Abstract: A compact injection assembly for die casting machines is disclosed. The assembly includes a small reservoir or pot for retaining a molten casting metal delivered thereto from a remote source. The assembly includes a cylinder with a piston and shot chamber therein, a nozzle and interconnecting conduit to the shot chamber. The assembly is supported by a single swivel socket arrangement directly below the shot chamber and cylinder. Horizontal outrigger arms are utilized to orient the assembly in its proper vertical position.

Abstract: An improved binder for a foundry aggregate comprising aluminum dihydrogen phosphate in combination with ammonium polyphosphate, potassium polyphosphate, potassium olivine phosphate, volcanic ash, sodium silicate, phosphoric acid or mixtures thereof.

Abstract: The apparatus includes a first triac having terminals to which the control wire of a heater gas inlet valve solenoid or other heating element is connected and the apparatus further includes a second triac to which the control wire of an air conditioner compressor or other cooling element is connected. The triacs are actuated by respective optical coupling devices. One or the other of the optical coupling devices is selected by a switch to indicate whether the heater or air conditioner mode is selected. Whichever optical coupling device, and thus whichever mode, is selected, a timer circuit provides a selectable timing signal to cause the selected optical coupling device to periodically actuate or deactuate the associated triac to thereby activate or deactivate the solenoid or compressor (or other element) associated with the triac.

Abstract: Apparatus for condensing vapors at reduced pressure including a cooled vapor condenser having a liquid level sensor therein with a vacuum pump being connected by way of a control valve for drawing vapor from the vapor chamber of the condenser. The liquid level sensor opens and closes the control valve to control drawing of vapor from the vapor chamber in accordance with the level of liquid in the condenser.

Abstract: A heat exchange assembly is provided which employs concentric flat plate heaters, the heat exchange assembly having a common fixed tube sheet and floating tube sheet; the floating tube sheet comprising two concentric portions having frustoconical interface thereby, the frustoconical interface when projected has its apex in a plane containing the adjacent face of the fixed tube sheet in the axis of generation of the flat plate heater. Thermal stress on the floating tube sheet is thereby relieved. The heat exchanger is useful as a reactor particularly where the temperature profile of the material flowing therethrough is controlled or varied.

Abstract: Disclosed is apparatus for providing for increased heat transfer efficiency f a heat exchanger by separating contiguous fluid conductive channels by means of a flexible sheet fabricated from a piezoelectric polymer. An electrode pattern of predetermined configuration is applied to one or both sides of the piezoelectric sheet and an electrical signal applied thereto in order to set the sheet into a flexual resonance condition whereupon a standing wave pattern is established to not only break up the boundary layer of fluid which adheres to each side of the sheet, but also minimizing the thickness of the laminar sub-layer.

Abstract: A heat exchanger, such as the radiator of a motor vehicle, has a nest of tubes through which liquid flows. To improve heat exchange between the liquid and the tube walls, turbulators (18) are inserted into the tubes to make the liquid flow turbulently. One form of turbulator is U-shaped and has two legs, each of which is inserted into a respective one of the tubes in the nest, via downstream ends (12) thereof. To avoid the liquid flow removing the turbulators from the tubes, stops or projections (19) are provided on either side of the bend in the turbulators. The projections may be moulded integrally with the water box which caps the downstream end of the nest of heat exchange tubes.

Abstract: Device for reducing thermal stresses on a heat exchanger between two counterflow-circulating liquid alkali metal circuits comprising an annular cylindrical nest of tubes surrounding an axial pipe for the introduction of the liquid alkali metal to be heated and extended by an annular pipe for discharging the heated liquid alkali metal, wherein it comprises in the said annular pipe for discharging the heated liquid alkali metal means for radially homogenizing the temperature of the alkali metal, said means comprising pipes which, at the outlet of the nest of tubes, tap a part of the relatively hotter alkali metal flowing along the outer periphery of the annular pipe to bring it into its flow area closest to the axis.

Abstract: A heat exchanger is disclosed comprising a plurality of spaced apart parallel plates having a plurality of apertures therein, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end with the cone members being inserted in the apertures of the plate and being of such relative size to be tightly embraced by the peripheries of the apertures, the opposite ends of the cones in each of the plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate, and means for fixedly securing the plates in parallel relation to bind the cone members in stacked relation.

Abstract: A heat exchanger comprises a plurality of plates arranged adjacent to each other and provided with mutually corssing corrugation patterns of ridges and grooves which form supporting areas in which the plates abut each other. According to the invention, at least some of the heat exchange passages are defined by plates at least one of which has recessed supporting areas, whereby the volume of the passage is reduced.

Abstract: A formation protection valve is normally held in an open position relative to an annular elastomeric valve seat by an inserted wash pipe during performance of a gravel packing operation in a subterranean well. Upon removal of the wash pipe, a valve head swings downwardly to a sealing position on an annular elastomeric valve seat. A valve seat support structure is mounted below the annular valve seat to provide support of the inner periphery of the annular valve seat against downward fluid pressure forces exerted on the valve head. The elastomeric valve seat is shearable by a subsequently inserted tubing string, which also effects the displacement of the valve seat support structure to a radially outwardly disposed position wherein it no longer interferes with the passage of the tubing string therethrough.

Abstract: First means are provided which removably engage an upwardly extending tubular member. Support means for the safety valve sub are pivotally connected to the first means. Means are provided to secure the support means and the first means in axial alignment when the support means is tiltably moved to such position and rotatable means are carried by the support means to rotate the safety valve sub to connect it with an upwardly extending tubular member.

Abstract: A wire line stripper having a tubular body with a deformable or plastic packing element disposed therein for sealingly engaging an elongate flexible member, such as a wire line or a cable, which is longitudinally movable through the body and the packing element, an operator means such as a tubular piston in the body for forcing the packing element at several longitudinally spaced locations resiliently radially inwardly toward the flexible member, and a safety sleeve secured to the stripper and extending thereabove which limits flexure or bending of the flexible member and minimizes abrasion thereof as it moves downwardly into or upwardly from the body. The safety sleeve has an annular outwardly extending flange for protecting members externally connected to the body, such as fittings through which fluid under pressure is admitted into the body to operate the operator means, against damage thereto during installation, removal or operation of the stripper.

Abstract: An improved rotary drilling head assembly comprising a main housing having an axial bore therethrough; a stripper assembly disposed within the housing axial bore; and a stripper support assembly rotatingly supporting the stripper assembly. The stripper support assembly is removably attachable to the main housing and comprises an inner skirt member which is configured to extend about and to be supported on an exterior support surface of the main housing; an outer bearing housing configured to extend about and to be bearingly interconnected to the inner skirt member; a stripper clamp assembly clamping the stripper assembly to the outer bearing housing; and a clamping assembly removably attaching the inner skirt member to the exterior support surface such that the entire stripper support assembly of the drilling head assembly is removable from the housing as a unitary assembly by disengaging the clamping assembly.

Abstract: A packer for a subterranean well has slip elements and elastomeric seal elements which are respectively radially expandable into engagement with a well conduit wherein the packer is mounted in surrounding relationship to an inner sleeve which is rigidly interconnectable to a second conduit. An intermediate sleeve is mounted in axially slidable, concentric relationship to the inner sleeve and cooperates with an outer sleeve to define an annular fluid pressure chamber. A upper piston and a lower piston are mounted in the annular pressure chamber and are driven in opposite directions by application of fluid pressure to such chamber. Compressive forces are thus transmitted to the elastomeric sealing elements and a slip mechanism. The packer also incorporates a hydraulic reservoir which is normally filled with casing fluid and has a constricted orifice connected to the casing annulus.

Abstract: A concentric insulating tubular conduit string, including a separation joint comprising first and second couplings with concentric tubular sleeve members extending therebetween, is disclosed. An insulating conduit incorporating this integral separation joint could be employed for the delivery of a heated fluid, such as steam, through the conduit to the producing formation therebelow. The inner and outer tubular sleeves of the separation joint may be prestressed in tension and compression between axially spaced coupling members used to join the separation joint to the tubular conduit. One sleeve which may be prestressed in tension threadably engages both the upper and lower coupling members. The other sleeve which may be prestressed in compression threadably engages only one of the coupling members and abuts the other coupling member to carry compressive loads.

Abstract: A process and apparatus for recovering oil from an oil-bearing formation which comprises the steps of injecting into the oil-bearing formation a heated aerosol fog of organic chemicals which are soluble in oil, the fog preferably being at an elevated temperature and pressure. The heated aerosol fog penetrates the formation dissolving caked oil and oil trapped within the formation thereby increasing its permeability. The dissolved oil is extracted from the formation along with the injected chemicals and the chemicals are thereafter separated from the oil.

Abstract: Method and apparatus in which a hydrocarbon-bearing well formation penetrated by a borehole is fractured with apparatus located outside the well by injecting gases into the well to elevate the pressure and temperature within the well formation and to maintain the elevated pressure and temperature until the formation is fractured, the apparatus including a gas generator of the type in which a fuel, such as hydrogen peroxide, is decomposed by a catalyst to form high temperature decomposition gases, such as steam and oxygen, and an air compressor for injecting compressed air into the well to aid in raising the pressure within the well formation so as to pack the decomposition gases into the formation and to maintain the raised pressure until the formation is fractured.

Abstract: Specification discloses a process for completing a wellbore into a subterranean reservoir. In completing the wellbore, a completion fluid is pumped into the wellbore casing to displace the mud contained therein, the improvement comprising pumping a spacer system into the wellbore casing before pumping the completion fluid into the wellbore. The spacer system comprises a spacer fluid having a viscosity sufficiently high such that the spacer fluid exists in either laminar or plug flow at normal circulation rates.

Abstract: A hanger and valve assembly which can be employed as a safety valve assembly to close both the production tubing and the tubing-casing annulus in a subterranean well is disclosed. The assembly includes a hydraulically activated, mechanically locked hanger which has slip anchoring members engaging the casing or, exterior conduit for preventing movement in both longitudinal directions. The hanger also has annular packing elements to seal the tubing-casing annulus. An annulus safety valve member employing a longitudinally recessed resilient seal member can be mounted in a landing nipple mounted in the hanger. By recessing the seal it is protected from the turbulent flow through the valve. A second shuttle located in the landing nipple is employed in conjunction with the first annulus safety valve to permit flow in one direction while metering flow in the opposite direction.

Abstract: A method for plugging a well comprises (1) extending two sets of dogs on a bridge plug for engaging the sides of the well by releasing an expandable means, and (2) releasing a high pressure fluid for triggering and releasing the expandable means for extending the two sets of dogs for securing the bridge plug at the desired depth in the well. A bridge plug for carrying out the method is also disclosed.

Abstract: A vehicle fire extinguisher is provided which discharges a copious supply of fire retardant into the engine compartment and in the vicinity of the fuel tank of the vehicle in response to a vehicle crash. The fire retardant deprives the areas of the vehicle most susceptible to fire of oxygen needed for combustion and fire development.

Abstract: A load control device for a working tool of a construction vehicle in which a signal detected by a speed detector or a traction force detector is fed back to produce a deviation signal between said signal and a desired signal. A memory unit has stored a desired value of speed or traction force for each acceleration and outputs the desired signal corresponding to an acceleration signal from an acceleration detector. The working tool is moved up or down according to the deviation signal and, through the feedback mechanism, the load applied to the working tool is automatically controlled so as to enable the construction vehicle to work at maximum work efficiency without operator's efforts.

Abstract: A soil cultivating machine attachment has a row of single tined rotary members. Each rotary member includes a shaft journalled in a hollow box-like frame portion and a lower tine has a holder bolted to the lower end of the shaft. The tine has an operative portion that is curved from its holder so that the majority of that portion co-extends with the center line of the shaft. Each cultivating member can have a single tine that is fastened to the lower shaft end and a supporting part on that end has a face that cooperates with an opposing face of a fastening tine part and a centering member ensures proper fit. The members are removable as separate units together with their bearings, housings, gears and connections, from the top of the hollow frame portion or at least from above the bottom of the frame portion.

Abstract: A harrow mounted on an earthworking tool works the soil adjacent the tool. The harrow has a clamp assembly mounted on the body of a spring earthworking tool. A pair of coil springs are mounted on the clamp assembly. Each coil spring is connected to a downwardly directed earthworking tine.

Abstract: An apparatus to be towed that includes a frame supported, rotatably mounted, pair of furrow forming disks that are arranged to substantially contact each other at the approximate point of entry into the soil and diverge apart rearwardly and upwardly, a pair of rotatable gauge wheels having supports that individually and pivotally connect the wheels to the frame with each wheel being located generally adjacent an outer surface of a disk, a gauge wheel adjustment assembly slidably mounted in said frame and having an equalizer assembly connecting the supports whereby movement of a support and thus wheel in one direction produces the same movement of the other support and wheel in a contrary direction and including an indicator, furrow depth indicating structure having a zero position and spaced indicia for indicating furrow depth and adjustment structure for movably mounting the indicating structure on the frame, and structure for selectively immobilizing the equalizer assembly in a neutral position whereby with

Abstract: An agricultural implement for tilling soil employing three disc gang assemblies pivotally mounted in spaced apart relationship to a support frame assembly having a hitch mechanism associated therewith for coupling to a conventional towing vehicle, the disc gang assemblies being arranged such that the front and rear disc gang assemblies are approximately equidistantly spaced from the center disc gang assembly and are offset laterally from the longitudinal axis of the support frame assembly, each of the disc gang assemblies including a plurality of spaced discing tools positioned such that the lateral working width of the center disc gang assembly is approximately equal to the combined lateral working width of the front and rear disc gang assemblies.

Abstract: A share comprising a cutting blade portion and a mounting portion, and interengaging surfaces on the cutting blade and mounting portions including lands on each portion, each land engaging one surface of the other portion so as to retain the portions together as an assembly.

Abstract: A method of inhibiting the occurrence of differential wall sticking in the rotary drilling of hydrocarbon wells is provided. The yield point of the drilling fluid is measured and if necessary increased in a known manner to a minimum value computed from the weight of the drilling fluid so that solid, substantially spherical glass beads having a specific gravity between 2.4 and 2.65, a diameter between 9.84 and 187 mils, and a hardness of 5.5 Mohs placed therein will not settle, and 10 to 50 ppg of the glass beads are added to a quantity of the drilling fluid. A slug of the glass beads/drilling fluid mixture is then spotted in the well bore adjacent a previously identified zone of possible sticking, so that a substantial number of the glass beads may be deposited in the filter cake lining the well bore adjacent the zone of possible sticking.

Abstract: An electronic scale apparatus which provides weight control information, and a method of controlling weight which employs a scale apparatus. The apparatus comprises a scale member for measuring the weight of a person at a selected point in time. An electrical signal is generated in response to the measured weight. The apparatus further includes a memory for storing weight information. This weight information may include a base weight introduced previously into the memory. The apparatus includes an electronic circuit in which the generated signal is processed so that the weight of the person at the selected point in time can be compared against the base weight. This circuit also enables the calculation of a weight change based on the comparison. A display member is operatively connected to the electronic circuit for displaying the calculated weight and/or percentage of a weight change to a selected goal.

Abstract: A load cell of integral unitary construction wherein strain gages are mounted on the peripheral surface of a solid disc-shaped measuring body and are responsive to shear strain induced in the solid measuring body by an applied load. The load receiving and load cell supporting ends are incorporated into the integral unitary structure.

Abstract: A vehicle propulsion system combines an electric motor-generator and battery with a flywheel as regenerative power sources. A planetary differential gear train couples together the shafts from the flywheel and the motor-generator. A controller connected between the battery and the motor-generator serves to maintain the current level to or from the battery with a range which develops optimum efficiency of battery energy utilization while causing the flywheel to absorb the relatively large peaks in battery power requirements.In one embodiment, the controller is made up of a transistorized chopper, a free-wheeling diode, a regenerative diode, a current sensor, and a switch to change the controller between the motor and generator modes of operation. The motor-generator is a separately excited, DC machine.

Abstract: A three-wheeled cambering vehicle having a rear noncambering module which has a forwardly extending tongue which rotatably supports a main and front cambering module. The cambering module carries the vehicle operator who steers the vehicle by rotating a single front wheel about a substantially vertical axis and additionally leans in response to vehicle turn and his own will, the two modules are rotatable in relation to each other about an inclined camber axis extending longitudinally of the vehicle. The cambering module has cambering controls at a forward portion thereof to allow the operator to physically engage the controls with his feet for cambering the front module relative to the ground and rear modules.

Abstract: A ladder climber's safety device comprises a pair of manually graspable rung engaging members providing sliding latches for engaging the rungs of a ladder. The rung engaging members are connected to the climber's safety belt and are interconnected with one another by a push-pull cable for effecting latching and unlatching of each rung engaging member alternately in response to unlatching and latching of the other member.

Abstract: A device for leveling a ladder is disclosed which comprises a leveler guide with a hollow section which is secured to the lower portion of the ladder, a leveler leg which is sized and shaped to fit within the hollow section of the leveler guide, a plurality of guide openings spaced apart a pre-determined distance extending horizontally through the hollow portion of the leveler guide, a plurality of leg openings spaced apart a pre-determined distance extending horizontally through the leveler leg, and a securing apparatus sized and shaped to fit through the plurality of guide openings and through the plurality of leg openings in order to rigidly secure the device to the ladder.

Abstract: A lift-pad assembly of adjustable height for use on a swing arm of a vehicle lift comprises a platform for contacting and at least partially supporting an undersurface of the vehicle, the platform being vertically adjustable in position while remaining horizontal by mounting it on the arm by means of pivotable support linkages the pivot axes of which are at the vertices of a parallelogram. Vertical positions for the platform other than fully up or fully down are provided by bars which can be interposed at will between the platform and a lower base support by operation of one or more slideable plates.

Abstract: A locking mechanism for the doors of an elevator car which is disabled when the car is within a short distance from a landing but which otherwise permits the doors to be opened by an amount insufficient for a passenger to exit from the car and then locks the doors with respect to further opening movement. In the preferred form, a door carries a notched plate, and a latch bolt on a part of the car which is stationary relative to the door is controlled by an arm engageable with spaced cams in the hoistway so that the bolt will enter the notch of the plate when the car is away from a landing and the doors are partially opened.

Abstract: An improved compression valve mechanism for a shock absorber comprising an upwardly facing annular valve seat on the shock absorber piston, an annular valve seat engaging member having an exterior periphery spaced closely from the interior periphery of the cylindrical shock absorber chamber providing a relatively small annular gap therebetween and a downwardly facing surface adapted to engage the upwardly facing annular valve seat, an annular seal mounted above the annular member in motion transmitting relation therewith, the seal being made of relatively rigid material and being split radially so as to be expandable radially outwardly and having an upwardly and inwardly facing generally frustoconical spring force transmitting surface and a peripheral sealing surface, and a coil spring above the seal having its upper end fixed with respect to the piston and having its lower end disposed in force transmitting relation with the force transmitting frustoconical surface of the seal so that the seal is biased ther

Abstract: A hydraulic shock absorber comprises a cylinder, a piston slidably fitted in the cylinder to divide a space in the cylinder into two hydraulic fluid chambers, a piston rod which is secured at its one end to the piston and extended from said one end passing through one of the two fluid chambers, and projecting out of the cylinder while being slidably supported in a rod guide at one end of the cylinder, a damping force generating members mounted on the piston for throttling a flow of hydraulic fluid between the two fluid chambers, a fluid reservoir communicated to an another of the two fluid chambers and a valve mechanism provided in a channel that communicates said another fluid chamber with the fluid reservoir, the valve mechanism comprising a check valve allowing the hydraulic fluid to flow from the fluid reservoir to said another fluid chamber and a plurality of orifices provided at a plurality of positions in the check valve for throttling the flow of the hydraulic fluid from said another fluid chamber to

Abstract: An improved cushioning or shock absorbing device attachable to the ends of a generally cylindrical container for transporting or storing radioactive material, especially spent nuclear fuel elements, has a substantially uniform dampening or cushioning characteristic even for different impact directions. The device is cap-shaped, having an annular part with a plug part in the outer end thereof. The annular part includes a strong rigid inner sleeve extending from the open end of the device partly between the two parts. The inner end of the plug part has a sheet metal disc-like inner cover secured to the sleeve for detachment on impact. Both parts are divided into a plurality of interior chambers by sheet metal plates, the chambers being filled with cushioning material.

Abstract: A torque converter clutch is provided with a temperature responsive valve which controls fluid flow from the apply chamber to the release chamber which is connected to exhaust. The increased fluid flow provides additional cooling for a viscous clutch which is included in the torque converter clutch.

Abstract: A friction clutch assembly incorporates a pressed steel cover member 11 having an annular pressure plate 13 arranged within a recess 12 in the cover 11. Drive straps 21 connect lugs 17 of the pressure plate to the cover and allow relative axial movement between cover and pressure plate. A diaphragm spring 22 provides a clutch clamping load tending to urge the pressure plate out of the recess in the cover. Stops 23, integral with the cover and set back from the mounting flange 14 of the cover, are arranged to engage directly the lugs 17 of the pressure plate to prevent excess movement of the pressure plate which could deflect the drive straps 21 excessively.

Abstract: A lock unit incorporates an improved coin counter or mechanism adapted to selectively accommodate the lock unit for operation by one or more coins of a given denomination.

Abstract: A device for performing the change of a pallet between a pallet support and a machine tool. The device has a pallet holding structure for holding a pallet while the change of a pallet is carried out, and a pallet transferring structure for transferring the pallet holding structure when that structure is holding a pallet to be changed between the pallet support and the machine tool. The pallet transferring structure is mounted on one of the two lateral movement elements of the machine tool so that the pallet transferring structure is operated in association with the movements of the two lateral movement elements of the machine tool.

Abstract: Apparatus and process for forming setting layers comprised of separated cross rows of brick blanks. Closed row layers of brick blanks are fed to a stop point where they are lifted above a conveyor provided to move the blanks from a start point to a tapping position. When the closed rows are lifted a portion at the lead end are isolated on a plurality of lifting elements so that this portion can be redeposited sequentially by cross row or by groups of cross rows to form the separated setting layer.

Abstract: An apparatus is disclosed for unhooking and transferring hung articles, such as cuts of meat, from haulage vehicles to sorting and warehousing installations. The apparatus includes a gripping mechanism movable in three respectively orthogonal directions. The gripping mechanism is adapted to withdraw the articles from the hooks on which they are initially hung, and to transfer and re-hang them upon other hooks. The gripping mechanism includes two symmetrically arranged gripping elements. These elements are movable with respect to each other from a first working position at which their respective free extremities are in contact, to a second working position in which the elements are separated by a distance which allows insertion of one of the hooks between them or removal of previously inserted hook.

Abstract: The invention provides an improved autoclavable system for packaging of intraocular lens structures. In one embodied form, the inventive system comprises an outer container having at least two optically clear windows arranged in parallel relationship, an inner holding fixture mounted within the outer container for receiving and supporting an intraocular lens structure in alignment with the windows and a liquid medium within the container which substantially duplicates optical transmission characteristics of fluid in the eye. The unique packaging system provides an autoclavable sterile environment for a wide variety of intraocular lens structures prior to implantation which permits visual inspection and measurement of important optical parameters of the lens structure without removal of the lens from the container.

Abstract: A cover for multiple unit container packages of containers secured by at least one clip device having a central opening wherein the cover includes a tab device extending through the clip opening and engaging clip bottom surfaces to hold the cover in place on the top of the multiple unit package.

Abstract: A molded container for displaying an article comprises a pair of recessed panels that hingably close along a rib portion at the upper ends thereof to form a compartment and to define an opening at the lower end of the container in communication with the compartment through which a portion of the article displayed within the compartment can extend. The container also includes closure means for releasably securing the recessed panels in the closed position to hold the article therebetween.

Abstract: A combined cassette receptacle and article storage device for a motor vehicle including an article storage compartment having an open side, a lid mounted to said compartment for opening and closing said open side, and a cassette receptacle member interposed between the lid and the compartment with a hinge mechanism pivotally mounting both the lid and the cassette receptacle for pivotal movement relative to the storage compartment. A locking or latch mechanism enables the lid to be raised independently of the cassette receptacle member to enable access to cassettes stored in the cassette receptacle member, with the latch mechanism also enabling both the lid and the cassette receptacle member to be pivoted simultaneously to open the article storage compartment.