Abstract: An electromagnetic relay, comprising: a box-shaped casing having a bottom wall, a pair of side walls, a pair of end walls, and a top wall, an electromagnet unit received in the casing with its axial direction extending in parallel with the top, bottom and side walls of the casing; and at least one contact unit mounted on the top wall; one of the end walls being provided with an opening for receiving the electromagnet unit therefrom. The inner surfaces of the side walls of the casing are provided with guide grooves extending along a longitudinal direction of the casing for guiding side ends of the yoke when receiving the electromagnet unit into the casing. Thus, simply by press fitting only the electromagnet unit from the opening provided in one of the end walls of the casing, the electromagnet unit may be securely received in the box-shaped casing. This facilitates the required assembly work and permits the use of automated machines for the assembly work.

Abstract: A packaged substrate inspecting apparatus comprises an imaging device for picking up images of substrates. Land images are extracted from the image of a non-packaged substrate and that of a packaged substrate. On the basis of the shapes of the land extracted from the non-packaged substrate and those of the packaged substrate, positional relationship between a part mounted on the packaged substrate and the land is determined to be utilized for deciding whether the mounted state of the part on the substrate is to be satisfactory or not.

Abstract: There is provided an optical card information recording/playing back apparatus comprising: an optical system for irradiating a light beam for reproducing recorded information onto information recording tracks of the optical card on which pit trains indicative of recording information are formed; a photo detector for receiving the reflected light from the optical card and outputting a photo sensing signal; a pit correspondence signal producing circuit for detecting a peak of the photo sensing signal and producing a pit correspondence signal which changes in correspondence to a pit position on the basis of the result of the peak detection; a frequency/voltage converter for converting a frequency of the pit correspondence signal to a voltage; and a discrimination signal producing circuit for comparing a voltage output of the frequency/voltage converter with a reference value and producing an information presence/absence discrimination signal.

Abstract: An electromagnetic relay, comprising: a electromagnet consisting of an iron core and a solenoid wound thereon; a yoke extending in parallel with the electromagnet and attached to one end of the iron core; an armature pivotally attached to a part of the yoke adjacent to another end of the iron core at its base end; a fixed contact unit provided adjacent to the electromagnet; an pivotally supported moveable contact carrier; an extension arm extending from the armature and having a free end adapted to abut an actuation point of the moveable contact carrier located between its pivoted point and a moveable contact piece carried thereby; the moveable contact piece being adapted to cooperate with a fixed contact member provided in the fixed contact unit.

Abstract: An electronic cash register is provided which an operator can operate by inserting a card therein on which at least an operable period of time for which said register is operable has been recorded. The register can be operated when the present time is within the operable period of time recorded on the card.

Abstract: Disclosed are basic circuits operable in a current mode in multivalued logic circuit systems, analog circuit systems and the like. Examples of the basic circuits are a successor, quantizer, adder, subtractor, divider, multiplier, decoder, literal circuit, equivalence circuit, bilateral T-gate, complement literal circuit and h operator circuit. These basic circuits are realized by using floating threshold switching circuits, floating window switching circuits, threshold SPDT switching circuits, and the like.

Abstract: A microswitch in which a good snap action feeling is obtained and an operating stroke is large is provided. Included in the microswitch is a swingable lever which is pushed by a pressing projection of a push button swingably pivotally supported. One end of the lever is pivotally supported and the other end is coupled with one end of a movable member having a movable contact. The movable member is biased by a spring in one direction.

Abstract: A solid state relay comprises a radiator, a control circuit block and a power circuit cartridge. The radiator has a base portion and a plurality of fins extending from the base portion. The control circuit block has a pair of input terminals and a pair of load terminals and is attached to a front surface of the base portion of the radiator. The power circuit cartridge includes therein a power semiconductor element which is turned on or off by a control circuit in the control circuit block, an absorber which is connected between the pair of load terminals, and a heat radiating plate to radiate heat of the power semiconductor element. The power circuit cartridge is detachably attached to the control circuit block so as to be electrically connected thereto. A through space is formed in the control circuit block so as to pierce from a front surface of the control circuit block to the front surface of the base portion of the radiator. The power circuit cartridge is inserted into the through space.

Abstract: A novel electro-mechanical switch device is disclosed which is suitable for use in a factory production line to detect and control the flow of workpieces or articles of manufacture along the line. The switch device includes a pair of switches (101, 102) operative in response to the workpieces passing thereby along the production line, a switch circuit (13) electrically connected to the switches (101, 102), and a moisture detector (15). The pair of switches are so designed that the operation of one switch is delayed with respect to the other. The switch circuit (13) functions in response to the operation of the switches and the moisture detector (15) to provide a warning signal when one of the switches fails to operate within a predetermined delay time with respect to the other switch, as well as when the moisture detector senses a presence of moisture.

Abstract: An air connector for use in association with a sphygmomanometer body, comprising an air socket having an air plug acceptor and a pressure measuring air line and an exhaust air line each communicating with the air plug acceptor, an air supply plug removably connected to the air plug acceptor of air socket and provided with an air tube joint at one end thereof and an insert cylinder at the other end, and a control means which is removably connected to the insert cylinder of air supply plug and, upon installation, brings the air supply line of air supply plug into communication with the pressure measuring air line and exhaust air line for blood pressure determination and, upon removal, brings the air supply line of air supply plug selectively into communication with the pressure measuring air line for pressure assay.

Abstract: An electromagnetic relay where a movable stand is retained by a pair of opposing leaf springs, the movable stand is operated in the opposing direction of the leaf spring in accordance with the energization, deenergization of the electromagnet, the movable terminal is disengageably brought into contact against the fixing terminal supported through the support stand, and the movable stand is provided with a through hole in the vertical direction to be press-fitted, mounted in it, a groove in the vertical direction in the contact portion of the movable stand and the leaf spring, and a passage for guiding into the groove portion the bonding agent to be put into the through hole.

Abstract: This invention provides a pushbutton switch which produces a click sound, the loudness of which is easily variable. In response to the vertical movement of operating cams of a pushbutton, a plate spring moves up and down. The moment when the edge of the operating cams trips over click spring portions of the plate spring, a force is applied to the plate spring so that the plate spring hits the inner top wall or bottom wall of a housing. In this manner, the pushbutton switch provides both a snap feeling and a click sound.

Abstract: A card to be used is first discriminated as to whether the card is a credit card or a debit card on the basis of data recorded on the card. In the case of a credit card, a necessary credit card processing including card authorization is effected. In the case of a debit card, a necessary debit card processing including immediate payment processing of an amount of money for transaction is efffected.

Abstract: A trigger switch includes a trigger member pivotally attached to a grip member via a pivot pin and connected to an electric switch main body. By pressing and pivotally moving the trigger member, the switch main body can be actuated. To avoid inadvertent actuation of the switch main body, a lateral lock pin is passed through a slot provided in a metallic lock plate securely attached to the trigger member and a hole provided in the grip member so as to secure the trigger member immobile by engaging a large diameter portion of the lock pin in an expanded part of the slot of the metallic lock plate and release the trigger member by moving the large diameter portion out of the slot. To increase the margin of an insulation distance, the metallic lock plate is placed a certain distance away from the pivot pin.

Abstract: A semiconductor laser having an internal current restriction includes a (100) face-oriented p-type GaAs substrate treated to have a groove or difference in level having an (n11) A face (n=1-5) as an inclined surface. An AlGaAs:Si layer, an AlGaAs:Be cladding layer, an AlGaAs active layer, and an AlGaAs:Sn cladding layer are grown on the substrate in the order mentioned. Since the Si acts as an n-type material on the (100) face and as a p-type material on the (n11) face, the AlGaAs:Si layer becomes a p-type layer solely in the groove, and it is in this portion that a current path is formed. The laser can be fabricated by molecular-beam epitaxy applied in a single step.

Abstract: A shutter is provided near an IC card inserting port of an IC card reader/writer. Contact members adapted to be come into contact with the contacts of an IC card are provided for a member constructing the shutter. When the shutter is closed, the contact members are located at positions such that they can come into contact with the contacts of the IC card.

Abstract: The projection lights including the red and infrared lights are projected from a light projecting device (3) onto a reflex reflector (7) arranged at a position which is away from the light projecting device by a predetermined distance. The reflex reflector reflects the red light and absorbs the infrared light. The reflected lights from the reflex reflector or an object to be detected are detected by a photo sensitive device (4). The photo sensitive device individually detects the red light and infrared light and outputs two light detection signals. The sum of the light detection signals is compared with the first threshold value. The difference between the light detection signals is compared with the second threshold value. An object detection signal is formed on the basis of the logical arithmetic operation of the results of the comparison.

Abstract: A contactless switch comprising a moveable body assembly including a plunger and a lens carrier received in a casing axially slidable manner between a light emitting element and a light receiving element which are also disposed along and on the axial line of the casing. Thus, the radial dimension of the switch can be reduced, and a compact design is made possible. Additionally, the actuating stroke of the moveable body assembly can be made large without increasing the dimensions of the switch. In particular, since a switch output can be produced from a signal processing circuit when the amount of the light received by the light receiving element has reached a certain predetermined level, the point of activation of the switch can be accurately defined by adjusting a reference level for the level of the light received by the light receiving element, and this adjustment can be easily carried out.

Abstract: A switch device is disclosed for detecting an object which comprises a transducer for emitting and receiving ultrasonic signals to and from an object, a transmitter for driving the transducer, a receiver for receiving a signal from the transducer, a gate for detecting a short-distant object, a gate for detecting a long-distant object, and a circuit for setting the timings of the gates in accordance with the detecting ranges of the object.

Abstract: A reflection type photoelectric switch including a light emitting member for emitting a substantially single light beam having first and second different wavelengths, a reflector for reflecting the emitted light beam at different reflection rates with respect to the first and second and wavelengths, a light receiving member for sensing rays at the first and second wavelengths, and means for analyzing outputs generated from the light receiving member receiving the reflected light beam at the first and second wavelengths to generate an output representing the existence of an object to be detected by the photoelectric switch.