Abstract: A resin worm wheel is formed by injection molding and includes a first end and a second end. The worm wheel is adapted to be driven by a worm. The worm wheel further includes: an engaging portion including a plurality of teeth engageable with the worm and a tooth space formed between the neighboring teeth; a first non-engaging portion adjacent to the engaging portion at the first end of the worm wheel and not engaging with the worm; and a first cutout portion formed at the first non-engaging portion continuously from the tooth space, the first cutout portion extending axially.

Abstract: A resin worm wheel is formed by injection molding and includes a first end and a second end. The worm wheel is adapted to be driven by a worm. The worm wheel further includes: an engaging portion including a plurality of teeth engageable with the worm and a tooth space formed between the neighboring teeth; a first non-engaging portion adjacent to the engaging portion at the first end of the worm wheel and not engaging with the worm; and a first cutout portion formed at the first non-engaging portion continuously from the tooth space, the first cutout portion extending axially.

Abstract: A method of brazing an aluminum or aluminum alloy material, containing brazing an aluminum alloy brazing sheet that has an aluminum or aluminum alloy core material and, being clad on one or both surfaces, a filler alloy layer comprised of an Al—Si-based alloy and contains Mg incorporated at least in a constituent layer except the filler alloy layer, thereby to form a hollow structure whose one surface clad with the filler alloy is the inner surface, wherein the brazing is carried out in an inert gas atmosphere without applying any flux; and an aluminum alloy brazing sheet which satisfies the relationship: (X+Y)?a/60+0.5 and X>Y, wherein a (?m) represents the thickness of the filler alloy layer clad on the core material of the inner side of the hollow structure, and X and Y (mass %) represent the Mg contents of the core material and the brazing material, respectively.

Abstract: A method of brazing an aluminum or aluminum alloy material, containing brazing an aluminum alloy brazing sheet that has an aluminum or aluminum alloy core material and, being clad on one or both surfaces, a filler alloy layer comprised of an Al—Si-based alloy and contains Mg incorporated at least in a constituent layer except the filler alloy layer, thereby to form a hollow structure whose one surface clad with the filler alloy is the inner surface, wherein the brazing is carried out in an inert gas atmosphere without applying any flux; and an aluminum alloy brazing sheet which satisfies the relationship: (X+Y)≦a/60+0.5 and X>Y, wherein a (&mgr;m) represents the thickness of the filler alloy layer clad on the core material of the inner side of the hollow structure, and X and Y (mass %) represent the Mg contents of the core material and the brazing material, respectively.

Abstract: A vehicle shock absorbing system includes a plurality of shock absorbers each having at least three control conditions. A shock sensor is associated with each absorber for detecting a shock applied to the vehicle and providing a signal indicative of the shock to a calculator which calculates an extreme value having a maximum value and a minimum value. First, second and third shock operator circuits are provided for selecting conditions for each absorber.

Abstract: An automotive shock absorber producing a variable damping force. The absorber comprises a cylinder, a piston slidably fitted in the cylinder, two hydraulic chambers partitioned from each other by the piston inside the cylinder, a passage permitting the two chambers to communicate with each other, a rotary valve capable of varying the area of the passage, an acceleration sensor fitted in the cylinder, and an electronic control unit (ECU). The ECU controls the rotary valve according to the acceleration detected by the sensor which includes a vibrating diaphragm and a piezoelectric device.

Abstract: An actuator end cap is provided for an actuator having a housing and a cover connected together and defining a joint therebetween. The end cap has a skirt portion disposed in overlying relation to the joint to provide a fluid-tight seal for the joint. A breather hole is formed in the side of the cover and a semi-cylindrical groove is formed on the inner surface of the skirt of the end cap. One end of the groove is disposed in communication with the breather hole in the cover and the other end of the groove is in communication with a vent hole extending outwardly through the end cap.

Abstract: A tape core type coated optical fiber containing therein a plurality of single optical fibers, which comprises a housing for housing the tape core type coating optical fiber, the tape core type coated optical fiber branches into a plurality of single fibers inside the housing, the housing comprises a plurality of branches through which each of the single fiber passes.

Abstract: A rotary actuator is disclosed which changes the angular position of the rotary valve which is used to determine the attenuation presented by a shock absorber. The rotary actuator is disposed within a cylindrical piston rod of the shock absorber, and comprises a power transmission mechanism for driving the rotary valve for rotation between a first and a second position within a given range, a d.c. motor for driving the mechanism, a first stop mechanism for selectively stopping the rotation of the motor at a third position which is situated centrally within the given range, and a solenoid assembly for making the first stop mechanism operative. These components are disposed within the cylindrical piston rod in the sequence named from below to above. The power transmission mechanism includes a second stop mechanism which prevents the rotary valve from rotating outside a first and a second location which determine the given range.

Abstract: A rod actuator which includes a d.c. motor, a reduction gearing, a solenoid assembly which is used to define an intermediate stop position, and rotation stops. The angular extent through which an output shaft of the reduction gearing is rotatable is limited by a pair of limit stops. The solenoid assembly includes a plunger which is located intermediate the limit stops. A rotational stop is rotatably mounted on the output shaft and has a projection which is adapted to abut against the plunger to cease the motion of the rotational stop. The rotational stop is mounted on the output shaft so as to be rotatable relative thereto through a small angle by a lost motion, but is driven for integral rotation with the output shaft when such angle is exceeded. A lost motion connector is used so the angles of rotation where the rotation of the output shaft is stopped by the plunger during its clockwise and counter-clockwise rotations will be substantially equal.