Abstract: The present invention provides a printed wiring board free from undercuts, which can be formed by an additive method without a dry treatment and a dry treatment apparatus, and a production method thereof. A printed wiring board of the present invention has a conductor circuit free from undercuts which is produced by carrying out additional plating to fill undercuts.

Abstract: The present invention provides a printed wiring board free from undercuts, which can be formed by an additive method without a dry treatment and a dry treatment apparatus, and a production method thereof. A printed wiring board of the present invention has a conductor circuit free from undercuts which is produced by carrying out additional plating to fill undercuts.

Abstract: A tubular bus bar is comprised of a conductive pipe member that is three-dimensionally bent, and first and second connections that are provided, e.g., at both ends of the pipe member. The pipe member is covered with an insulating tube, except for those portions at which the first and second connections are formed. The tubular bus bar is lightweight, easy to be recycled, high in power transfer efficiency, and easy to be assembled to an electrical equipment.

Abstract: The hydraulic retarder control system comprises pressure reducing valves which can switch the pressure of the air to be supplied from a pressure air source 4 to an air/liquid conversion device 25 at least to a low pressure, an intermediate pressure and a high pressure, or a proportional electromagnetic valve 110 which can reduce and adjust the pressure of the air in a stageless manner, and running speed detect devices 100, 111 which detect the fact that the running speed of a vehicle is equal to or slower than a given running speed. When there is given a detect signal by the running speed detect devices 100, 111, then the pressure reducing valves 32, 95 or the proportional electromagnetic valve 110 are or is switched over to a pressure higher than a set pressure for running speeds exceeding the given running speed, so that the high pressure air from the pressure air source 4 can be supplied to the air/liquid conversion device 25.

Abstract: A brake device for braking a shaft including a number of rotors rotatable with the shaft and at least one stator interposed among the rotors. The frictional force generated between the rotors and the stator is fed back to a rotatable pressure plate to assist in braking the shaft. In a first embodiment, a projection of the pressure plate engages one of a number of toothed portions that are provided on one of the stator elements to transmit force from the stator elements back to the pressure plate. In a second embodiment, a linkage element for turning the pressure plate also engages one of the toothed portions on the stators, thus transmitting force from the stator back to the pressure plate to assist in braking.

Abstract: A hydraulic retarder and brake unit mounted on a rotating vehicle drive shaft has a first rotatable member forming a brake drum and mounted on the drive shaft for rotation therewith. A non-rotatable member supports brake shoes movable into frictional engagement with a lining of the brake drum and are actuated by the lever for frictionally braking rotation of the drive shaft. A plurality of stator vanes are formed on the non-rotatable member. A second rotatable member is mounted on the drive shaft for free rotation independently of the rotation of the drive shaft, while a plurality of rotor vanes are freely rotatably mounted around the drive shaft and in facing opposition to the stator vanes for providing a hydraulic coupling. A clutch selectively rotatably couples the second rotatable member with the first rotatable member so that the rotor vanes are rotated with the drive shaft and the rotation of the drive shaft retarded.

Abstract: For the improvement in the hydraulic retarder comprising a fixed member (1) of vehicle, a shaft (2), a housing (4), a vane chamber (3), a plurality of stator vanes (5) and a plurality of rotor vanes (7), a drum-like member (10), a plurality of clutch pistons (14a), (14b), (14c), a cylindrical member (6) a pair of arcuate brake shoes (16) and a parking lever (21) are added to function respectively.

Abstract: A disc brake caliper support structure is disclosed which comprises a rear arm forming a cylinder containing a piston for pressing a friction pad supported and guided by an anchor pin and a front arm for fixing another friction pad to make a caliper holding disc rotors with both the friction pads therebetween movable in the axial direction of guide pins by inserting a plurality of guide pins installed on the caliper in the support member fixed to a bogie frame. One guide pin and the support member are floatably coupled in such a manner as to oscillate relative to each other through a spherical bush and a spherical member, each being set in position by the support member. The other guide pin and the support member are floatingly coupled in such a manner as to oscillate relative to each other through a vibration-proof cylindrical rubber member with a cylindrical inner liner formed with rubber whose outer peripheral axial threads are sawtooth-like in the peripheral direction.

Abstract: An improvement in mounting brake shoes on disk brakes for railroad cars in which securing member is mounted beneath the open ended groove in the brake assembly to which the shoe is mounted. The securing member moves a predetermined longitudinal distance after being unbolted from the brake assembly, is pivotable relative thereto. The securing member has an anchoring pin protruding therefrom on which a brake shoe may rest as it is being lowered from the brake assembly so that a single person can change a heavy brake shoe without fear of injury.