Abstract: A retainer for insert-retaining a plurality of pin terminals includes a ferrite member having an aligned arrangement of through holes formed at insertion positions of the pin terminals and a resin member covering one surface of the ferrite member. The resin member also has an aligned arrangement of holes for receiving the pin terminals. The ferrite member functions as a filter element to reduce noise. Thin portions are formed along the inner circumferential surfaces of resin member defining the holes. The thin portions are deformed or fractured by the insertion of the pin terminals, and then each deformed or fractured portion is sandwiched between the inserted pin terminal and the inner circumferential surface to thereby elastically engage the pin terminal, resulting in the retainer being secured to the pin terminals in a manner which prevents the terminals from shifting in position.

Abstract: A filter connector comprising a housing, connector terminals mounted on the housing, filter elements mounted around the connector terminals, and a support plate for supporting the filter elements as being mounted on the housing. The support plate has pairs of elastic flaps which are formed at the positions corresponding to each of the filter elements, the free end of each flap holds the external surface of each filter element to prevent destruction of the filter elements attributable to the difference in the thermal expansion coefficients of materials.

Abstract: A modular jack comprising a built-in common-mode choke coil in which each of two wires of the common-mode choke coil includes its one end comprising a contactor to be put in contact with a counterpart plug and includes the other end comprising a connecting lead to be connected to the printed wiring of a circuit board.

Abstract: A surface mounting type connector has a connector plug on its front and has a connector housing from which connector pins project at the rear. The connector pin holder is placed at the rear of the connector housing, and has through holes formed therein. Each of these through holes in positioned corresponding to one of the connector pins. On the inner surfaces of the through holes, through-hole conductors are formed. On one or both main planes of the connector pin holder, conductive patterns are connected to each of the through-hole conductors. Each of the tips of the connector pins is inserted into one of the through holes in the connector pin holder, and these tips of the connector pins are connected to the corresponding conductive patterns via the through-hole conductors.

Abstract: In the chip type component installation structure wherein chips are arranged to be joined by solder to a fitting pattern provided on a printed substrate, resist films are set separately in the space of the fitting pattern in order to reduce the quantity of solder. The resist films are set in the space of the fitting pattern separately, so that the structure provides a lesser quantity of solder to join and fix chips, a continuous solder band over the fitting pattern, and a lesser but sufficient quantity of the solder. The structure prevents cracks and breakages of chips due to the expansion and contraction of solder, increases the polarity of solder against chips and electrodes, shortens the soldering time, and increases the reliability of chip installation work.

Abstract: A surface mountable connector to be mounted on a printed substrate has a plurality of connector pins projecting from the rear surface to be connected with wiring patterns on the printed substrate through a connector pin holder. The connector pin holder has a plurality of through holes at a pitch equal to that of the connector pins and a plurality of conductive patterns on the outside thereof corresponding to the through holes. The connector pins are inserted into the through holes in the connector holder and electrically connected to the conductive patterns corresponding to the through holes respectively, and the connector pin holder is placed on the wiring patterns on the printed substrate with the conductive patterns on the outer surface connected to the wiring patterns on the surface of the printed substrate by soldering, thereby electrically connecting the tip of each connector pin to a corresponding wiring pattern on the surface of the printed substrate.

Abstract: A connector having the filtering function is disclosed. An electrically conductive radiating plate is provided with a plurality of feed through capacitor elements, the radiating plate being installed in a metallic shell under the condition that it is electrically connected with the shell, and a central conductor passing through each of the feed through capacitor elements being connected with a specified circuit at both ends thereof.Each of the feed through capacitor elements is formed of an electrode provided on the inside and outside circumferential surface of a cylindrical dielectric having a function of a varistor, an outside electrode being electrically connected with the radiating plate, an inside electrode being electrically connected with the central conductor, and each of the feed through capacitor elements absorbing and eliminating noises and abnormal voltages in the connector thereby eliminating the necessity of adding a separate varistor and the like to a printed substrate later on.

Abstract: A filter connector comprises a connector body which includes a conductive shell and an insulating insert provided in the conductive shell and having a plurality of through holes. First ends of upper first terminal pins are inserted in the through holes of the insert. Second ends of the first terminal pins pass out the back of the connector body. At least one of the plurality of terminal pins is adapted to support a printed circuit board. The printed circuit board has a conductive pattern which is electrically connected with at least one of the upper first terminal pins. A second terminal pin is electrically connected to the conductive pattern, whereby the second terminal pin is electrically connected with at least one of the first terminal pins. A plurality of filter elements are inserted in a current path between at least one of the first terminal pins and the second terminal pin.

Abstract: A filter connector device formed by combination of a male connector and a female connector. When the male connector and the female connector are engaged with each other, male connector pins and female connector pins are connected with each other. A filter circuit is formed by a plurality of elements including at least one capacitor and at least one inductor in cooperation with each pair of male and female connector pins thus connected in series with each other, and the plurality of elements forming such a filter circuit are dividedly provided in the male connector and the female connector.

Abstract: A noise eliminating filter is incorporated in the circuits of electronic equipment to eliminate unwanted signals by grounding such signals. The filter includes a tubular metal casing, capacitors and a magnetic material housed within the casing, and a terminal passing through the capacitors and magnetic material. Capacitor housings are provided at both axial ends of the metal casing. A magnetic material housing which is smaller in diameter than each capacitor housing is formed between the capacitor housings and a feedthrough terminal is inserted through the capacitors contained in both the capacitor housings and the magnetic material contained in the magnetic material housing. The capacitors, which are to be incorporated in the housings at both end portions of the casing are made tubular and equal in diameter, thereby enabling the metal casing to be compact and enabling the capacitors to be standardized.

Abstract: A noise reduction filter which comprises a block of magnetizable material, and first and second laminated capacitors each having first and second terminal electrodes opposite to each other. The first and second capacitors are mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors spacedly confronting with each other. The filter also comprises a first electrode member partially extending through the block with its opposite end portions connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together.

Abstract: A transmission case for tractors consists of three parts, a front transmission case, a rear transmission case and a spacer transmission case, the spacer transmission case having a mounting flange around its outer periphery. The front and rear transmission cases are securely mounted to the mounting flange of the spacer transmission case so that the spacer transmission case is contained in either or both of the front and rear transmission cases thereby minimizing the entire length of the transmission case. The transmission case is also characterized in that the spacer transmission case has an opening in the ceiling to enable easy access to the gear components installed in the spacer transmission case during assembling work and adjustment.

Abstract: A disc brake device for motor-cycles and the like, constructed with a fixing bracket of inverted U-shape, having a flat horizontal roof plate and downwardly extending side plates, a pair of caliper arms joined together by a connecting rod and slidably mounted thereon in the space provided between the side plates, a fixed friction brake pad held in one of the caliper arms, a movable friction brake pad slidably inserted in a bore formed in the other caliper arm so as to be clamped with a brake disc of a wheel of the vehicle, interposed between the friction brake pads by a brake actuating lever through a screwing action between a male threaded nut member and a female threaded screw member embedded in the caliper arm that accommodates the movable friction pad, and an adjustment bolt provided concentrically with the screw and nut members to compensate wear occurring in the movable friction pad, the brake actuating lever being fitted to a square shaft provided at the end of the screw member, and tightly fastened th