Abstract: An instrument for setting wound clamps consists of first and second parts detachably connected by means of a first connection. The first part, which is a disposable part, receives a magazine containing wound clamps, and tools for deforming and implanting the wound clamps. The second part has handles for operating the tools. When the instrument is being operated, forces are generated which may cause the two parts of the instrument to become separated. A second connection between the two parts of the instrument, which connection is only effective during the operation of the instrument is, therefore, provided.

Abstract: A furnace bottom structure of a direct current electric furnace has at least one furnace bottom electrode and at least one gas injection tuyere provided in the furnace bottom refractory of the direct current electric furnace. Preferably, the furnace bottom electrodes and the gas injection tuyere are embedded in a substantially cylindrical refractory body with downwardly diverging tapered upper portion. The refractory body, the furnace bottom electrodes and the gas injection tuyere form an integral furnace bottom block which is detachably attached to the bottom of the electric furnace so as to close a bottom opening of the furnace.

Abstract: A method of making a semiconductor-mounting substrate suitable for high density packaging and the substrate so made. In order to package an electron part having many terminals to be mounted in a high density, the substrate is constructed by using a lead frame comprised of a die pad and leads as a base, forming an adhesive layer or further an insulating layer onto the lead frame, forming a conductor circuit thereon by an additive process and connecting the conductor circuit and the leads to each other through a plated conductor. According to this construction, it is not required to provide a printed circuit board for IC mounting, and IC can directly be mounted onto the lead frame through the plated conductor circuit.

Abstract: This invention relates to shields for protecting a civil engineering work from the destructive effects of earthquakes. A shield according to the invention comprises a plurality of individual islands which are implanted in the ground around the work to be protected and which present mechanical properties different from those of the ground in order to attenuate the seismic surface waves. The islands may be masses of ground compressed between an anchoring means driving in the ground and a sole placed on the ground and connected to the anchoring means by a connecting means under tension. The islands may also be bores or wells filled with granular or pulverulent materials. One application of the invention is the protection of industrial plants or dwellings in order to avoid destruction thereof by earthquakes.

Abstract: A shaft is supported in a housing by single row, deep-groove, radial ball bearings having diametral clearances which will permit axial displacement between their inner and outer races, abutment faces which are located with respect to the shaft and housing respectively engage the inner and outer races respectively of the bearings so as to take up play which results from the diametral clearances, abutment elements which engage the respective inner races can coact with the housing as a result of increase in the aforesaid axial displacements, to provide a braking effect between the shaft and the housing.

Abstract: An electric locker apparatus with a plurality of locker boxes each having an electric lock device including a latch member normally maintained by a stopper member in a lock position in engagement with the door of the box, and biased toward an unlock position wherein the door can be opened, and an actuator responsive to electric command signal, with an output member movable into an operative position for allowing the latch member to be released from the stopper member and moved into the unlock position. The apparatus further includes an emergency unlocking device for forcibly moving the output member of the actuator into the operative position without requiring input of the command signal. The unlocking device has an emergent key cylinder into which an emergent key can be inserted from outside. The angular motion of the key is converted into a linear motion of the output member of the actuator toward the operative position.

Abstract: A grain-oriented silicon steel sheet having a low iron loss free from deterioration due to the stress-relief annealing, can be obtained by forming on its surface a forsterite film locally having regions, which have a thickness different from that of the remaining regions in the film, or locally having filmless regions which do not coat the steel sheet surface.

Abstract: A fluid control valve includes a valve member movable into engagement with a seating to prevent the flow of fluid through the valve, and an actuating member which is biased in one direction by a return spring and is moved against the action of the return spring by the armature of the actuator when the winding thereof is energized. The movement of the actuating element is transmitted to the valve member through an under travel spring which yields to allow continued movement of the actuating element when the valve member engages the seating.

Abstract: A cargo trailer wheel hub puller has a housing provided with a hub which loosely supports a bushing internally provided with threads. A pin passes through a hole in the hub to maintain the bushing in the hub. The bushing is provided with a collar which abuts an internal wall in the housing. A threaded rod passes in thread engagement through the bushing. The end of the rod inside the housing is provided with a contact pad which is adapted to apply a force against a vehicle axle while a torque force is applied to the other end of the rod so that the housing, which is attached to the structure of the trailer wheel hub is forced outwardly over the vehicle axle. The bushing is made from a milder steel than the rod so that, upon wearing out, it can be readily replaced by removing the pin and replacing the bushing.

Abstract: The belt lock comprises a closure mechanism and at least one belt strap end piece (2) which can be inserted into the mechanism, the belt strap end piece having a tongue (4) designed to lock with the mechanism. The mechanism has a metal frame (7), an arresting element (8) mounted in recesses (18) in the sides of the frame, an ejector (9) for the tongue, an arresting element support (10) and a belt-release button (11). In order to simplify the belt lock, reduce its manufacturing costs and increase its reliability, the arresting element (8) is designed as a plate with a rear recess (28) and the recesses (18) in the sides of the metal frame are designed as slots in which the arresting element (8) can be mounted. The slots extend parallel to the direction of motion of the tongue (4) in the frame (7) and their size is such that the pins (19) of the element (8) are guided to move in the direction of motion of the tongue (4) substantially without any play at right angles to this direction.

Abstract: A U-shaped clip having leg parts disposed outwardly from a crown on either side of a central axis, the leg parts having a configuration for intermeshing with each other during a clinching operation. The crown, on the interior thereof, is provided with a locking rib which extends transversely of the crown, the locking rib providing a planar surface which maintains abutting or adjoining metal tapes in a rigid position to prevent longitudinal and transverse movements between the metal tapes.

Abstract: In order to prevent production of build-up resistance and wear resistance on a roll for use in heat treating furnace effectively, an alloy layer, a cermet sprayed layer having reinforced zone and a chemical conversion coating are provide in this order on a roll substrate to form a multi-coating layer.

Abstract: In a propulsion device for power machines operating in conjunction with production lines carrying an uninterrupted stream of semi-finished iron or steel products, the machine or tool (5) forms a part of a guided mobile assembly (3) capable of traversing back and forth parallel to the production line (4) and set in motion by at least one wire rope (8) to which it is firmly anchored. The rope (8) is wound around and tensioned between two pulleys or drums (9, 10) of which at least one is power driven.

Abstract: The pump unit is provided, in particular for heating and cooling installations. The speed of the pump unit may be altered by changing the operating frequency of a frequency converter feeding the electric motor and which forms a structural unit with the pump unit. As soon as the pump unit has reached a parameter characterizing the thermal overload of the same, the frequency converter is controlled in a manner so as to reduce the speed, the reduced speed n' being greater or equal to half the normal speed n.

Abstract: A formable thin steel sheet such as hot rolled sheet, cold rolled sheet or surface treated sheet comprises not more than 0.003 wt % of C, not more than 1.0 wt % of Si, not more than 1.0 wt % of Mn, not more than 0.15 wt % of P, not more than 0.020 wt % of S, not more than 0.0045 wt % of O, not more than 0.0020 wt % of N, not more than 0.15 wt % of Al provided that a ratio of Al/N is not less than 30, and the balance being Fe and inevitable impurities, and has not only improved formability for press forming, deep drawing or the like but also improved fatigue resistance as a welded joint.

Abstract: A method of producing an ultra-low-carbon steel by using a vacuum degasser on a molten steel has the steps of conducting vacuum decarburization to attain a predetermined level of carbon content, e.g., 25 ppm or below, in the molten steel while progressively reducing the pressure in said vacuum degasser, conducting addition of hydrogen in which hydrogen is dissolved in said molten steel while said pressure is temporarily elevated to 20 Torr or above, and conducting final decarburization after reducing said pressure to 2 Torr or below. The addition of hydrogen may be conducted to meet the following conditions:[H].gtoreq.{([C]-[C]final)/5}+4wherein [H] represents the hydrogen content (ppm) in said molten steel in the state after the addition of hydrogen, [C] represents the carbon content (ppm) in the molten steel in the state after the addition of hydrogen, and [C] final represents the final carbon content (ppm) to be obtained.

Abstract: A surgical clip for closing the margins of a wound, is disclosed, which clip consists of a bridge and two legs having cutting edges at their ends and projecting from opposite ends of the bridge. Each leg has a part formed as an arc of a circle which adjoins the bridge, and a free ended straight section including the cutting edge of the leg, extending from the arcuate part of the leg. For reducing trama when the clip is implanted and for maintaining eversion of the wound margins after the clip has been implanted, the straight sections of the legs are set at an angle in the range of 2.5.degree. to 10.degree. with respect to the axis of symmetry of the clip.

Abstract: A discharging circuit, whereby a triangular discharging current waveform is generated; the ascending section of the triangular discharging current waveform is to be determined by a voltage and an inductance of the circuit, while the variation rate of a descending section of the waveform is to be controlled by an inductance, a peak current and a resistance in the circuit so as to generate a negative and descending current variation rate.

Abstract: Apparatus for splitting tree trunks by forcing a splitting element into the tree trunk while manipulating the tree trunk. The tree trunk is manipulated by a grab to abut against support and to be cleft by a vehicle-mounted splitting element which is movable when actuated by a vehicle.

Abstract: A graphite precipitated hot-rolled steel plate having excellent bending workability and hardenability, the graphite precipitated hot-rolled steel plate comprising: 0.1 to 1.0% (by weight percent) C; 0.05 to 1.0% (by weight percent) Mn; 3 to 50 ppm B; 200 ppm or less N the quantity of which is three times or more the quantity of B; and a balance of Fe and unavoidable impurities, wherein graphite the diameter of which is 5 .mu.m or less is precipitated in such a manner that distance between graphite particles is at a distance of 5 .mu.m or longer.