Abstract: A control system for the use of the main engine of a vehicle as a heat source in maintaining the temperature of an operator compartment. The system is manually enabled subject to multiple criteria, the temperature in the operator compartment is monitored, and signals for the desired operator compartment temperature within an about plus or minus 10 degrees control range are produced. The main engine of the vehicle is enabled to start and run by all standard safety features and with a fuel flow controlled idle power output. Cycling through the starting and stopping of the engine is accomplished in response only to the temperature monitor signals. Disconnect of the operator compartment temperature control is accomplished manually by the operator, usually by actuating the operator controls.

Abstract: A condensate trap for an air conditioning system includes a chamber having an upstream port coupled to the air conditioning system and a downstream port coupled to the external atmosphere, a sealing device disposed in the chamber, a lower seat member positioned in the chamber, and an upper seat member, disposed between the sealing device and upstream port. In response to a positive pressure at the upstream port, the sealing device contacts the lower seat member to prevent air from the air conditioning system from exiting to the external atmosphere. On the other hand, in response to a negative pressure at the upstream port, the sealing device contacts the upper seat member to form a seal which prevents the ingress of air from the external atmosphere into the air conditioning system. Moreover, in response to a predetermined amount of condensate accumulating in the chamber, the sealing device moves out of contact with the seat members to allow the fluid to drain from the downstream port of the chamber.

Abstract: A two-piece blade for use in a scraped surface heat exchanger comprising a larger plastic frame constructed of a plastic material component mixed with a metal component whose presence within a food product is detectable with conventional metal detecting equipment and a smaller metal edge that is substantially self-sharpening and replaceable.

Abstract: An auger-type ice making machine includes an ice making barrel, an auger provided in the ice making barrel, an upper bearing and a lower bearing which are provided inside the ice making barrel for supporting the auger rotatably, and a drive unit for rotating the auger. At the bottom end of the ice making barrel, a connecting flange extending outwardly in the radial direction is formed integrally with the ice making barrel by friction welding. The connecting flange is tightened to the top surface of a casing of the drive unit with bolts. A bearing housing of the lower bearing is fixed in the ice making barrel apart from the casing with a bolt which is screwed in the ice making barrel. The bearing housing of the lower bearing may alternatively be fixed by forming an outward flange and a plurality of projections extending outwardly at the bottom end of the bearing housing and by fitting the plurality of projections in a fitting groove of the casing of the drive unit.

Abstract: An air refrigerant ice forming equipment having formed therein a refrigeration cycle using air as a working medium, said refrigeration cycle comprising a passage for air circulation incorporating an air compressor, a compressed air cooler, an air expander and a heat exchanger for ice formation disposed in the indicated order along the flow of air characterized in that said equipment further comprises a heat exchanger for heat recovery wherein the air before entering the air expander is heat exchanged with the air which has passed through the heat exchanger for ice formation and that said air expander has a rotor caused to rotate by the action of air flowing through said passage for air circulation, a rotating shaft of said rotor is connected via a one-way clutch to a rotating shaft of a motor for driving said air compressor.

Abstract: A heat regenerating type cooling apparatus includes a heat regenerating evaporator encased in a case and provided with a tube for a cooling medium and a heat regenerating pack arranged to be in close contact with the outer surface of the tube of the heat regenerating evaporator. The heat regenerating evaporator conducts a refrigeration cycle while a vehicle is running and cools the heat regenerating pack so as to cause a heat regenerating material within the pack to freeze When the vehicle is parked, a blower is operated to cause a current of air that is cooled by the heat regenerating pack due to heat exchange between the current of air and the frozen heat regenerating material in the heat regenerating pack. The cold air is blown out into an objective cooling area, such as a sleeping area of the vehicle, from a blowing port so that the objective cooling area is air-conditioned, and the upper half of the body of a sleeping person in the area is effectively exposed to air-conditioned air.

Abstract: A pressure relief valve that is rotatable relative to the pressure relief system to allow flexibility in the connection of an outlet aperture in the pressure relief valve with a vent pipe in the building. A circumferential channel being formed on a conduit comprising a portion of the valve to receive a plurality of fasteners thereon for attaching the valve body to the conduit. Further, a tension relief bar having a pair of apertures is utilized to manually control the movement of a valve member relative to a valve seat within the valve body. One of the apertures being positioned for receiving a locking pin therein to hold the valve member apart from the valve seat. The capability to rotate and separate the valve body from the conduit allows for flexibility in servicing and connecting the valve body to the conduit.

Abstract: This invention relates to a gas liquefying method in which a power saving of a compressor for refrigerant can be attained.

Abstract: The present invention is a process for the cryogenic separation of air to recover at least one of its constituent components, which is carried out in an air separation unit having at least one distillation column; wherein the distillation column has at least two mass transfer sections, wherein, in each mass transfer section, a flow of vapor and a flow of liquid are counter-currently contacted to accomplish mass transfer and the flow of vapor or liquid or vapor and liquid is different in one section as compared to the other section; wherein contact of the flows of vapor and liquid in each mass transfer section is accomplished using a structured packing; wherein the structured packing comprises elements which are corrugated with substantially parallel corrugations, wherein the parallel corrugations have a longitudinal axis at an angle .beta. relative to horizontal and wherein each corrugation when approximated to be a triangular cross-section has a crimp angle .alpha.

Abstract: A stream of compressed air is purified in a unit by removal of carbon dioxide and water vapour. The air is cooled by passage through a heat exchanger to a temperature suitable for its rectification. The air is separated in a higher pressure rectifier into oxygen-enriched liquid and nitrogen vapour. A stream of the oxygen-enriched liquid is reduced in pressure and introduced into a phase separator provided with a reboiler with the result that further separation takes place and a liquid further enriched in oxygen and an intermediate vapour are formed. A stream of the further-enriched liquid is separated into oxygen and nitrogen in a lower pressure rectifier. A stream of the intermediate vapour is condensed in a condenser and is introduced into the lower pressure rectifier.

Abstract: The process and the device are used for low-temperature separation of air. A first split stream of compressed and purified air is cooled, fed to a main rectifying system and separated there into liquid oxygen and gaseous nitrogen. A liquid product fraction (for example, oxygen and/or nitrogen) is vaporized in indirect heat exchange with a second split stream of compressed and purified air. The second split stream condenses during indirect heat exchange at least partially. At least a portion of the second split stream, downstream from indirect heat exchange with the liquid product fraction, is used as cooling medium for top cooling of a crude argon column downstream from the main rectifying system. The second split stream makes available all or essentially all the cold needed for liquefaction of crude argon.

Abstract: An article of jewelry adapted to be worn over a human thigh. Included in the article is a substantially closed circlet having a length and flexibility that allows it to be draped loosely around the thigh. Supporting the circlet is a suspension member that is adapted to hang from an undergarment of the wearer. A link member loosely and slidably couples the suspension member to the circlet, allowing the circlet to move smoothly without irritating the skin of the wearer.

Abstract: A washing process control procedure displayed as a mark is read and its content is interpreted. After this, washing processes are automatically controlled in accordance with the interpreted washing process control procedure. As a result, a most suitable washing method can be achieved in accordance with the washing agent used and the garment to be washed.

Abstract: A theft prevention device for vehicles including a vehicle body upon which a vehicle seat is mounted, wherein the vehicle seat includes a seat member and a lumbar support member. The theft prevention device includes an extension member having a first end adapted for attachment to the body of a vehicle and a second end adapted for attachment to the vehicle seat. The extension member is extendable between a first compact length and a second extended length. The theft prevention device is further provided with a locking member coupled to the extension member for selectively locking the extension member at desired lengths. In use, the extension member locks the seat in a forward position preventing a thief from accessing the passenger compartment of the vehicle. The invention also provides a vehicle having a theft prevention device. The vehicle includes a vehicle seat moveable between a first rearward position and a second forward position.

Abstract: In a method and a roll stand for diagonal rolling of medium or thin-walled tube ingots, an inner mandrel rod is held at an inlet side and controllably axially displaceably relative to rolls. In order to avoid a funnel-shaped expansion at the tube ingot end, the rolling product during rolling is rolled in a constriction of the mandrel rod and thereby obtains a thickened wall forming a support of the tube ingot wall against the expansion.

Abstract: A straightening machine for rolled beams, particularly hyper-beams, includes two straightening disks which are mounted on a straightening shaft and rest against the flanges of the beams from the inside, wherein at least one of the two straightening disks is axially displaceable. A support ring is arranged between the straightening disks. The support ring has distributed over the circumference thereof a plurality of hydraulic cylinders. The adjusting pistons of the hydraulic cylinders are connected to the axially displaceable straightening disk.

Abstract: A portable slitter for selectively roll slitting rib forming or perforating sheet metal workpieces and having a beam-type frame, a pair of spaced thin walled and light weight rotary torque tube roll shafts mounted in the frame and supporting the work rolls, and a plurality of pairs of opposed stabilizing support blocks disposed between the shafts and the associated frame beams and providing further strength to the shafts by functioning as intermediate span shaft journal supports carrying the roll work loads imposed on shafts directly into the frame beams. The bearing members can be readily removed and adjusted longitudinally of the shafts without taking the frame apart. The slitter can be readily manually transported to the work site because it has a high strength-to-weight ratio and is light in overall weight. The slitter has substantial operational strength and improved work roll registry and alignment under continuous and/or adverse on-site operating conditions.

Abstract: A method and an arrangement for severing and controlled cooling of individual rods from a rolled section, particularly from a section of preferably high-grade steel which emerges hot from rolling at final speed from the rolling line of a finishing train, wherein the section is divided during its passage through parting shears into cut lengths and wherein a cut length each is conveyed after severing to an annealing strip or an annealing furnace. The rolled section is supplied to parting shears whose knives rotate on both sides of the section in a horizontal plane and which, when severing the section, displace the resulting section ends in the horizontal plane laterally relative to each other by a certain distance.

Abstract: A raft assembly in the roll forming art having a plurality of forming roll stands including a combined horizontal raft plate and first vertical stand formed together in an L-shaped single cast. The first vertical stand supports multiple station pairs of spindles at one end thereof and a plurality of second vertical stands each of which supports the opposite ends of a said pair of spindles on a single roll stand and bolts for attaching the second vertical stands to the raft plate oppositely positioned from said first vertical stand.

Abstract: A method for forming a stainless steel sink bowl having a top edge, a sidewall and a bottom surface interconnected by smooth corner surfaces from a single sheet is provided. The method comprises drawing a stainless steel blank between a first draw die and a first forming die to form a first drawn blank having an unfinished bowl with a length, width and depth which are less than the finished length and width and generating a deformation warmth in the blank at the corner surfaces in proximity to the rim as the first drawn blank is being formed to a temperature of approximately 70.degree. C. to 90.degree. C. The first drawn blank is immediately removed from the first draw die and the first forming die and transferred to a finish draw die.

Abstract: A pressing instrument for pressing bushings, cable lugs, or similar items upon a work piece reveals two tools that can be brought together with the help of a drive mechanism, forming a pressing chamber, with each tool revealing two opposite pressing cheeks, whose pressing surfaces are shaped so that a polygonal shape will result during pressing. In order that work pieces of differing diameter can be processed with the pressing tool, that production costs can be kept comparatively low, and that good operational reliability can be achieved, opposite pressing cheeks (10, 11; 36, 37, 54, 55) of at least one tool (4, 34, 35) can be swung on them so that the other tool (5, 34, 35), as the tools are brought together (4, 5, 34, 35), will run against the swingable pressing cheeks (10, 11, 36, 37, 54, 55) and will swing them out of a starting position into a pressing position forming the pressing chamber.

Abstract: A crimping die is provided for use in a crimping machine for radially crimping the collar of a hose coupling onto the end of a hose. The crimping die includes a die assembly having a plurality of die segments and at least one unitary retention and separator band. The die segments are adapted for arrangement into a circular array about a central axis, with each of the die segments having a radially inner surface forming a section of a common collar bore about the central axis for receipt of the collar of the hose coupling. Each die segment includes a top surface having an arcuate groove formed therein. The groove has a predetermined cross-sectional configuration with an open upper end that is provided with a lesser width than the width of at least a portion of the groove below the upper end. The unitary retention and separator band is constructed of an elastomeric material and has a like plurality of die segment retaining portions and a plurality of spacer portions.

Abstract: A device for repairing a damaged vehicle includes a generally V-shaped base having a first substantially horizontal elongated member and a second substantially horizontal elongated member, which are fixedly attachable to each other at an angle less than 90 degrees. At least a pair of slidably attachable clamps on the first member attach to two locations of a vehicle, and preferably to two pinch weld locations of a unibody. A slidably attachable clamp on the second member attaches to a third location on the vehicle, and preferably to a pinch weld location on a unibody. In one embodiment, the first member and the second member are pivotally attached to one another for varying the angle therebetween.

Abstract: A portable tensiometer to in situ determine below-grade soil moisture potential of earthen soil includes, a) a body having opposing first and second ends and being adapted for complete insertion into earthen soil below grade; b) a porous material provided at the first body end, the porous material at least in part defining a fluid chamber within the body at the first body end, the fluid chamber being fluidically sealed within the body but for the porous material; c) a degassed liquid received within the fluid chamber; d) a pressure transducer mounted in fluid communication with the fluid chamber; e) the body, pressure transducer and degassed liquid having a combined mass; f) a flexible suspension line connected to the body adjacent the second body end, the flexible line being of sufficient strength to gravitationally freely self suspend the combined mass; and c) the combined mass being sufficient to effectively impart hydraulic communication between below-grade earthen soil contacted by the porous material un

Abstract: An apparatus and process for monitoring conditions of a control valve including a valve element operated by a drive controlled by a position controller. A spindle extends into a valve chamber through a dynamic seal and connects the valve element to the drive. The condition of the seal is monitored by measuring start-up time, stopping time and distance travelled. The start-up time relates to the time between application of control current to the position controller and sensing movement of the valve element. The stopping time relates to the interval between application of a second control current to the position controller and sensing the valve element has stopped. The distance travelled relates to distance the valve clement travels during the stopping time. A time difference is determined by subtracting the stopping from the starting time and is calibrated to a seal coefficient of friction. The distance travelled is also calibrated to a seal coefficient of friction.

Abstract: A cam having a front surface and a rear surface to reciprocate a double-headed piston of a compressor twice for every rotation of a drive shaft. A positioner is provided on the front and rear surface of the cam to position the cam on a fixture used for grinding of cam surfaces. The cam surfaces are formed by grinding the front and rear surface of the cam into a convex shape with the cam positioned to the fixture by the positioner. The front cam surface and the rear cam surface have identical shapes and their phases are offset by a predetermined angle with respect to one another. The positioner is arranged at the same position on the front and rear surfaces of the cam with respect to the cam shape.

Abstract: A heavy-duty mechanical/oscillator utilizes a shaft having an endless cam groove in its periphery, and a nut body carried by and slidable along the peripheral portion of the shaft. A roller pin on the nut body, extends into and engages a wall of the endless groove. The roller pin's nose portion is conical, whereby the pin is subjected to oblique loading having both intense radial and lesser axial components. Paired anti-friction roller bearings carried by the nut body in turn rotatably mount the roller pin. The bearings include a primary oblique-loading roller bearing disposed adjacent the nose portion of the roller pin and oriented to counter the intense radial forces and lesser axial forces experienced by the nose portion, and a secondary oblique-loading roller bearing located adjacent the primary bearing and engaged with a tail portion of the roller pin. The secondary roller bearing is oriented to mainly counter radial forces experienced by the nose portion.

Abstract: A feed screw apparatus comprises a fixed member, a feed screw shaft rotatably supported to the fixed member, a nut mounted to the feed screw shaft and a movable member attached to the nut, wherein a force is transferred from the fixed member through the feed screw shaft and the nut, and the device comprises an elastic member elastically deformable in the axial direction and provided with a portion through which a force is transferred. A force can be detected by an elastically deformed amount of the elastic member. Further, an axially expandable and contractable portion is formed by arranging a displacement generator in parallel with the elastic member, and by elastically deforming the elastic member, the precise and fine displacement can be generated. Furthermore, a preload to be applied to balls of the nut is made adjustable by utilizing the axially expandable and contractable portion.

Abstract: A manual braking mechanism is adapted for manually overridable remote conl. The mechanism is disposed in a generally planar region forward of a vehicle's handle bar that does not interfere with the vehicle body or a human vehicle driver. The mechanism includes a base plate releasably clamped to the vehicle's handle bar and a housing fixed on the base plate. A brake cylinder in the housing connects to a control lever swingable on the base plate about a lever axis, and the cylinder's reaction force biases the lever toward a brake releasing position. A link pivots on the plate at the lever axis, has a hinge connection remote from the lever axis and has a carrier closer to the lever axis to the hinge connection. The carrier cammingly rotates the lever as the link swings on the lever axis. The mechanism has a frame whose first leg connects to the base plate at the lever axis and the frame's second leg is releasably clamped to the handle bar.

Abstract: A crank assembly for a bicycle includes a drive plate and an elongated crank arm which are separately formed. The bicycle includes a sprocket with a fixed rotating shaft of a rectangular cross-section. The drive plate has an internal peripheral wall that defines a shaft hole, an inward flange that projects from the inner peripheral wall into the shaft hole in such a manner that the shaft extends through the shaft hole, and several angularly equidistant through-holes around the shaft hole. The crank arm has an end portion with a fastener hole, an annular flange portion which projects horizontally from the end portion and which has a vertical abutting face that abuts on the inward flange of the drive plate, and a rectangular receiving space formed through the flange portion to form a portion of the fastener hole and to receive the shaft. The fastener hole has an outer section with a shape different from that of the rectangular receiving space.

Abstract: Within a rear half of a tractor front housing (1) which includes an internal partition wall (1a) and an open rear end, a fluid-operated first speed cleanse mechanism (12) is disposed and is supported, at its rear side, by a bearing support frame (4) which is in turn supported by the front housing. Within a transmission casing (2) which includes an open front end and is fastened to the rear of the front housing, a second speed change mechanism (15) is disposed and is supported, at its front side, by the support frame. A fluid pump (72) for supplying fluid to the first change mechanism is mounted on the partition wall. The support frame includes therein a fluid passage (162) which is adapted to function as a fluid passage for supplying fluid from a fluid sump within the vehicle body to the pump.

Abstract: In a structure for supporting driving reaction force acting upon a differential housing, a first arm portion on a differential carrier or carrier cover connected to the differential housing and a second arm portion on a front axle bracket fixed to a frame of the vehicle overlap each other in a vertical direction and are coupled to each other by means of a driving reaction force receiving bolt. A shim having a notch for putting the driving reaction force receiving bolt therethrough is inserted between the first arm portion and the second arm portion.

Abstract: A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the body. A number of angularly-spaced arms are integrally formed with the body and depend therefrom. Each arm has an inside surface with a spindle connected thereto and an outer shirttail surface. Each spindle projects generally downwardly and inwardly with respect to its associated arm, has a generally cylindrical upper end portion connected to the associated inside surface, and has an inner sealing surface on the upper end portion. A number of rotary cone cutters equal to the number of arms are each mounted on respective spindles.

Abstract: An adjustable wrench having locked and unlocked conditions is provided. The wrench includes a wrench body including a fixed jaw, and a movable jaw slidably mounted on the wrench body. The wrench body includes first and second contact walls, the second contact wall having a wall cam surface. The wrench also includes an adjuster assembly including a worm gear on the body between the contact walls and threadedly engaged with the movable jaw for moving the movable jaw toward and away from the fixed jaw, and a locking disc disposed between the worm gear and the second contact wall and having a disc cam surface engagable with the wall cam surface of the second contact wall.

Abstract: A tool of the type having a drive stud for receiving and releasing a tool attachment includes an opening in the drive stud and a locking pin movably mounted in the opening. The opening defines upper and lower ends, and the lower end of the opening is located at a portion of the drive stud constructed for insertion into the tool attachment. An actuating member is movably positioned on the drive stud, and the actuating member defines a sliding surface oriented transversely to the pin to engage an upper end of the pin. A first spring biases the sliding surface toward the pin, and a second, weaker spring biases the pin toward the sliding surface. Movement of the actuating member along the longitudinal axis of the drive stud in a selected direction allows the second spring to slide the pin from the engaging to the release positions.

Abstract: A universal socket wrench is provided comprising a housing having an internal chamber which is open at a first end thereof. A bundle of members having relatively large cross-sectional area-to-length ratios is supported in a slidable relationship within the chamber. The first ends of the slidable members are arranged for engagement with a fastener component. The slidable members have a chevron shape and a generally nonuniform cross-sectional area, and are arranged in sets, the outer and inner perimeter of each set having a fragmentary, asymmetrical shape. The slidable members are supported within the housing by outwardly extending flanges on the second ends of the members, which conform to and engage with inset shoulders on the chamber and on the second ends of the members.

Abstract: A parallel, slidable and lockable jaw wrench is disclosed with an over-center locking handle mechanism. The parallel, slidable and lockable jaw wrench has different interchangeable head assemblies adaptable for locking different types of objects depending on the particular head assembly used. Each respective interchangeable head assembly has a horizontally slidable first jaw with a working surface that is adjacent to a working surface of a fixed second jaw that extends from the handle. The slidable first jaw utilizes a plurality of ball bearings disposed within a channel to slide toward and away from the fixed second jaw smoothly. Also, the slidable jaw locks in any spaced apart distance from the first fixed jaw.

Abstract: A machine tool is provided having a spindle mounted for movement in a direction parallel to the spindle axis, the Z direction, and a direction perpendicular to the spindle axis, the X direction. The machine tool includes a machine bed and has means mounted to the machine bed for supporting at least one tool. At least one spindle is rotatably supported on the machine bed and includes a chuck for supporting a workpiece. The machine tool includes means mounting the spindle to the machine bed for movement in the Z direction and for independent movement in the X direction. Accordingly, the workpiece supporting means may be moved proximate to the tool supporting means and the workpiece may be engaged by a tool. The machine tool may further include feeder means for feeding bar stock to the workpiece supporting means so that the bar stock may be engaged by a tool. The machine tool may also include workpiece transfer means for facilitating the transfer of workpieces to and from the workpiece supporting means.

Abstract: An arrangement for cutting the leader of the web in a paper or board machine in the dryer section of the machine by a jet of pressurized water. The web is placed against the drying wire when it is being cut, and the jet is directed at the web from the free side of the web. The water jet pressure used is from about 40 bar to about 400 bar, preferably from about 100 bar to about 350 bar, which is produced by an ordinary pressure washer.

Abstract: A guide apparatus for cutting roofing shingles includes a rigid base plate, substantially rectangular in shape, having a first end wall spaced from a second end wall; a first side wall spaced from a second side wall; a cutting guide pivotally supported on the base plate along the first side wall; and upright guide surfaces mounted for sliding movement on the base plate adjacent to the second side wall. The cutting guide may be fixed at non-perpendicular and perpendicular angles to the long axis of the base plate. A scale having reference markings for cutting shingles at predetermined lengths is mounted along the first side wall. The scale may be utilized to determine points at which the beginning and the end of a cut can occur both easily and accurately. A modification of the invention includes an outward extension of the base plate along the first side wall, the extension having an opening within it, the combination serving as a carrying handle for the guide apparatus.

Abstract: A clamping mechanism is provided for securing a workpiece proximate a power tool on a work surface of the type having a support surface defined thereon and extending generally orthogonal thereto. The clamping mechanism applies a force to the workpiece to secure the workpiece between the clamping mechanism and the support surface. The force applied to the workpiece has a component directed substantially perpendicular to the support surface, and an additional component which is directed substantially parallel to the support surface in a direction away from the power tool to resist pulling forces which are applied by the power tool to the workpiece. Further, in a preferred embodiment of the invention, the clamping mechanism is oriented proximate a work head of the power tool without entering an effective work area of the power tool.

Abstract: A saw tooth for a circular saw for a feller including, in one embodiment, a square saw tooth head having a frusto-pyramidal shape to be mounted on a holder, and the saw tooth head includes seats for receiving inserts. The inserts are provided with cutting tips and cutting edges while a clamp nut retains the inserts against the tooth head. When the edges and tips are worn or damaged from impact, the inserts are first replaced. When the seat of the head is damaged, the tooth can be rotated.

Abstract: A pressure regulating circuit in which the piston of a pneumatic cylinder can attain a balanced condition without requiring any adjustment to a workpiece. In the pressure regulating circuit, the pressure in an oil pressure chamber of a pressure reducing valve equals the pressure in a pressure sensitive oil chamber of a workpiece retention member. The pressure in a pressure sensitive chamber of the pressure reducing valve equals the pressure in the oil pressure chamber. Therefore, the pressure in a piston pressure chamber of a main valve connected to the pressure sensitive chamber equals the pressure in the pressure sensitive oil chamber. When the pressure in a control chamber of the main valve and the pressure in a working chamber of a pneumatic cylinder are respectively balanced with the pressure in the piston pressure chamber, the piston P can attain a balanced condition.

Abstract: A servo valve arrangement with a high-pressure, low-pressure and motor connection and with a pressure control valve arranged between the high-pressure connection and motor connection and a return control valve arranged between the motor connection and low-pressure connection is provided. The pressure control valve normally is closed and the return control valve normally is open. The pressure control valve can be opened by a common actuating member whilst closing the return control valve. The valve arrangement is suitable, in particular, for hydraulic power steering systems of motor vehicles with a so-called closed center.

Abstract: The hinge unit K of a variable capacity swash plate type compressor has support arms protruded to the back side of a rotor on the rotating drive shaft, and guide pins, one end of which is fixed to a rotatable and wobbling swash plate. The support arms have guide holes (guide surfaces) which extend in a predetermined direction having an angle .alpha. with respect to an axis perpendicular to the axis of rotation of the drive shaft. Sections perpendicular to the center lines L.sub.1 of the guide holes are formed into at least a partial circle. A spherical elements of the guide pins are slidably and rotatably engaged with the guide holes of the support arms to be in line contact with the guide surface of the guide holes. The angle .alpha. is set so that the top clearance TC of the respective pistons at both maximum and minimum compression capacities of the compressor is equivalent.

Abstract: A wobble piston usable in a cylinder comprising one or both of the confronting surfaces of wobble piston head or valve plate being convexly curved in the plane of the wobble motion and being straight in a plane that is transverse to the plane of the wobble motion.

Abstract: A swash plate type compressor including double headed pistons, a swash plate, and a drive shaft which is rotatably supported by radial bearings and thrust bearings. A boss on the swash plate has front and rear supporting seats and the cylinder block have front and rear supporting seats in a facing relationship with the front and rear supporting seats of the swash plate. One thrust bearing is rigidly arranged between the facing supporting seats. The other thrust bearing is held between the other facing supporting seats, with a belleville spring arranged between the thrust bearing and the supporting seat of the boss.

Abstract: A vessel for steeping grain having a tank (12). A central column (44) is disposed in the center of the tank (12) having transport lines (42) with air lifts (46) on the lower end of the lines for the transporting of grain and steeping fluid from the bottom of the tank to the top of the tank. Air for the air lifts (46) is introduced to the air lifts along line (50). Air is withdrawn from the tank by line 25 and compressed for the line (50) by air compressor (27).

Abstract: The present invention comprises a system for brewing and dispensing high quality beverages at remote locations comprising a high volume urn, a high volume transfer system, an insulated mobile canister, a dispensing system having a compressor, tank and hose assembly, and a dispensing tap. Coffee, or other brewed beverage, is brewed in the high volume urn. Once a complete batch of coffee has been brewed, the entire batch is transferred via gravity to a clean and empty mobile canister. Once full, the mobile canister can be moved to a remote dispensing location or stored for future use. When the mobile canister is moved to the dispensing location it is connected to the dispensing system which uses an air compressor to pressurize the beverage within mobile canister. The dispensing system also connects the canister to the dispensing tap, via a short, removable dispensing hose.

Abstract: Disclosed is a device for brewing the roasted and ground beans of the coffee used in a vending machine, which comprises a ground beans receptacle for containing the roasted and ground beans of the coffee, a mixing means for mixing the ground beans of the coffee with a hot water, an extracting chamber for providing a space used to extract a coffee liquid, an extracting means for extracting the coffee liquid by jetting a pressurized air against the mixture of the roasted and ground beans and hot water, a filter mechanism arranged below the extracting chamber for filtering the coffee liquid, a reciprocating means for lowering and raising extracting chamber, and a sweeper for removing the residue remaining on the filter mechanism, characterized in that the filter mechanism further comprises a porous filter part for passing pure coffee liquid only, a support part for supporting the filter part not to be distorted by an external pressure, and a buffer arranged between the filter part and the support part for absorb