feeding advancingly intermittently microfilm into the insertion opening and for intermittently severing microfilm, and additionally for mounting in association with microfilm immediately adjacent the insertion opening a microf

Abstract: An improved compact repeating slide viewer of the type having two compartments, one for storing a stack of slides and the other for viewing individual slides, a longitudinally shiftable slide carriage feeds the topmost slide of a stack to the viewing compartment and then returns the viewed slide to the bottom of the stack with the slide carriage retracting a spring actuated tongue which acts upon the stack until the viewed slide is returned to the bottom of the stack and then releases the tongue to elevate the stack for feeding of the next topmost slide. The viewer also includes means for easily loading and unloading slides from the stack or from the viewing compartment, and is constructed to be easily manufactured from molded plastic parts.

Abstract: This invention is a disc-type, aerodynamic toy. This toy consists of a fabric center which can be altered by the owner to varying thicknesses and degrees of coverage for aerodynamic purposes. The fabric center is bounded by a rim into which the center is pressed. A smooth convex surface surrounds the center and rim. The smooth convex surface is bordered by a lip which is turned inwardly toward the center of the toy. The smooth surface combined with the heavy center of varying thickness, and degree of coverage, makes the toy extremely stable, a toy which the owner can alter to suit his or her aerodynamic requirements.

Abstract: A toy fire engine is disclosed including a body, wheel and axle assembly, aerial ladder, ladder support and loose ladder. The ladder support may include a turret for pivotal support of the ladder about a vertical axis. The fire engine body may include a ladder carrier which limits sideward movement and linear movement of a loose ladder when disposed in the carrier.

Abstract: A guide rod, for rolling a toy hoop, formed of a squared U-shaped guide portion with a short shaft portion arranged approximately perpendicular to the plane of said guide portion and integral with the free end of one of the legs of the guide portion. An elongated pole-like handle is releasably connected to the end of the shaft. The guide portion is made in interchangeable left and right hand configurations, by arranging the U-shape on its side, to open sideways, with the shaft formed on the free end of the upper leg, and with the shaft extending approximately perpendicularly away from the plane of the U-shape in either one or the opposite direction to form either a left or right handed guide, either of which may interchangeably be used with the same handle.

Abstract: A simple and inexpensive puppet is manufactured by the bonding of a pair of rigid, flat, relatively thin members, side by side, on a resilient backing member. When the rigid, flat members, which are originally mounted in a coplanar relationship by the resilient member, are articulated toward one another, the resilient backing tends to return these rigid members to a coplanar position. The puppet may thus be used by grasping the reverse side of the resilient portion between the thumb and index finger to urge the rigid portions to articulate toward one another. Releasing the pressure between the thumb and index finger allows the rigid members to articulate further away from one another. The puppet thus provides an articulating structure which may carry artwork or other indicia exemplifying a face or mouth so that, as it is manipulated between the thumb and index finger, the puppet appears to open and close its mouth.

Abstract: An article of manufacture useful as an attractive decorative object constructed to utilize the flower and leaves of the exotic bird of paradise flower to simulate the cuckoo-like road runner bird indigenous to South-Western U.S. desert areas. The V-shaped tubular main body is supported on legs fashioned like those of the road runner and its opposite ends are receptive of the stems of the paradise leaves and flower in a stance simulating the tail, wings and head of the road runner.

Abstract: A method of preparing a laminar seed carrier in which a support comprising an unsized or lightly sized paper web of tangled short, smooth individual fibres is provided with one or more patches of an adhesive substance, seeds are applied to the patch or patches of adhesive substance, an upper paper web comprising a porous web having a lower weight than the support paper web is placed over the seeds and bonded to the support paper web and is treated with one or more powdered water-storing substances to incorporate the powdered water-storing substances within the pores of the upper paper web.

Abstract: Disclosed is a regulator mechanism for two window panels mounted in the door of an automotive vehicle. The panels are slidable independently of one another in a common plane between raised and lowered positions under the control of the regulator mechanism. Both window panels are operated by independently operable lever arms, both lever arms being mounted for rotation on a common pivot shaft. The lever arms are secured to respective sector gears, both sector gears also being mounted for rotation on the common pivot shaft. Each sector gear is driven independently of the other by a driving gear, the driving gears being angularly spaced from the pivot shaft to prevent operative interference between the operative end of each lever arm. The mechanism is mounted as a unitary assembly on a unitary mounting plate, the plate providing a support structure for the common pivot shaft and the respective pinion shafts.

Abstract: A sharpening device for an orbital saw involving a pair of circular grinding stones freely journalled in a sub-assembly which in turn is slidably and pivotally mounted on the frame of the saw while being pivotally supported on the member providing the orbital motion for the saw.

Abstract: A feeding device, especially for a honing tool, in which a frame is formed with a cylinder having a piston mounted therein and to which is connected a spindle or feed rod having the tools mounted thereon. The piston will effect rapid advance and retraction of the feed rod while the connection of the piston to the feed rod embodies threaded means which can be adjusted incrementally or manually to effect fine feeding movement of the tools following the rapid advance thereof. Automatic control means are provided for controlling the incremental feeding of the tools and for compensating for tool wear.

Abstract: A device for polishing plano-convex lenses, quartz oscillators and the like comprises a lapping dish having a concave spherical surface and mounted for oscillating and rotary movement. The material to be polished is held by a suction rotary chuck which applies the material to be polished against the lapping dish with a selected pressure. Separate motors are provided for rotating and oscillating the lapping dish and for rotating the material to be polished.

Abstract: A portable grinder utilizing a standard electric hand drill as a source of mechanical power has a support base structure upon the upper surface of which is journalled a drive spindle one end of which is adapted to receive, in driving engagement, the chuck of the hand drill, and the other end of which serves to drive a grinding wheel and other rotatively driven tools selectively attachable thereto. Adjustable means is provided for supporting an electric hand drill in rotary alignment with the drive spindle; and a cover member removably attachable to the base structure renders the assemblage fully portable.

Abstract: A method and apparatus for reducing tangential force variation in a pneumatic tire wherein the tire is mounted on a wheel rim, inflated to operating pressure, and rotated under a predetermined load against a loading drum. Force transducers on the axis of the loading drum measure the tangential force variation as the tire rotates. These measurements are placed into the memory of a computer. The computer processes this data to obtain the magnitude of the tangential force variation and the phase angle from an arbitrary location of the variation or the angular displacement to the point of maximum magnitude. The computer outputs a V-shaped ramp voltage level signal for controlling the servo-valve which moves a rotary grinder into grinding engagement with the inner tread ribs of the tire. The grinding is repeated for a number of revolutions depending upon the magnitude of the variation.

Abstract: An improved barrel polishing process is disclosed in which pieces or parts mounted in a rotary barrel on spindles carried by the head thereof are passed through the abrasive layer formed in the barrel. The pieces are forced to turn around a vertical shaft while turning on their own axis so that they pass alternately through a denser portion of the abrasive layer and through a coarser portion. This ensures a uniform finishing of the pieces.

Abstract: A rotatable cutting tool (10) of the disclosure includes an expandable cutting section (40) and a leading end having an expandable pilot (16) for properly aligning the tool during use. The trailing end of the tool preferably also has an expandable pilot (18) for aligning the tool during movement back through a bore which has been machined. A unitary body (20) of the tool has a helical slot (24) extending axially therethrough and has an inner tapered surface (26) for mounting the tool on a tapered arbor (12) such that movement therealong by nuts (34, 36, 38) engaged with axial end surfaces of the pilots controls the size of the cutting section and the pilots. The expandable tool construction is particularly adaptable for abrasion tools and is disclosed with abrasive particles (22) secured to the cutting section.

Abstract: A modular church steeple apparatus has a plurality of stackable modular spire units, which can be stacked one within the other for shipment, along with a mast, broken down cupola and base, and coupling and fastening members. The modular spire units can be attached onto the elongated mast and coupled to each other with spacing diaphragm plates between, and pinned and bolted together. The entire steeple can be assembled at the church site, attached to the church roof, and a cupola and base mounted thereto.

Abstract: A low cost skylight which can be provided in kit form for installation includes at least two rafter bow members. Each of these members has a convex upper edge and a straight lower edge. The straight lower edge of each bow member rests on a rafter at the edge of a roof opening. The skylight includes a sheet of flexible, light-transmitting material which overlays the rafter bow members. Fasteners, such as round head wood screws, are used to fasten the upper and lower edges of the flexible sheet to the roof surface. Gaskets and flashing members are disclosed for establishing watertight seals at the edges of the skylight.

Abstract: The prefabricated building frame structure or gazebo is of octagonal configuration and has a centrally located vertical axis. It includes a structural support system, a floor system carried by the support system above ground level, and a roof system carried solely by the support system. The floor and roof systems are provided with collars, each with at least three sides, which are spaced apart and are located on the vertical axis. The structural support system includes at least three vertical support columns with each column being spaced an equal distance from the axis and being spaced equal distances from adjacent columns to form the octagonal configuration. The floor system includes joists of equal length, one for each collar side and corresponding column. The joists extend from the floor collar to the support columns. The sides of the roof collar and the upper end portions of the support columns are provided with fastening brackets.

Abstract: Anchor element for the tilt-up and transport of prefabricated building components, particularly prefabricated wall panels, in cooperation with a hoisting shackle of the type having a torus-shaped body and a retractable arcuate locking bolt engaging a bolt hole in the exposed end portion of the anchor element, the latter defining a bridge portion between its bolt hole and its outer extremity and, as part of the bridge portion, one or two integral longitudinal extensions of the anchor element which reach beyond the bridge portion and have two oppositely oriented force-transmitting surfaces one of which engages a surface of the hoisting shackle body during tilt-up, thereby preventing pivoting of the shackle body against the concrete recess which surrounds the exposed portion of the anchor element. The anchor element with two laterally spaced integral extensions engages the sides of the shackle body, and the anchor element with a central integral extension engages an aperture in the shackle body.

Abstract: A double-layered wooden arch truss to be used for frameworks of wooden roofs and characterized in that the wooden arch truss is double-layered with an upper arch member formed of layered wooden plate material and a lower arch member formed identically to the upper member, the wooden arch truss being usable for cattle houses, etc.

Abstract: A liquid soap dispensing system includes a closed soap container having a manually actuated dispensing pump carried therebeneath. Refill of the container is by a plastic refill squeeze bottle with a neck defining an outlet opening closed by a membrane recessed therein. One embodiment of the bottle is formed by ultrasonically welding in the neck end, after the bottle is filled, a plug defining a cylindrical sleeve closed at the inner end thereof by a closure wall. The neck is inserted into a well in the top of the container, and a hollow piercing member at the bottom of the well ruptures the membrane or closure member, whereupon soap may be squeezed from the bottle and through the passage through the hollow piercing member, which is constricted by septa dividing the passage into channels such that flow of liquid soap therethrough at equal pressures at both ends of the passage is substantially inhibited.

Abstract: Harvesting apparatus for harvesting fruit, berries, and similar produce is disclosed, wherein the apparatus includes a plurality of harvesting fingers which are subjected to rotational and vibrational movement by shaker heads. The shaker heads are in assemblies of at least two shaker heads, and each shaker head of a given assembly is coupled to produce the same rotational and vibrational movement of each head. The shaker heads are moveable transverse to a longitudinal horizontal axis of the harvesting apparatus, and are pivotable, so that they can conform to the shape of bushes bearing the desired fruits, berries or other produce.

Abstract: A new method has been invented for introducing texture, crimp, or set twist into synthetic polymer yarns which eliminates the need to heat the yarns prior to the texturing step. It has been found that the heat generated in the drawing step of synthetic yarn manufacturing processes is sufficient to cause a twisted undrawn yarn to retain the twist permanently after being drawn. The mild heat treatment experienced by the fibers is highly uniform and produces textured yarns of exceptional uniformity, especially with respect to dyeability, as compared with textured yarns produced by known art processes.

Abstract: Singles yarns are formed from a synthetic material, twisted in one direction, heat-set, cooled and false-twisted in the opposite direction. Two similarly treated strands are joined at their nodes and plied, resulting in an improved ply-twist singles twist ratio. The first twisting and heat-setting can be done concurrently using jet twisting with steam, and apparatus for accomplishing this is disclosed.

Abstract: A booster circuit for an electronic timepiece having a power supply and a display device adapted to be driven in a matrix driving mode, which comprises a Cockcroft circuit connected to one terminal of the power supply to provide a plurality of boosted output voltages to the display device and voltage compensating means connected to the other terminal of the power supply to compensate for voltage drops caused by said Cockcroft circuit.

Abstract: An analog quartz timepiece having a manually operated external control member, and a correction signal generation circuit controlled by the external control member to generate low speed and high speed correction signals when the external control member is actuated for a short period of time and for a predetermined time interval, respectively, by which a stepping motor is driven at a selected speed to perform time correction. The timepiece alo includes a click mechanism operative to shift an hours hand step-wise from any optional position without affecting a minutes hand and a seconds hand. The timepiece further includes a seconds zero-reset mechanism operative to reset the seconds hand to zero.

Abstract: Disclosed is a secondary air feed control device in an internal combustion engine having in its exhaust system a three way catalytic converter and an oxygen concentration detector. This detector provides a signal indicating that the total air-fuel ratio is smaller than the stoichiometric air-fuel ratio. The secondary air feed control device comprises a valve port through which the secondary air passes, and an air valve co-operating with the valve port. The air valve is actuated by a pair of diaphragm apparatus. One of the diaphragm apparatus is selectively connected to either the intake manifold or the atmosphere via a restricted opening in response to said signal. The other diaphragm apparatus is selectively connected to either a vacuum source of a constant level or the atmosphere via a restricted opening in response to said signal. The opening speed of the air valve is reduced and the closing speed of the air valve is increased in accordance with the reduction in the level of the load of the engine.

Abstract: A reversible cycle heat pump refrigeration system having an outdoor heat exchanger coil and an indoor heat exchanger coil, and including an auxiliary coil arrangement located in the system so as to increase the heat pump capacity of the system. The auxiliary coil arrangement is associated with, and in air flow arrangement with, at least one of the heat exchangers. The auxiliary coil is connected in parallel refrigerant flow arrangement with the expansion device so that when the associated heat exchanger functions as the system evaporator liquid refrigerant by-passes the auxiliary coil, and when the associated heat exchanger functions as a condenser the auxiliary coil functions as a subcooling coil.

Abstract: In an hydraulic system in which an hydraulic accumulator is charged with hydraulic fluid under pressure by means of an hydraulic pump which draws hydraulic fluid from a tank, and an unloader valve disposed in a supply line between the pump and the accumulator is operative to prevent the accumulator from being overcharged and to allow the pump to re-charge the accumulator should the pressure stored therein fall below a desired minimum value, the unloader valve incorporates a control valve, and a pressure responsive slave which is operated by fluid pressure under the control of the control valve.

Abstract: A transmission having hydraulic components including a hydrostatic unit with a variable displacement component having a hydraulic displacement control with a lubrication circuit for the components and a charge circuit for supplying fluid under pressure. First and second pumps are connected in series, with the first pump having a larger volume than the second pump to provide fluid to the second pump and to a lubricating circuit. A fluid line connects between the charge circuit and the lubrication circuit and has a lubrication priority valve therein which operates to provide fluid flow from the charge circuit to the lubrication circuit when required to maintain pressure in the lubrication circuit. Additionally, the charge circuit has a pair of branch lines, with one branch line having a charge priority valve therein which functions to control the flow through the one branch line leading to the hydraulic displacement control for the hydrostatic unit and to thus provide pressure control in the other branch line.

Abstract: Apparatus for high pressure-charging an internal combustion engine in which the pressure drop of the engine exhaust gases is divided into two stages and used to compress the combustion air in two stages. An exhaust-gas turbocharger and a gas-dynamic pressure-wave machine are connected in series on the exhaust-gas side and also on the air side and each machine functions as one stage of the two-stage combustion air compression.