摘要:
An electromagnetic contactor having normally open and normally closed contact pairs 22, 26 includes a movable crossbar 12 having apertures 14 each defining two guide surfaces 18a, 18b; 18c, 18d inclined at different angles for guiding spring biased movable contact members 16 disposed in the apertures. These inclined surfaces serve to jam the crossbar against the base 10 of the contactor when the crossbar is moved in a direction to open fused contact pairs during the initial spring decompression movement of the crossbar, to thereby prevent the normally open and normally closed contact pairs from being closed at the same time.
摘要:
An electromagnetic contactor having normally open and normally closed contact pairs 22, 26 includes a movable crossbar 12 having apertures 14 with sloping guide surface 18', 18" for guiding movable contact members 16 disposed in the apertures. These sloping surfaces serve to jam the crossbar against the base 10 of the contactor when the crossbar is moved in a direction to open fused contact pairs, to thereby prevent the normally open and normally closed contact pairs from being closed at the same time.
摘要:
A method of manufacturing a cylindrical member having anti-slip projections formed on axial end faces, the method comprising the steps of: employing a roller die, which is provided with a circumferential die groove of annular form extending through a medial section in a generatrix direction of a die face defined by an integral tapered outside peripheral face, and with a plurality of sloping die grooves extending in a tapered slope direction of the die face situated to both large-diameter and small-diameter sides of the circumferential die groove; providing plastic working to the axial end face with the small-diameter side of the roller die facing towards an inner peripheral side of the cylindrical member and with the large-diameter side facing towards an outer peripheral side, by pushing the die face against the axial end face while rotating circumferentially; and forming simultaneously an annular water barrier projection and the anti-slip projections.
摘要:
A semiconductor integrated circuit device is provided in which (i) inspection pads are arranged along one side or two opposite sides of the semiconductor integrated circuit device for bonding pads arranged along the sides other than the side or the two opposite sides and (ii) the bonding pads are connected to their respective inspection pads by connection wires The inspection is carried out by applying probe needles to the pads (inspection pads and bonding pads) arranged only along one side or two opposite sides of the semiconductor integrated circuit device. The invention also provides a semiconductor integrated circuit package with leads on four sides includes a semiconductor integrated circuit device with bonding pads laid along one pair of opposite sides of the four sides, and a table for supporting the semiconductor integrated circuit device. While the bonding pads along the pair of opposite sides of the semiconductor integrated circuit device are connected with leads along the four sides of the package, and some leads are bent toward the respective pads. The present invention the inspection of a plurality of semiconductor integrated circuit devices with probe needles at a time.
摘要:
A beverage dispenser (10) is provided, for ejecting a beverage into a receptacle, including nozzles (27, 28) provided in the beverage dispenser for ejecting the beverage, obstacle detection means (50) for detecting an obstacle around the nozzle, and alarm means (60) for issuing an alarm when the detection means detects the obstacle. The alarm may not be issued from the alarm means when the beverage is ejected or a switch (56) may be provided for causing the alarm means inoperative. Thereby, those around the dispenser are informed of the fact that the operator or a man of evil intention has had access to the nozzle in the beverage dispenser.
摘要:
A Josephson junction element having a substrate of a single crystal having a V-shaped notch formed in a surface of the substrate and a wiring pattern of an oxide superconductor formed on the surface of the substrate and crossing the notch to form a weak link region in the pattern at a position above the notch. The notch is defined by first and second walls joining with each other at the bottom of the notch and has first and second corners at which the first and second walls meet the surface of the substrate. The first and second corners have radii of curvature of 5-50 nm and 50-500 nm, respectively, provided that the difference in radius of curvature between the first and second corners is not smaller than 10 nm. The notch is formed by obliquely irradiating a predetermined portion of the substrate with a focused ion beam.
摘要:
A contactor, relay, or other switch has stationary contacts and a movable crossbar which carries a movable contact member provided with movable contacts. The contact member has lost motion relative to the crossbar and is resiliently biased by a spring so that the crossbar can continue to move after the contacts have met the stationary contacts. The crossbar has oblique guide grooves engaging the contact member so that, during the further movement of the crossbar, the contact member is caused to move longitudinally while the movable and stationary contacts touch, thus producing a contact wiping action due to sliding of the contacts. The contact member also has an asymmetical cross section comprising a projection where, when the contacts are open, it touches the crossbar so that, in this condition, the contact member is laterally tilted. When the movable contacts meet the stationary contacts and the crossbar continues to move, the contact member rotates from its tilted position under the action of the spring, causing the movable contacts to turn on the stationary contacts, thus producing a rotary wiping action, When the contacts are opened, similar double wiping action occurs in reverse. The rotary wiping action is in a curved path generally perpendicular to the straight path of the wiping action due to sliding of the contacts.
摘要:
An apparatus for mounting an electromagnetic unit on a frame includes a mounting recess at the bottom of the main body of the electromagnetic unit, a guide recess which is communicated with the mounting recess at one side thereof so that it is normal to the mounting recess, and a slidable member which is slidably inserted into the guide recess and normally biased toward the mounting recess by means of a spring supported by a projection disposed in the guide recess, the improvement comprising a stopper disposed in a hole formed in the slidable member, which opposes the spring bearing in the guide recess. The stopper in the hole also serves as a spring guide. The spring is disposed between the stopper in the hole and the length a of the slidable member determined by guide projection formed at the guide recess, the movement length b of the slidable member restricted by the stopper and the projection length c of the front end of the slidable member which projects into the mounting recess is preset so that a>b>c.
摘要:
A method and apparatus for indicating the contact structure of an electromagnetic contactor on the housing thereof using laser light is disclosed. The contact structure of a contactor to be marked with terminal numbers or the like is detected by a checking device. Based on the results of checking, a mask selector selects a suitable mask and positions it in the optical path of a laser. Laser light is shined through the mask onto the housing of the contactor. The laser light which passes through the mask and strikes the housing produces discoloration of the housing, and extremely clear terminal numbers, name plates, or other information in the form of characters, symbols, or shapes can be marked on the housing with the laser light. In addition to determining the contact structure, the checking device determines whether the contacts are faulty.