Abstract: An object of the present invention is to provide a housing block retaining construction which allows a release tool to be easily operated, and will not interfere with the withdrawal of a housing block. According to the present invention, there is provided that a housing block retaining construction comprises a retaining lance slanting in the insertion direction provided in an insertion opening of a housing holder, a notch in which a distal end of a release tool is engageable formed in a distal end of the retaining lance, a retaining projection for engagement with the retaining lance provided on a housing block, and a recess for allowing the release tool to pass therethrough formed in that portion of the retaining projection corresponding to the notch.

Abstract: A female terminal comprises: a square cylindrical electric contact portion (2) having an opening (2a) into which a male terminal is inserted: an elastic contact piece (3) housed in the electric contact portion and brought into elastic contact with the inserted male terminal, the elastic contact piece being formed with two side lug portions (10); and at least one supporting portion (14) formed on at least one of side walls of the electric contact portion, for supporting at least one of the lug portions formed in the elastic contact piece. For prevention of the elastic contact piece (3) from being dislocated from the supporting portion (14) without increasing the external size of the female terminal, in particular, the supporting portion (14) is elastically bent inwardly from the side wall (7) of the electric contact portion (2).

Abstract: An electrical connector with a terminal locking member for doubly locking terminals in terminal accommodating cavities in which terminals are smoothly inserted into terminal accommodating cavities in a connector housing and the terminals are doubly locked with certainty.

Abstract: To provide a multi-pole connector in which projected male connectors are protected from interference from the outside, and a smooth fitting of the connectors can be achieved. In the multi-pole connector, male connectors are mounted on one frame in such a manner that the male connectors are projected from the frame, and female connectors for the male connectors are mounted on the other frame. Connector-protecting ribs are formed at a peripheral portion of the one frame, and are projected to a height equal to or higher than a height of distal ends of the male connectors, and rib reception guides for the ribs are formed on the other frame.

Abstract: The present divisional multi-polar connector is free from difficulties caused by uneven end portions of the male connector housings, such as deformation of the connector, entanglement of the wire harness or the like with the connector during transportation, or damage to the terminals. In a divisional multi-polar connector in which plural kinds of male connector housings are protruded from a first frame, the front end of the first frame has recesses so that the engaging surfaces of the end portions of the male connector housings are made flush with each other. When a male connector housing is not present, a dummy housing is provided, so that all the points on the overall engaging surface of the connector are co-planar.

Abstract: A cover for protecting a large number of electric wires in the housing in a bolt-screwed high-density multi-pole connector having a screw bolt. The cover is plate-shaped. The cover has an engagement hole corresponding to a bolt holder having a rectangular cylinder into which the screw bolt is inserted and a handle provided at one end where the electric wires are fixed and from which they are extracted. Thus, the cover can be easily mounted on the housing. With no fear of catching or breaking of electric wires, the direction of extracting the electric wires can be optionally selected. Further, the cover can be fabricated at low cost.

Abstract: A superconducting transistor with superior withstand voltage having source region and a drain region formed of oxide superconductors 3, a PrBa.sub.2 Cu.sub.3 O.sub.7-x layer 2 or an ScBa.sub.2 Cu.sub.3 O.sub.7-x layer 2 forming an intermediate region sandwiched by the source and drain regions. The regions are disposed on a substrate 1. An insulation layer 4 is disposed on the intermediate region. A transistor uses the intermediate region as an insulator when the gate is turned off, and as a superconductor when the gate is turned on.

Abstract: An inspection method and an inspection apparatus for the component members of the cathode-ray tube are disclosed. An inspection apparatus composed of normal members other than an object of inspection is prepared at the time of inspecting the phosphor screen of the screen panel, the electron gun or the shadow-mask constituting the cathode-ray tube. In advanced to assembling the cathode-ray tube, the object of inspection is mounted on the inspection apparatus, so that the conformance or rejection of the object of inspection is decided from the illuminated condition of the phosphor screen by irradiating electron beams thereon.

Abstract: A terminal connecting structure securing and retaining a holding tongue of the terminal for connecting at a conductive end portion of the flat circuit body, the terminal connecting structure is provided with a covering plate retaining the terminal, the covering plate includes notched portions for engaging with the holding tongue at end of the flat circuit body.

Abstract: A connector assembly in which a first connector housing is secured to a second connector housing using a bolt and nut arrangement. The assembly includes a bolt which extends through the first connector housing and is threadably engaged with a nut disposed in the second connector housing; and a depressing flange formed on the shank of the bolt for abutting against the first connector housing. According to at least one embodiment of the invention, a bolt holder is mounted on the bolt between the bolt head and the depressing flange to retain the bolt to the first connector housing. The bolt holder includes either a single member having a bolt hole, and a bolt inserting slot communicated with the bolt hole and having a width smaller than the diameter of the bolt, or two individual members which define a bolt hole when combined together to retain the bolt therein.

Abstract: This invention relates to a hardening material for medical and dental use which is composed of a powder of calcium phosphate and a hardening liquid.A subject of the present invention is to provide a hardening material wherein a calcified hard tissue analogous to body hard tissue capable of making chemically a sufficient bond with body hard tissue is formed in a body within relatively short time passage.To attain the above-described objective, the hardening material for medical and dental use relating to the present invention is composed of a calcium phosphate powder and a hardening liquid and also of at least either one of collagen and/or collagen derivatives in a state of powder or solution, and the calcium phosphate powder contains a powder of .alpha.-tricalcium phosphate [.alpha.-Ca.sub.3 (PO.sub.4).sub.2 ]and/or tetracalcium phosphate [Ca.sub.4 (PO.sub.4).sub.2 O] as an essential component and the hardening liquid comprises at least one acid selected from inorganic acids and acetic acid.

Abstract: This invention relates to a hardening material for medical and dental use, in which at least either one or both of .alpha.-tricalcium phosphate and tetracalcium phosphate as an essential component and, as a hardening adjuster, the following 1 tannin, 2 tannin and collagen, 3 collagen and an organic acid, 4 tannin, collagen, and an organic acid, 5 tannin and an organic acid, or 6 at least two kinds or organic acids.

Abstract: An apparatus and method for measuring the properties of underground water are disclosed. The device comprises a measuring apparatus with a measuring sensor for measuring the properties of the underground water, a pair of expandable and contractible packers arranged above and below the measuring apparatus, a transmitting means for sending measurement signals from the measuring apparatus, and a receiving means located at the ground surface for receiving the measurement signals from the transmitting apparatus. The method of the present invention comprises the steps of placing a measurement apparatus with a measuring sensor in a bored hole at a desired depth, arranging a pair of packers so that the measuring sensor is interposed therebetween, pumping water to the ground surface from the space between the two packers, and comparing the properties of the water pumped to the surface with the properties of the water measured with the above-mentioned measuring sensor.

Abstract: A low insertion-withdrawal force electric connector is disclosed wherein a pin is mounted on one side wall of a male housing; a groove into and out of which said pin is movable is provided in a hood of a female housing; a cam lever is pivotally mounted on said hood; and the cam lever has at its front end an eccentric cam groove which is engageable with the pin so as to cause said two housings to be fitted and disengaged relative to each other in response to the pivotal movement of said lever. A fitting-side acting surface of the eccentric cam groove against the pin is disposed generally perpendicular to the direction of advance of said pin when the two housings are completely fitted together.

Abstract: A complete locking confirming device for an electric connector comprising a first connector having a first connector housing, a second connector having a second connector housing capable of being coupled with the first connector housing, and locking means provided in combination with the first and second connector housings to lock the electric connector when the first and second connectors are coupled completely. The complete locking confirming device comprises a complete locking detecting slider mounted on either of the first connector housing and the second connector housing so as to be positioned at a complete locking indicating position only when the first and second connectors are coupled completely and the electric connector is locked by the locking means.

Abstract: The method for controlling the withdrawal of the electrode in an NC electric-discharge machine permits a linear withdrawal of the electrode to a forward position at least two blocks preceding the present forward position from the workpiece according to a withdrawal command received by the NC unit and with a high efficiency while a workpiece is being machined with electric discharges made between the electrode and the workpiece with the former being forwarded in relation to the latter according to a control information including positioning commands given to the NC unit for each block.

Abstract: A method of producing a voltage nonlinear ZnO varistor in which seed grains of ZnO are produced by spray drying a slurry of ZnO particles and then sintering the dried slurry to form seed grains having a size of 10 to 100.mu.m. The seed grains are mixed with a ZnO powder of particles of much smaller size than the seed grains and a small amount of an auxiliary component. The mixture is then molded and sintered to form the varistor element to which electrodes are attached.

Abstract: A game machine with an automatic judging function according to the present invention is used to play a game in which a winner is determined according to predetermined rules of the game by moving pieces having their own characters across a game board, e.g., a checkerboard. The game machine includes classified pieces whose characters cannot be known by an opponent, a checkerboard with sensors for detecting the rank characters of the pieces disposed thereon, and a judging unit for automatically determining the winning piece on the basis of the rank characters of the pieces when they encounter on the game board. Accordingly, a game player can enjoy a game by inferring the rank characters and future moves of opponent's pieces.

Abstract: A locking device for connector adapted to be locked by fitting projections formed on both sides of a male connector housing in engaging holes formed in locking arms connected to the side walls of a female connector housing, characterized in that each of the side walls of said female connector housing comprises a riser portion, and a raised supporting portion and a lower non-supporting portion which are integrally connected, respectively, to both sides of the riser portion, and each of said locking arms comprises a connecting riser portion, and an unlocking lever and a locking plate portion which are integrally connected, respectively, through the connecting riser portion to both sides thereof, said unlocking lever extending above and away from said supporting portion, said locking plate portion extending above and away from said non-supporting portion, said locking plate portion comprising an unlocking force transmitting portion integrally connected thereto as an extension of the unlocking lever.

Abstract: A non-ferrous metal mechanical part having a wear-resistant and smooth surface, and comprising a substrate of a metal selected from the group consisting of aluminum, aluminum alloy, nickel, and nickel alloy, and a surface layer formed on a surface of said substrate and containing chromium oxide (Cr.sub.2 O.sub.3) as a major constituent. The chromium oxide (Cr.sub.2 O.sub.3) is a substance which has been converted by heating a chromium compound, and an intermediate layer containing a reaction product between the substrate and chromium oxide in the surface layer is formed at an interface between the surface layer and the substrate.