Abstract: An interchangeable clasp comprising a clasp body having a plurality of interconnecting elements consisting of a spring loaded connector member and a receiving recess. The connector typically comprises a hollow cylindrical sleeve and a rigid rod having an outside diameter less than the inner diameter of the hollow cylindrical sleeve. The rigid rod has a proximal end and an opposite distal end with respect to the hollow cylindrical sleeve. The proximal end is engaged with a spring mechanism within the hollow cylindrical sleeve that biases the distal end of the rod to a distal position and allows for movement of the rod between a proximal and a distal position. The distal end culminates in a head member with exterior dimensions such that the head member is capable of being removably inserted within, and retained by a cap end of the receiving recess. The receiving recess is cylindrical in dimension, has an opening through its outer wall and is capped at opposite ends for engaging the connector.

Abstract: The subject invention provides a method for producing a laminated article and the laminated article resulting from such method which comprises contacting a rigid substrate with a plastic material in a liquid or semi-liquid state, said plastic material being held in place by a gasket or spacer and in contact with a flexible film and maintaining contact between the substrate and plastic material under conditions so that the plastic material hardens and adheres to the substrate to form the article. The invention also concerns a plastic edge piece which may be cast and attached to the exposed edges of the laminated article and which has the same appearance as the plastic laminate.

Abstract: A ball joint used for a steering arrangement or a suspension system of automobiles, comprises a housing having an inner side formed into a polygonal shape; a ball seat having an outer body surface formed as the same polygonal shape as formed in the housing; vertical flanges being formed at a closing portion of the ball seat and spaced apart at intervals corresponding to sides of the polygonal shape, each vertical flange having first and second fixing protrusions formed at an opening portion of the ball seat, and a hook protrusion having a groove formed at an inner surface of a lower portion of each vertical flange; and, a cap having a convex portion at a side and inserted in the vertical flanges so as to be fixed to the vertical flanges.

Abstract: Disclosed is an improvement of the spline used for a mechanical apparatus for transmitting/cutting-off power by using friction discs. The spline includes an internal spline in the form of a semi-circular groove and an external spline with both edges thereof having the same arc, at a predetermined length as that of the internal spline.

Abstract: A discharge flow control system and method of a hydraulic pump driven by an engine for the minimization of the difference between a discharge mount of flow in the pump and total mount of operating oil necessary to operate each actuator in hydraulic equipment. The control system is provided with a detector which detects the number of rotation of the engine, generates equal number of pulses to the number of rotation, a detector which detects the tilt angle of a swash plate of the pump, a detector which detects the operating displacement of the actuator, a detector which detects the load pressure acting on the pump, and a controll unit which controls a target discharge flow mount of the pump which is suitable for performing a predetermined work based on the number of rotation, the tilt angle, the displacement and the load pressure.

Abstract: Disclosed is a manufacture and coating method of mechanical products using ferrous alloy in order to improve wear, corrosion, and heat resistances of the mechanical products which are exposed to friction and wear environments with or without lubricating conditions. The mechanical products of the invention include rotation contact parts such as bush and shaft in the inside of caterpillar roller, mechanical seal under high surface pressure, and drawing dice and plug under sliding friction stress. A ferrous alloy composition used for coating in the invention comprises Cr:18.0-42.0 wt %, Mn: 1.0-3.2 wt %, B:3.0-4.5 wt %, Si: 1.0-3.0 wt %, C: less than 0.3 wt %, inevitably incorporated impurities, and Fe for the rest of content. A ferrous alloy composition used for manufacturing bush type product comprises C: less than 4.5%, Si:2.5%, Mn:less than 2%, Cr:0.5-35%, and Fe for the rest of content.

Abstract: This invention is concerned with an amplifying system with a microprocessor which makes it possible to adjust parameters easily with a simple construction and to perform automatically a simple repeating work without manual operation. The system is also provided with a safety mechanism to prevent system errors, an alarm unit and a display unit to indicate errorneous operations and a failure diagnosis means to detect failure. The microprocessor of the amplifying system operates at least one solenoid proportion valve by producing a control signal consisting either of dither signals of a triangular wave or of pulse signals of a variable duty cycle.

Abstract: Disclosed is a regeneration device used for industrial electric vehicle including a main controller having a microcomputer, a contactor circuit having forward and reverse current paths comprised of a DC choke coil, a battery, and an acceleration switch connected to the batter.

Abstract: A hydraulic system controls a brake system and a suspension system of a wheel-type excavator. The system has a switching section for electrically controlling various systems such as a brake system and a suspension system of the excavator. The system performs various brake functions according to the switching of the switching section. By the system, convenience is provided in handling the switch or operating the systems, and breakage of components which can be happened due to the mis-operation is prevented.

Abstract: Straight travelling apparatus for construction vehicles capable of keeping the construction vehicle travelling straight even when a work implement of the construction vehicle is manipulated during travelling. The apparatus includes hydraulic circuitry for making the hydraulic oil of first and second pumps be supplied to left and right travelling motors respectively when only the left and right travelling motors are operated, and making the oils be confluent together and equally distributed and supplied to the left and right travelling motors when even one work implement is to be manipulated at the same time as operating the left and right travelling motors. The hydraulic circuitry includes left and right directional selecting valves and a confluent line extending between the directional selecting valves for selectively making the hydraulic oil confluent together.

Abstract: A device for effecting myocardial perfusion is described. The described device comprises a plunger or catheter disposed within a capsule having bulbous members having appended thereto slit needles which are capable of perforating myocardium. The plunger is spring loaded and, when activated, causes the slit needles to emerge from the capsule and excise portions of the myocardium, so permitting perfusion at such sites. Perforation of the myocardium may also be affected by means of a laser beam directed through the luminia of the needle. Use of the described device eliminates long post open heart recovery, and permits patients to return to a productive life shortly after surgery.

Abstract: A method for atopy prophylaxis involves administering an agent comprising .gamma.-linolenic acid, dihomo-.gamma.-linolinic acid, the physiologically compatible salts, esters, amides, phospholipids, glycolipids thereof, and/or prostaglandin E.sub.1 (PGE.sub.1), PGE.sub.1 derivatives, PGE.sub.1 analogs to preimmunocompetent humans to prevent the occurrence of atopy. These agents are typically contained in a baby food or are supplied to the baby concurrently. These foods may contain one or more thymus hormones. The use of PGE.sub.1, its derivatives and analogs and the physiologically compatible esters, amides, phospholipids and glycolipids thereof in a pharmacologically effective dosage form for the topical or inhalative treatment of acute manifest atopy in the dermal and mucosal areas. These substances are preferably used in combination with .gamma.-linolinic acid, and dihomo-.gamma.-linolinic acid, and/or the physiologically compatible salts, esters, amides, phospholipids and glycolipids thereof.

Abstract: A process for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The resin powder comprises (i) a thermosetting or thermoplastic resin and (ii) an electrostatic property modifying agent (polyalkylene ether, polyalkylene glycol, polyethoxylated stearyl alcohol) incorporated in the resin or on the surface of the resin. The methods of application of the powder involves charging the powder by electrical induction/conduction and spraying the charged powder onto a grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.

Abstract: A glide block for moving loads, notably furniture, comprising a cup containing an elastomer body that includes a housing for a stud provided with a means for fastening it under a piece of furniture. The glide block is characterized in that the stud and its housing are of matching cylindrical shape in general. The stud is made of essentially non-elastic synthetic material and has side projections capable of being accommodated in lateral offsets of the housing in order to constitute detachable means of assembly.

Abstract: An autogenous heart having a physiology similar to a native heart is formed from two muscle segments which are wrapped about a mold and divided to form four chambers. To form this heart, two segments of muscle are formed to surround a silastic balloon reinforced mold which permits gross formation of the heart. The silastic balloon is then deflated and withdrawn. The interior of the heart is subdivided; the four chambers are formed; and valves are emplaced in much the manner as in the native heart. A cardiac assist device formed from a single chamber is made in much the same manner. The cardiac assist device has a single exit vessel which is bifurcated so as to allow blood flow into the chamber as the muscle is relaxed and blood flow out of the chamber as the muscle is contracted. A further improvement over current cardiac assist devices is the use of a compression ring to occlude blood flow within the native vessel when the muscle is contracted.

Abstract: An engine cooling system with a blade angle controllable cooling fan. The system has a water temperature sensor, a controller and a pitch actuator. The sensor senses a cooling water temperature and outputs a temperature signal. The controller generates a blade angle control signal on the basis of the temperature signal. The pitch actuator is placed in the interior of a hub of the cooling fan and adjusts a blade angle of the cooling fan in response to the blade angle control signal of the controller.

Abstract: A method and apparatus is provided for aspiration of all patients, providing both a rigid suction hollow tube and a flexible suction hollow tube. The apparatus also include a ventilation adapter and a detachable tube for suctioning of liquid and particulate matter, such as meconium, and for intubation. Accordingly, oropharyngeal and nasopharyngeal suctioning of fluids and particulate matter is possible, as well as instillation of fluids and suctioning of the lower passageways, esophagus and stomach. The apparatus also includes a projecting appendage forming an oblique angle with the device, as an inlet port for delivery of oxygen or negative pressure and which can also function as a hook for conveniently hanging the device on a nearby edge.