Abstract: A bicycle handlebar clamp is configured to be attached on a handlebar. The bicycle handlebar clamp includes an outer surface, a handlebar engagement surface and an attachment bore. The handlebar engagement surface is configured to be engaged with the handlebar. The fixing nut receiving aperture is configured to receive a fixing nut. The fixing nut receiving aperture extends through the handlebar clamp from the outer surface to the handlebar engagement surface. The attachment bore is configured to receive an attachment pin. The attachment bore and the fixing nut receiving aperture intersect each other. A bicycle handlebar clamp assembly is provided with the bicycle handlebar clamp.

Abstract: An adjustable pedal that includes a first body with a shoe, a second body pivotable about a shaft, the first body being movably coupled with respect to the second body, a third body being pivotable with respect to the second body and movably coupled with respect to the first body, the third body being coupled to an actuator through a coupling, and a control device suitable for adjusting the position of the pedal. The first body and the second body are telescopically coupled to one another, the control device controlling the distance between the rotating shaft and the coupling by moving the three bodies relatively to one another, keeping the ratio of the distance between the shaft and the shoe and the distance between the shaft and the coupling substantially constant.

Abstract: A bicycle crank assembly is provided with a first sprocket, a second sprocket, a crank arm, a sprocket fixing structure and an alignment tube. The first sprocket includes a plurality of first teeth and at least one first mounting portion having a first mounting opening. The second sprocket includes a plurality of second teeth and at least one second mounting portion having a second mounting opening. The crank arm includes at least one sprocket attachment portion having a third mounting opening. The sprocket fixing structure secures the first and second sprockets to the crank arm via the first, second and third mounting openings. The alignment tube extends through at least two of the first, second and third mounting openings.

Abstract: The actuator has a gear unit with a gear housing and a motor unit with a motor housing and an internally located rotor with a drive shaft, and a cylindrical bearing housing on the drive side. The bearing housing protrudes, along with a bearing and the drive shaft ducted therein, into an opening in the gear housing. The motor housing is flange-mounted, along with a drive shaft mounted therein, to the gear housing. The outside of the bearing housing and the inside of the opening in the gear housing have been geometrically mutually harmonized such that clamping points and tension-free places will form between them when the actuator has been assembled. The pretensioning force resulting therefrom produces a permanent frictional engagement between the outer circumference of the bearing and the bearing support or the bearing shell located opposite it. The operating life of an actuator of such type is increased.

Abstract: A bicycle shifter is provided with a shifter housing, a winding member and an indicator unit. The winding member is movably coupled to the shifter housing. The indicator unit includes an indicating member and an adjustment member. The indicating member is operatively and adjustably connected to the winding member. The adjustment member adjusts a position of the indicating member relative to the winding member.

Abstract: Tapered roller bearings and gas turbine engine systems involving such bearings are provided. In this regard, a representative bearing cage for a gas turbine engine includes: an outer cage rim and an inner cage rim; the outer cage rim having a rounded edge at a location of contact between the outer cage rim and a roller.

Abstract: In a resin double-helical gear formed by injection-molding, smooth meshing of teeth can be performed for rotation of the resin double-helical gear in both directions, and occurrences of thrust-direction load and noise can be prevented. Peak-side tooth flanks 7c and 7d and valley-side tooth flanks 7e and 7f of a tooth 7 in a resin double-helical gear 1 are formed such as to become farther away from peak-side tooth flanks 9c and 9d and valley-side tooth flanks 9e and 9f of a standard tooth 9 in an inward direction, the closer the peak-side tooth flanks 7c and 7d and the valley-side tooth flanks 7e and 7f are to a tooth width direction center section 3 from one tooth width direction end section 4a and another tooth width direction end section 4b. As a result, meshing escape sections g (g1 and g2) and h (h1 and h2) having dimensions in a tooth thickness direction that increase towards the tooth width direction center section 3 are formed on the peak-side tooth flank side and the valley-side tooth flank side.

Abstract: A swing mechanism for a construction machine is provided with a center frame 3 having a pinion insertion hole 3c, an inner race having an internal gear and mounted on a side of an undercarriage, an outer race 1b rotatably arranged surrounding the inner race and provided with the center frame secured thereon by bolts 8a, a pinion maintained in meshing engagement with the internal gear of the inner race, and a pinion drive device. A pin fit-in hole 3d arranged in the center frame 3 such that a knock pin 6 fixed on the outer race 1b is fitted in the pin fit-in hole to position the center frame 3. To arrange the pin fit-in hole 3d in the center frame 3, a pin fit-in hole portion 20 through which the pin fit-in hole 3d is formed is locally arranged such that the pin fit-in hole portion 20 extends toward the pinion insertion hole 3c to have a center of the pin fit-in hole 3d located on a center connection line S.

Abstract: A ball screw is provided having a ball roller screw (1) and a screw nut (2) arranged thereon, whereby the balls (3) are arranged to endlessly circulate in a ball channel (6) defined by ball tracks (4, 5) on the ball roller screw (1) and the screw nut (2). The ball channel (6) includes a load section (7) wound about the ball roller screw (1), the beginning and end of which are endlessly connected by a load-free return section (8). A minimum of two and a maximum of four balls (3) are housed in a common ball cage (10, 22), the cage pockets (11) of which each house one of the balls (3), whereby the ball cage (10, 22) includes discs (12, 15) at the axial ends thereof and between adjacent balls (3), that engage the ball channels (4, 5), and provided on the sides thereof facing the balls (3) with a concave receptacle (14) for the balls (3).

Abstract: A tapered roller bearing has an increased load capacity and has a decreased maximum face pressure on the raceway surfaces without lowering the rigidity of the cage. The tapered roller bearing includes an inner ring, an outer ring, multiple tapered rollers rollably disposed between the inner ring 2 and the outer ring 3, and a cage for holding the tapered rollers at predetermined circumferential intervals, wherein the roller coefficient ? thereof is larger than 0.94. Herein, ?=(the number of the rollers×the average diameter of the rollers)/(?×PCD).

Abstract: A shift operating device for a bicycle comprises a mounting member structured to be mounted to the bicycle, a cable coupling member coupled to the mounting member for moving a cable in a cable pulling direction and a cable releasing direction, a positioning unit that selectively maintains the cable coupling member in a plurality of operating positions, and an input member that moves in a first direction and in a second direction different from the first direction, and an action member rotatably coupled to the mounting member and separate from the input member. The action member rotates to transmit movement of the first operating member to the positioning unit such that the cable coupling member moves from an origin operating position toward a destination operating position when the first operating member moves in either of both the first direction and the second direction.

Abstract: The lever (11) is fitted with two rollers (20A, 20B) which are supported by a core (21) provided with a mounting bore (21B) on an articulated shaft, wherein the rollers (20A, 20B) are both mounted between two webs of a pair of webs which are added to the core (21). The webs (22A, 23B) are on the whole planar. A first web (22A) of each pair of webs is partially engaged in a hollow housing (21C) created on the lateral surface (21D) of the core (21). The second web (23B) of the same pair is maintained at a distance from the first web. The hollow housings (21C) are created on the two opposite lateral surfaces (21D) of the core (21) of the lever (11).

Abstract: A rotary damper includes an operating part mounted in an interior in a vehicle in such a manner that the operating part can be introduced or withdrawn, an operating part case that guides a path of the operating part, a pinion gear mounted to one side of the operating part and a guide rail rotatably mounted to the operating part case such that the pinion gear can be engaged with the guide rail. Further, a separation preventing protrusion is provided at a portion of the guide rail, where the pinion gear starts to move in a curvilinear form, the separation preventing protrusion configured to support an outside surface of the pinion gear.

Abstract: A handlebar grip for a transportation vehicle includes a grip body having a body portion and an annular flange provided on one end of the body portion, a tightening member mounted on the outer surface of the annular flange, a locating ring mounted on the outer surface of the annular flange in such a way that the tightening member is placed in between the locating ring and the annular flange, and a fastener inserted into a through hole of the locating ring. When the fastener is fastened up, one end of the fastener leans against the outer surface of the tightening member such that the annular flange of the grip body is pressed by the tightening member to be radially inwardly deformed and compressed against the periphery of a handlebar of the transportation vehicle. Thus, the handlebar grip is firmly fixed to the handlebar of the transportation vehicle.

Abstract: An actuator includes a motor, an input rotation member driven by the motor, an input contacting portion formed on the input rotation member, a bush disposed so as to be relatively rotatable to the input rotation member, a first contacting portion and an engaging portion formed on the bush, a spiral spring including an outer circumferential hook portion in contact with the input contacting portion of the input rotation member, and an inner circumferential hook portion engageable with the engaging portion of the bush, the spiral spring storing a rotational force of the input rotation member as an potential energy via the input contacting portion, an output member disposed so as to be relatively rotatable to the input rotation member, an output contacting portion formed on the output member and in contact with the outer circumferential hook portion of the spiral spring; the output contacting portion transmitting the potential energy stored in the spiral spring to the output member; wherein the bush includes a se

Abstract: A drive mechanism include a movable element which has at least one bearing arm; a linear guide shaft for linearly guiding the movable element without rotating; a driving device driving the movable element linearly along the linear guide shaft; a driven member driven, by the driving device, in a direction parallel to the linear guide shaft; a first guide hole formed on the bearing arm; a second guide hole formed on the driven member, the first and second guide holes being identical in size and in cross sectional shape; a tubular bearing member fitted into the first and second guide holes, the linear guide shaft being fitted completely through the tubular bearing member to be freely slidable therein; and a retaining device formed on the tubular bearing member and the driven member to prevent the tubular bearing member from moving relative to the driven member.

Abstract: A gear having a thin-walled section formed on one end face among two end faces of a tooth in a tooth-width direction is provided. A portion of the thin-walled section is projected and formed so as to serve as an overhanging section. The overhanging section prevents backlash. A thickness T3 of the overhanging section, a thickness T2 of a tooth flank corresponding section, and a thickness T1 of a tooth crest corresponding section positioned therebetween satisfies the relation T1<T3<T2.

Abstract: A handlebar for a bicycle has first and second laterally extending portions disposed outboard of a central attachment portion. Each of the first and second laterally extending portions is preferably winged-like in configuration to provide reduced air resistance. The first laterally extending portion includes an aerobar clamping mechanism, and the second laterally extending portion includes a second aerobar clamping mechanism. Each aerobar clamping mechanism includes a tapered receiving sleeve having an axis that is generally parallel to a travel axis of the handlebar. A collect having a major axis that extends in a plane generally parallel to the direction of travel of the bicycle is receivable within the receiving sleeve. The collet includes a plurality of axially extending slots that permits the diameter of the collet to be varied. The collet includes an aerobar receiving slot having a major axis that is generally co-linear with the axis of the collect, and is provided for receiving an aerobar.

Abstract: Ball screw, having a spindle nut (2) which may be provided on a recirculating ball screw (1) and on the inner circumference of which turns (3) of ball grooves (4), helically wound around an axis, are provided in which balls (5) can roll, at least one return element (8), arranged on the outer circumference of the spindle nut (2) and provided with a return duct (9) for the balls (5), at its two ends connecting a start of a turn (3) to an end of a turn (3) in order to permit a continuous recirculation of the balls (5), the return element (8) between its two ends being supported on a support (15, 21), the return element (8) being resiliently supported by means of at least one spring element (14) on the support (15, 21).

Abstract: A transmission equipped with a cable-type shift device comprises a control shaft to control a shift change with rotation and axial-direction movement thereof, an outer lever to be rotated by a shift-direction operation of a change lever, and a counterweight to rotate with the rotation of the control shaft, but not to move with the axial-direction movement of the control shaft. The counterweight includes first and second weight portions, an arm portion to interconnect these weight portions, and a support axis disposed so as to extend vertically. The support axis rotatably supports a substantial gravity center of the first and second weight portions and the arm portion. Accordingly, the counterweight can be supported smoothly and the shift feeling can be improved properly with a relatively small force for the select-direction operation of the change lever.