Abstract: When a tensile force of at least a predetermined value is applied to a webbing, a webbing retractor allows the webbing to extend over a length increased beyond that available from mere tightening of the webbing wound on a take-up spindle by the tensile force. The retractor includes a base; the take-up spindle carrying the webbing fastened at one end thereof to the take-up spindle; a lock device for locking rotation of the take-up spindle in a webbing-releasing direction; and a webbing-extension increasing member capable of undergoing a deformation or collapse in a transmission route of the tensile force from the take-up spindle to the base upon application of the tensile force subsequent to locking of the take-up spindle by the lock device.

Abstract: The present invention provides a steel for a corrosion-resistant rolling part having excellent corrosion resistance, high quenching and tempering hardness, and excellent workability for use in linear bearings, ball screws and rolling bearings of industrial machinery which must be strictly prevented from undergoing environmental contamination due to oil and grease. The steel comprises 0.5% or more and 0.7% or less by weight of carbon, 0.1% or more and 1.5% or less by weight of silicon, 0.1% or more and 2.0% or less by weight of manganese, 3.0% or more and less than 6.0%, preferably 4.0% or more and 5.5% or less, by weight of chromium, 0.05% or less by weight of phosphorus, 0.03% or less, preferably 0.01% or less, by weight of sulfur and 0.0015% or less by weight of oxygen, and may further comprise at least one of 0.05% or more and 2.0% or less, preferably 0.05% or more and 1.0% or less, by weight of molybdenum and 0.1% or more and 0.8% or less, preferably 0.2% or more and 0.

Abstract: A linear guide bearing apparatus includes a guide rail having an H-shaped cross section and an axially extending through bore. A slider having an I-shaped cross section is fitted into the through bore for movement in the axial direction. The slider is formed of a table member, a leg member, and a distance member formed of an elastic body and sandwiched between the table member and the leg member. The table member, the distance mebmer, and the leg member are integrally coupled by a bolt penetrating these members vertically. A clamping spring member is threadedly engaged with a low end of the bolt so that the elastic distance member is compressed vertically and the table member and the leg member are elastically pressed against the guide rail by the clamping spring member through the elastic distance member. As a result, balls inserted between the ball rolling grooves of the guide rail and the slider are preloaded at a constant pressure.

Abstract: The belt tentioner includes a solid damping device between the pivotal member and the fixed member, and the amount of deformation of the solid damping device and that of a spring are adapted to be set independently of each other.This permits the vibration damping operation by the solid damping device and the tensioning operation by the spring to be performed under the respective optimum conditions.

Abstract: A cap for a hub unit having a projecting wall so that when the cap is attached to a hub unit for an axle is of an automobile, the projecting wall prevents grease in the rotary portion of the hub unit from moving to the inside of the cap.

Abstract: A multiple-imaging charged particle-beam exposure system includes a charged particle beam source, and a screen lens having lens apertures therein. A charged particle beam is emitted from the charged particle beam source. A beam emerging from each of the lens apertures of the screen lens is irradiated on an object to be exposed, to effect exposure on the object. An image forming electrode is interposed between the screen lens and the object for focusing beams emerging from the screen lens to form images at the image forming electrode. An acceleration/deceleration correcting lens is interposed between the image forming electrode and the object for limiting divergency of the images formed at the image forming electrode. A bias voltage controller applies a bias voltage relative to a potential at the image forming electrode to a surface of the object. Alternatively, a beam limiting aperture plate having beam limiting apertures therein is interposed between the charged particle beam source and the screen lens.

Abstract: A rolling bearing, in which at least one of the races and a rolling element of the rolling bearing is made of a raw steel which is free from a Al.sub.2 O.sub.3 or an Al.sub.2 O.sub.3 -base inclusion particle with a 13 .mu.m or more average particle size; but which includes 80 or less Al.sub.2 O.sub.3 or Al.sub.2 O.sub.3 -base inclusion particles with a 3 .mu.m or more average particle size for each tested area of 165 mm.sup.2. The rolling bearing provides a very long life rolling bearing even under the severe conditions of a high bearing, the presence of a deflection in a bearing housing, defective lubrication, etc.

Abstract: A dynamic pressure type bearing is applicable to a precision mechanical equipment. The bearing includes a hollow inner cylinder to fit a rotatable shaft. The inner cylinder is made of a thermosetting resin containing a 5 wt % to 75 wt % heat treated phenol resin powder and a 5 wt % to 75 wt % silicon dioxide, the total content of the phenol resin powder and the silicon dioxide being 50 wt % to 80 wt %. A spindle unit includes the bearing and a spindle made of an alloy containing aluminum as a main element. The bearing has a superior wear resistance, frictional characteristic and molding accuracy of the inner cylinder. The superior frictional characteristic of the inner cylinder allows a relatively soft spindle to be used in a spindle unit.

Abstract: A webbing guiding structure suitable for use in an automobile seat belt system includes a slide rail and a movable runner displaceable along the slide rail. The slide rail defines a slide surface for allowing the movable runner to run on the slide surface. The movable runner is provided with a slidable shoe at a position where the movable runner is brought into contact with the slide rail. A contact surface of the slidable shoe, which is brought into contact with the slide surface of the slide rail, and the slide surface are arranged at an angle relative to each other as viewed in a direction transverse to the slide rail.

Abstract: A telescopic steering column device comprising: a drive-side steering shaft; a driven-side steering shaft; a cylindrical inner column having an elongated hole in the axial direction; a cylindrical outer column having an opening corresponding the elongated hole in the inner column, fastened on the outer surface of the inner column so as to be telescopically combined with the inner column; a lock bracket having a thread hole corresponding the opening in the outer column; a lock member having a through hole at the central portion, the lock member being arranged to be fitted within the opening; and a lock screw having the inner portion which is engaged with the lock member and a projection which is formed at the central portion of the inner portion, which is rotatably inserted into the through hole of the lock member and which is inserted into the elongated hole in the inner column so that the axial displacement of the inner column with respect to the outer column is allowed while the rotation of the inner column

Abstract: An input shaft of a toroidal-type infinitely variable transmission is supported at opposite ends by respective bearings which are secured to a housing, and input and output disks and power rollers are mounted at an intermediate portion of the input shaft. The input shaft has a flange at one end which is connected to an engine, and a pressure adjusting Belleville washer is interposed between the inner end face of the flange and the outer end face of the bearing to bias the input shaft in the direction of the engine so that a predetermined pressing force is applied to the input and output disks and the power rollers during a period in which a small input torque is transmitted to the input shaft. As the input torque increases, the input shaft is moved axially together with a loading cam against the spring force of the Belleville washer, and the inner end face of the flange and the outer end face of the bearing directly abut each other so that a required reaction force is obtained.

Abstract: A tiltable steering device comprises a support bracket fixed to a vehicle body, a steering column having one end pivotally secured to the support bracket by means of first horizontal shafts, a first engaging member fixed to the underside of the steering column and having a lower surface projecting downward in an arcuate form centered at the axis of the first horizontal shafts and having first engaging teeth formed on the downwardly projecting lower surface thereof, a second engaging member pivotally supported at its one end on a second horizontal shaft provided on the support bracket and provided with second engaging teeth provided on the upper edge of the other end thereof and engageable with the first engaging teeth; and a hanger plate rockable to cause the first and second engaging teeth to be brought into and out of engagement with each other and having a slot formed in one end thereof.

Abstract: A mechanism for the positional adjustment of an anchor for a webbing in a passive seat belt system for a vehicle is described. The mechanism includes a slide rail for guiding a slider which carries the webbing fastened thereon, an adjustment base fitted on the slide rail and defining a plurality of interlocking holes at predetermined longitudinal intervals therein, an anchor base transversely surrounding the slide rail and adjustment base for guided movement along the slide rail and adjustment base, said anchor base being engageable with the slider at an occupant-restraining position, and a latch engageable with one of the plural holes formed in the adjustment base so as to lock the anchor base on the adjustment base, thereby determining the position of the anchor base relative to the adjustment base.

Abstract: A clutch release bearing apparatus comprises a clutch release bearing and a holding mechanism therefor. At a location of the holding mechanism where a driving member applies a driving force for clutch releasing, a shift member shiftable in a direction perpendicular to an axis of the bearing is disposed.

Abstract: A rolling bearing includes an outer race, an inner race, many balls interposed between the outer race and the inner race, and a retainer for holding the balls at equal intervals in a circumferential direction of the outer peripheral surface of the inner race. At least the balls among the outer race, the inner race, and the ball are coated with a lubricating film, and the retainer is made from linear-chain polyphenylene sulfide as a matrix and containing at least a fluoroplastic by 10 to 60 wt %.

Abstract: A retractor is provided with a detector for the amount of a webbing wound on a retractor shaft. The detector is of the type that the amount of the webbing wound on the retractor shaft is determined on the basis of the number of revolutions which the retractor shaft has undergone. The retractor includes first and second internal gears, at least one planetary gear and a switch actuator. The first and second internal gears have different numbers of teeth, and are arranged side by side in the direction of an axis of the retractor shaft. The first internal gear is fixed on the base while the second internal gear is rotatably supported on the base. The planetary gear is provided on the retractor shaft and is maintained in meshing engagement with both the first and second internal gears. A switch actuator is formed on the second internal gear and a switch is provided on the base.

Abstract: A magnetic sensor actuation system is disclosed, which is suitable for use in a passive seat belt system of the type that a slide anchor with a webbing carried thereon travels along a guide rail having at least one bent section. The actuation system includes at least one magnetic sensor provided near the guide rail and a magnet provided on the slide anchor to actuate the magnetic sensor. Upon actuation of the magnetic sensor, the magnet is located on a line extending between the center of turning movement of the slide anchor along the bent section of the guide rail and the midpoint of an area of contact between the slide anchor and the guide rail.

Abstract: A passive seat belt system is constructed of a guide rail, a slider movable along the guide rail, a webbing, a drive member for driving the slider, a bushing for connecting the drive member and slider in a state maintained in contact to each other with a gap left between the drive member and guide rail at the position of the bushing and on a side opposite to the slider, and contact members provided on the drive member with the bushing interposed therebetween. The contact members are in contact with the guide rail on a side opposite to the slider. Instead of the bushing and contact members, a cam may be provided between the drive member and slider for causing the slider to move in a direction away from the drive member when the drive member moves in a longitudinal direction.

Abstract: A control device for a spindle apparatus including a spindle in a housing supported by bearings includes a sensor that senses the axial elongation of the spindle during rotation and outputs monitoring signals representing whether such an elongation exists. The monitored signals are compared and a variation value per unit time is calculated. A switching circuit receives the variation value and stops rotation of the spindle when the variation value is equal to or greater than a preset reference value by detecting abrupt elongation in the axial direction of the spindle immediately before seizure may happen and rapidly stopping rotation of the spindle to prevent seizure of the spindle.

Abstract: A collapsible steering column apparatus comprises a steering shaft in which a steering wheel is fixed to one end and a whole length in the axial direction can be contracted and a steering column in which a whole length in the axial direction can be contracted by inserting the edge portion of an inner column to the inside of the edge portion of an outer column. A first engaging portion is formed near the edge portion of the outer column. The first engaging portion comprises a pair of first arc portions which face each other and are respectively come into contact with the outer peripheral surface of the edge portion of the inner column and a pair of second arc portions which are arranged between the pair of first arc portions and are away from the outer peripheral surface of the edge portion of the inner column by having a radius of curvature which is smaller than a radius of curvature of the outer peripheral surface of the edge portion of the inner column.