Abstract: A unique, high-grade magnetite obtained from fly ash, the use thereof in the cleaning of coal, and low iron content fly ash.

Abstract: The invention relates to a new implant material of ceramic material for use in dentistry and medicine for replacing hard tissue, such as dental elements and bones. In order that the material may have sufficient strength characteristics, in particular tensile and bending strength, there is provided a compression element with which the ceramic material, preferably sintered hydroxylapatite, can be brought under compression.

Abstract: A biologically active glass and class-ceramic composition useful for making surgical and dental implants comprising, by mol %,:______________________________________ SiO.sub.2 35.about.60 B.sub.2 O.sub.3 5.about.15 Na.sub.2 O 10.about. 30 CaO 5.about. 40 TiO.sub.2 0.5.about. 10 P.sub.2 O.sub.5 0.about. 15 K.sub.2 O 0.about. 20 Li.sub.2 O 0.about. 10 MgO 0.about. 5 Al.sub.2 O.sub.3 + ZrO.sub.2 + Nb.sub.2 O.sub.5 0.about. 8 La.sub.2 O.sub.3 + Ta.sub.2 O.sub.5 + Y.sub.2 O.sub.3 0.about.8 and F.sub.2 0.about.15.

Abstract: A protrusio cup comprising an acetabular cup and a protrusio shell mounted on the acetabular cup so that the protrusio cup can be implanted as a unit. The protrusio shell has three flanges for engaging the ilium, ischium and pubis, respectively. The acetabular cup has an extension in at least the superior-posterior region to reduce the likelihood of dislocation.

Abstract: An intraocular lens assembly for permanent implantation into either an anterior or posterior chamber of an aphakic human eye is provided. The lens assembly includes four haptic positioners connected around the periphery of a lens body to maintain the lens body in its desired position in the eye.

Abstract: A self-inflating bedpan having means for readily, manually inflating the bedpan after it is positioned beneath a patient.

Abstract: The invention concerns a support device for helping a person to get out of a bathtub.According to the invention, the device includes at least one jack (11) for water supply and at least one handle (13) set in motion by said jack which can be lifted when the jack is supplied under pressure between a first low position for which the person resting in the bathtub can take hold of the handle and hang onto it and a second high position for which the person is more or less aided and supported by the handle.The invention concerns especially aid to old or handicapped persons.

Abstract: A folding bed frame for sofa-beds in which a plurality of frame sections, including a foot section, knee section, body section and head section are pivoted in end-to-end relation so as to be foldable between an extended bed-forming position and a retracted sofa seat-forming position; wherein front and rear support and guiding link assemblies coact to control movements of the body section and head section during movements to the extended bed-forming position and to the retracted sofa seat-forming position. The link assemblies are supported by a pivoted front anchor link and a rear rocker lever anchor link, which are interconnected by a control link.

Abstract: A method of articulating a work support surface in a machine by attaching the work support surface to a support arm; journalling the support arm through a first axis which is arranged in a pair of parallel slots in a pair of frame members secured to the machine and then arranging a toggle linkage between the first axis and a second fixed axis secured to the frames, whereby reciprocation of an elongated member attached to said first axis causes said support surface to move rearwardly as said support arm thereattached is supportively moved between said frame members.

Abstract: A carpet cleaning device having brush rollers which extend cantilevered on both sides of their point of drive and are plug-engaged in head pieces rotating on a shaft, the head pieces being extended by coupling bushings which engage at their free end, by means of coupling claws, into mating claws of the hub of a drive gear which turns on the shaft.

Abstract: An apparatus for continuous dehydration of a cloth comprising two pairs of rubber rolls with the rolls of each pair pressed against one another, a cylindrical seal plate which is positioned between the two pairs of the rubber rolls in pressure contact with each of the rubber rolls and provided with a pair of axially extending slits opening in the direction toward each of the contact surfaces of the pairs of the rubber rolls, and an end plane seal plate blocking the both end openings of the seal plate and contact with the end plane of each of the rubber rolls so as to form a closed chamber intercepting the interior of the cylindrical seal plate from the exterior thereof.

Abstract: The invention is directed to a soot blower for cleaning the interior surfaces of a boiler by discharging a suitable cleaning fluid from a nozzle against such surfaces. The soot blower includes a novel drive system operable both as the horizontal drive for the traveling carriage of the soot blower and as an independently controllable rotary drive for rotating the lance tube of the soot blower. The horizontal drive for the traveling carriage is associated with a motor means whereby operation of the motor means energizes the horizontal drive to advance and retract along a predetermined horizontal path of travel. The rotary drive for rotating the lance tube is mounted on the traveling carriage and is mechanically coupled to the motor means through the horizontal drive whereby operation of the motor provides a driving input for the rotary drive.

Abstract: An automatic wall cleaning machine includes a suction device having plural elastic suction leaves having a trapezoidal plane view and a tapered shaped sectional view which are mounted on a peripheral part of a disc so as to contact adjacent side surfaces of said suction leaves; a suction pipe and a blower for forming a vacuum space surrounded by said disc, said suction leaves and a part of a wall; and a rotary brush with a water sprayer.

Abstract: A simplified and more convenient cleaning head for a wall washing machine includes a shell adapted for holding in the hand or mounting at one end of an elongated wand and also adapted to receive cleaning and rinse fluid lines contained in a vacuum hose attached to the shell. A fluid distribution manifold having a hinged connection in one end of the shell receives cleaning and rinsing fluids from a fluid switching valve in the shell and also serves to securely retain a replaceable sponge insert within the shell without the necessity of employing other fastening means for the sponge insert.

Abstract: A vacuum cleaner housing having a covering which cushions the side surfaces of the housing and is formed by a wall of semi-rigid material of a cap placed over the housing, the wall extending in self-supporting manner at a distance from the housing side walls, the cap being supported for longitudinal displacement in spaced position by a supporting rib. In this way effective protection against impact is obtained by simple means.

Abstract: A vacuum cleaner nozzle lift device for adjustably raising the front portion of the nozzle. The device includes a U-shaped front wheel assembly including a support having a rear bight pivotally mounted to the nozzle housing, a pair of forwardly extending legs, and wheels rotatably carried on the forward distal end portions of the legs. The front wheel height adjuster includes a lifter slidably embracing a leg of the support forwardly of the bight, the lifter being mounted to a rear portion of the housing adjacent the bight, a cam follower movable with the lifter, and a cam movably carried by the housing for camming engagement with the cam follower. A user-operated foot pedal selectively moves the cam against the cam follower for correspondingly swinging the support about the axis of the bight to selectively raise and lower the front wheels and thereby adjust the angular disposition of the nozzle housing relative to the subjacent surface.

Abstract: A resuable tubular casing is made of porous polytetrafluoroethylene (PTFE) membrane for the production of caseless (skinless) parboil or raw sausages. The membrane has a micro-structure comprising PTFE nodes connected by PTFE fibrils with a porosity of about 70-80%, a Gurley No. less than about 28 seconds, a Bubble Point Pressure greater than about 13, and a Water Entry Pressure greater than about 40 psig. The casing is contacted on at least a part of its circumferential area by a porous support such as a cylindrical lattice. A new process for production of parboil or raw sausage involves heating the sausage in casing formed by a reusable non-adherent, vapor permeable membrane to drive off moisture and other volatile materials, and removing the sausage from the casing. The sausage can subsequently be smoked and the casing reused.

Abstract: An apparatus for tenderizing meat has a movable head member with closely-spaced, independently force-limited cutting elements positioned over a conveyor belt for severing the meat fibers with orthogonally oriented cuts as the meat is successively positioned by longitudinal and lateral movements of the conveyor belt. The cutting elements are secured in position by magnets exerting a predetermined force. When the resistance encountered in the meat exceeds this force, the cutting elements will be pushed back into the movable head member, thereby protecting them from damage.

Abstract: A meat tenderizing machine formed of a pair of spaced parallel surfaces moving in the same direction but with one surface moving at a speed differing from the other with ribs extending crosswise in longitudinally spaced apart relation from the surfaces for engagement with the meat during passage between the surfaces whereby the meat is stretched during passage between said surfaces while in engagement with said ribs.

Abstract: A method of stuffing food product into controllably premoisturized shirred casing using a stuffing machine designed for use with more pliable, fully soaked casing. An internal sizing ring is used to prestretch the premoisturized casing to about its recommended stuffed circumference which significantly reduces stuffing pressure while still achieving the desired stuffed size. The magnitude of the holdback force, and thereby the stuffing pressure, is adjusted by setting the distance between the sizing ring which stretches the casing and a sealing ring which prevents back flow of meat emulsion onto the stuffing horn.

Abstract: A bridge top stop for slide fasteners comprising: a body including a sidewall inwardly curved to define a substantially inverted U-shaped opening and a pair of plates connected at one edge by the sidewall, each of the plates including a pair of laterally spaced first and second wing portions extending away from said opening and forming in confronting pair together with the sidewall a pair of grooves for receiving therein the reinforced edges, respectively; a bulged rib projecting from the sidewall into the opening and extending longitudinally along the sidewall; and ridges disposed on the respective free ends of the wing portions and extending longitudinally along the grooves respectively for clamping engagement with the stringer tapes.

Abstract: A device for locking together two stacked objects, each having a plate with an opening, the plates being in superposed relation and the openings being in registry. The device includes a housing, the top wall of which is the plate of the lower object. A bolt, movable vertically and rotatably within the housing, having a head piece shaped to pass through the plate openings when the bolt is in a first angular orientation but not when the bolt is in a second angular orientation. A structural unit, movable vertically with the bolt and rotatable with respect to it, has a supporting shoulder which does not engage a support surface in the housing when the unit is in a first angular orientation but does engage the surface when the bolt is in a second angular orientation.

Abstract: Clasp for garments, in particular furs, which includes an eye element and a hook element having a base plate to be fixed to the garment, a positioning web and a locking web. The hook element is made in a single piece. Also the hook element is provided with a hold-down arm which holds the hooked-in eye down against the positioning web or the locking web (depending on the load applied or the direction of force) and which is elastically movable in a direction normal to the base plate for hooking the eye in or out.

Abstract: The invention contemplates a technique and machine for completing the assembly of a turbine-rotor stage by precision-peening blade tenons to secure shroud segments to successive blades. In the machine, a turbine-rotor assembly of multiple stages of blades on a rotor shaft is mounted on a horizontal axis, with provision for indexing successive blade tenons of a given-stage into precise horizontal confrontation with tool elements successively presented to the tenon, the tool elements being independently mounted to a compound-axis slide system. A presser foot carried by the slide system locally holds the shroud segment to a seated position against the blade to be secured, while first an induction-heating element and then a riveting tool perform in programmed sequence upon the exposed end of the involved tenon.

Abstract: In a non-machining method for manufacturing a solid-bottomed or internally flanged bearing race, especially for rolling contact bearings, the starting material is in the form of a band. For the economical manufacture of this bearing race with an annular groove of extremely precise cross-sectional shape which reduces the wall thickness of the bearing race, and which is situated at the transition from the bottom or flange portion to the race portion, a flat roundel is first stamped from the band. Then a concentric annular groove is worked into one of the planar surfaces of the roundel, while the opposite planar surface thereof is supported on a planar supporting surface. Lastly, the roundel is deep-drawn in a die to form a bearing race having a solid bottom. The end face of the drawing punch concentrically engages the roundel's planar surface that is encompassed by the annular groove.

Abstract: A bored thrust bearing having a bearing face formed in series with tapered lands for forming a thrust load-carrying oil film, each tapered land being formed with a foot surface having a given sloping angle (.beta.) and an upper surface having a gentle sloping angle (.alpha.) less than the given sloping angle, the foot surface and the upper surface having therebetween a rounded boundary.

Abstract: A method and apparatus for manufacturing heat exchangers for cooling and heating purposes from substantially rectangular tube elements alternating with surface-enlarging members in the form of thin pleated metal strips being advanced, pressed against each other, through a heating zone for soldering together and thereafter discharged through a cooling zone for cooling the solder to fusion temperature, the advancing movement being opposed by a constant retarding force means acting in a direction counter to the direction of advance.

Abstract: The heat exchange tube has a porous thermal shock resistant outer shell composed of a corrosion resistant ceramic material that may have a finned outer surface or a plain cylindrical outer surface. The outer shell contains an inner tube composed of a dense nonporous ceramic which is capable of containing high pressure gases, but which may not be as thermally shock resistant or corrosion resistant as the outer shell. The inner tube is formed of a dense ceramic material such as a highly dense silicon carbide or silicon nitride having at each end a like density insert. The end inserts provide sealing surfaces to contact other components in the heat exchanger such as identical ceramic tube assemblies to form a gas-type pressure seal. The inner tube can be fabricated by a deposition technique suh as a chemical or physical vapor deposition, and alternatively, can be made separately and press fitted into the outer shell or the outer shell can be cast or otherwise formed around the inner tube.

Abstract: A portable power operated apparatus that may be positioned adjacent a first stack of lengths of oil well tubing having collars screwed on first ends thereof. The lengths of tubing are subsequently removed from the first stack onto the apparatus. Each length of tubing after being disposed on the apparatus is power rotated with the collar being removably held stationary relative to the tubing to separate the collar therefrom. The collar after removal is inspected, and if found satisfactory for further use is directed to the rearward end of the apparatus. The collar at the rearward end of the apparatus is removably gripped in a reverse position and screwed onto the second end of the tubing by rotating the latter. The length of tubing with collar attached is then lifted by the apparatus and moved to a second stack of tubing where it remains until again needed.

Abstract: A retainer for the parts of the interior assembly of sliding automotive universal joints, for example, of the tripod type constituted, of a splined hub with trunnions which support rollers with interposed bearing means, such as needle bearings. The retainer (1) is a flat slitted ring (2) made of a slightly elastically deformable material and has regularly spaced open seats (L) for receiving rollers (12), and holder (6,7) to retain the rollers (12) and needle bearings (13) in position on the trunnions (11) of the interior assembly of the universal joint.

Abstract: A method and apparatus for dismounting a trunnion bearing from a universal joint utilizes a plate that is secured to the proximal arm of one yoke of the joint through which dismounting bolts are threaded into contact with the other joint yoke. Further threading of the dismounting bolts into the plate causes the one yoke secured to the plate to move along a pin of a crossed-pin member of the universal joint, bringing a pin end into contact with the trunnion bearing in the distal arm of the one yoke, thereby urging it out from its press-fitted position in that arm.

Abstract: A process for inserting points (38) on a mandrel (36) and a machine for performing this process. A working head (40) simultaneously ensures the insertion of a point and the making of a perforation (112) in the mandrel by means of a punch (94). The perforation is made in the same longitudinal row as the inserted point and towards the front with respect to the latter, in such a way that it is subsequently possible to guide a point following a rotation of one or more turns of the mandrel. The invention is applicable to the production of members or bodies of revolution made from three-dimensional material.

Abstract: A method of making a tape guide pin or sleeve adapted to directly engage the back of recording tape or the like, comprises applying a surface layer of a nonmagnetic hard material on a base body of nonmagnetic material and then forming microscopic tips on the circumferential surface of the hard-surfacing layer such that the pattern of the microscopic tips extend substantially linearly in the transverse direction to the axial dimension of the pin or sleeve. These tips are then fine-finished and thereby rounded. The tape guide has improved wear-resistance and frictional characteristics by comparison with even tape guides free from the surface roughening formed by the microscopic tips.

Abstract: Removal of tightly encircling bands from coiled strips is accomplished by transversely engaging a spaced pair of pinch rolls against the band on a coil and then severing the band therebetween and moving one pinch roll into engagement with the other pinch roll to pinch the severed band end therebetween, and at least one roll is driven to feed the pinched band outwardly away from the coil into a scrap chopper. The device used for severing the band is provided with a band shear which is movable along a track that runs transverse to the band. The shear is driven along the track to lodge a sharp leading edge thereof under the band and the shear is then actuated to sever the band, and thereafter the band severing means is removed from between the pinch rolls.

Abstract: An arrangement in a revolving press for withdrawing or inserting a tool holder carrying a punch from and into an opening in a turntable of the press when the tool holder turns with the turntable to an exchange position. The tool holder is in the exchange position temporarily held by a slide engaging a tool holder head projecting upwardly from the tool holder. A guide member substantially aligned with the axis of the tool holder in the exchange position carries at its lower end a gripping claw in such a manner that when the guide member is lowered while the slide is withdrawn, the claw will engage the tool holder head. Thereafter the guide member is raised, moving the tool holder out of the opening in the turntable and finally the tool holder is manually removed from the guide member so that a new punch can be mounted thereon, whereafter the tool holder is moved in reverse direction back into the opening of the turntable.

Abstract: Disclosed is a method of fabricating semi-conductor devices comprising the steps of: forming non-singlecrystalline semiconductor layer on a singlecrystalline insulation substrate, ion-implanting selectively material, which reacts with the semi-conductor layer to form insulating material, into the semiconductor layer; and applying an energy radiation or a heat treatment to the semiconductor layer, whereby the non-singlecrystalline semiconductor layer portion not implanted with said material is singlecrystallized with a seed of the singlecrystalline insulation substrate and at the same time the non-singlecrystalline semiconductor layer portion implanted with the material is rendered insulated.

Abstract: The invention provides a unique sub-micron dimensioned NPN type transistor and method of making the same wherein hundreds of such transistors may be fabricated on a single chip with each transistor comprising an active region surrounded by field oxide completely isolating it from the substrate and its effects on operation. Slots made in the substrate permit angle evaporation of etch-resist to protect the active region while it is disconnected from the substrate by etching therebeneath via the slots.

Abstract: During the manufacture of Josephson superconducting devices, it is necessary to provide on a substrate a base electrode, a counter electrode and a small tunnel barrier area therebetween. A novel method of making all three of these active elements in the same vacuum chamber without having to remove the substrate from the vacuum chamber is provided so that the tunnel barrier area is accurately made to a predetermined size and without the danger of contamination. The novel structure is made as a substantially planarized laminate in the vacuum chamber and the tunnel barrier area is defined in a supplemental step.

Abstract: A semiconductor device in which a silicon pellet is mounted on a ceramic substrate by means of a glass material of low melting point. To prevent the silicon pellet from being destroyed under thermal stress, the pellet is bonded to the glass material of low melting point through interposition of an adhesion reinforcing film such as an aluminium film capable of exhibiting a good wettability and a great bonding strength.

Abstract: A hybrid integrated circuit package (11) typically includes a circuit substrate or article (12) on which are formed thin film components (17, 18, 19) of a circuit (22) and to which is bonded at least one semiconductor chip (21). Prior to bonding the chip (21) to the article (12) the circuit (22) undergoes various tests and adjustment operations. An electric element, preferably a resistance element (36), is formed on the article (12). The element (36) is functionally independent of the circuit (22) on the article (12). A first, initial value of the element (36) marks the article (12) as belonging to a first group of articles having first circuit characteristics. The initial value of the element (36) is selectively altered to a second value upon a determination that the article (12) has circuit characteristics other than those of the first group. In the described preferred embodiment the first group is a group of electrically acceptable articles (12), while other characteristics are those of defective articles.

Abstract: A method of preliminarily bending ends of windings in an armature assembly having at least two layers provides an armature assembly for a dynamoelectric machine that does not require a layer of insulation between terminal portions of conductive windings between the armature lamination assembly and the commutator. The preliminary operations may also include trimming of the free ends of the terminal portions of windings, so that a substantially, fully machined commutator assembly may be used, providing improved electrical contact during a resistance welding or brazing step for affixing the ends of the windings to respective commutator segments. The commutator segments may be manufactured without riser portions, resulting in a less costly assembly which is less susceptible to damage during handling during assembly.

Abstract: A safety blow-out vent closure for galvanic cells, such as nonaqueous oxyhalide cells, which comprises the employment of a conductive tubular member secured to the cell's housing and surrounding a vent orifice in the cell's housing and wherein a deformable member is force-fitted in said vent orifice and adapted to at least partially be ejected from the vent orifice upon the build up of a predetermined internal gas pressure within the cell. The invention is also directed to a method for assembling an electrochemical cell with the above-described safety vent closure.

Abstract: An electronic parts mounting apparatus using a band carrier for feeding electronic parts incrementally, the carrier being a strip having many recesses disposed at equal intervals each holding an electronic part and a tape covering the recesses. The apparatus has a support for horizontally supporting the carrier with the coating tape on the top side; a separator for separating the tape from the carrier; and a pickup device for picking up the electronic parts one by one from the recesses in the carrier and by carrying the electronic parts and placing them in position on a circuit board for continuously and stably mounting the electronic parts on the circuit board.

Abstract: A fastener slider holding device comprising a slider holder having a slider mount on the top and a pull tab receiving recess in one side thereof, a spring-loaded sliding member mounted in the slider holder for vertical movement, a slider holding lever having an engaging pawl at the upper end thereof for engaging the pull tab of a fastener slider, an operation rod for moving the sliding member vertically and cam means for moving the slider holding lever between the pull tab engaging and disengaging positions.

Abstract: An elongated platform supports the web and chord components forming a truss joist when assembled thereon to be joined by truss plates. The truss plates, when positioned at the respective juncture of the chords and webs, are pressed into place by a gantry-type power driven drum apparatus extending transversely of and supported by the platform when progressively moved longitudinally of the platform. Discharge rollers normally disposed below the upper limit of the platform lift the finished truss for movement off the platform.

Abstract: An integrated circuit package in which integrated circuit (I.C.) chips having flexible beam leads, the inner lead bond sites of which are bonded to input/output (I/O) terminals on the active faces of the chips, are mounted active face down on a surface of a substrate. The surface of the substrate is provided with chip sites and outer lead (OL) pads associated with each chip site. A preform of a fiber glass web coated with a thermosetting plastic is positioned on each chip site between a chip site and the active face of the I.C. chip. The plastic material of the preforms encapsulates the active faces of the chips, including a portion of each of the leads proximate a chip, and secures each chip to its chip site. The outer lead bond sites of the leads are bonded to OL pads of the substrate with the exposed portions of the leads between the OL pads and the encapsulated portion being bent away from the substrate and under compression.

Abstract: Process for locating solder on a precalculated position on an electrical terminal. Metal strip stock coated with a thin layer of solder is fed through a strip guide for precisely positioning the metal strip stock between a pair of rollers. A solder wire is cold bonded to the metal strip stock and the strip stock is subsequently stamped into a terminal.

Abstract: A hand tool comprising elements for clamping a conduit or cable to be cut, a saw blade supporting assembly pivotally connected to the clamping elements, in a manner to guide the saw in its desired cutting path, and means for causing sawing movement of the saw blade, the saw blade supporting assembly and the clamping elements being so juxtaposed that they can be gripped by one hand of the tool operator to cause both gripping of the work and advancement of the saw blade in its cutting position; the other hand of the operator being available to effect cutting movement of the saw blade.

Abstract: A hand-held lightweight power tool particularly for severing lead caning used in the making of stained glass work is disclosed. The tool embodies a vibrator which produces rapid angular oscillation of a shaft on its longitudinal axis, the leading end of the shaft carrying a severing blade whose cutting edge is across the axis of the shaft. The amplitude of vibration of the blade can be varied.

Abstract: Gauge for the dimensional checking of a piece being machined, comprising a movable gauging arm fixed to an outer casing, through a pin and a bushing. A spring coupled to the arm and to the outer casing acts on the pin and the bushing for univocally defining an axis, stationary with respect to the casing, for the rotation of the gauging arm.