Abstract: A device for joining a steering bar end piece to a basic steering bar comprises a basic steering bar clamp and a steering bar end piece clamp, the latter being arranged relative to the basic steering bar clamp in such a way that the longitudinal axis of the steering bar end piece clamp does not intersect the outline of the basic steering bar clamp, the two clamps being connected by a transition piece.In order to provide steering bar end pieces which are ergonomically shaped to put enough pressure on the front wheel of a bicycle on hard climbs, and yet obtain an unrestricted gripping space and a bar width which is not unduly increased, the transition piece is contiguous to the side of the basic steering bar clamp facing away from the basic steering bar, and extends essentially perpendicular to the longitudinal axis of the basis steering bar clamp, and has the steering bar end piece clamp located on the side facing away from the basic steering bar.

Abstract: The invention disclosed herein is a very durable, lightweight, front fork assembly for use on competition bicycles. The invention provides improved fatigue and impact resistance compared to prior art designs. The invention makes maximum use of advanced, high strength composite materials and high strength, lightweight metal alloys, improving its stiffness-to-weight and strength-to-weight ratios. The superior structural performance of the invention is provided by a unique section geometry and ply configuration that efficiently utilizes the material to maximize bending and torsional stiffness while minimizing weight. The improved strength also comes from the superior control of the molding process, made possible with a removable pressure bladder that remains connected to the pressure source, and is regulated, during the molding process.

Abstract: In a handle stem fixing device in a bicycle wherein a fork stem 10 is rotatably inserted into a head pipe 20 of a frame 2, the upper portion of the fork stem 10 projects out from the upper end of the head pipe 20 and, a stem-binding cylinder 30 is fixed on the upper portion of the fork stem 10 so as not to rotate. Many small protrusions are formed on the outer surface of the fork stem 10 where is pressed by the stem-binding cylinder 30. The coefficient of friction between contact surfaces of the fork stem 10 and the stem-binding cylinder 30 increases because of the protrusions. The coupling power acting between the fork stem 10 and the stem-binding cylinder 30 can thus be improved.

Abstract: A cover faces an end portion of a ball head cup attached to an end of a head pipe and is fitted on a fork stem. A rolling ball group is interposed between the ball head cup and the cover. A top cone is put on the rolling ball group from the cover side. The cover is formed of rubber or an elastic synthetic resin. The outer periphery of the cover is configured to be in contact with the inner periphery of the ball head cup. A cone ring inserted in the top cone and having a slit in its side wall is attached in the cover. Thus, the cover prevents the invasion of rainwater etc. through the slit of the cone ring.

Abstract: An improved assembled structure of a handlebar stem assembly and a fork of a bicycle wherein a handlebar stem assembly is inserted into a steer tube; the handlebar stem of the handlebar stem assembly is provided with a step which abuts against a pressure adjuster on a top end of the steer tube such that the pressure adjuster exerts a downward force to secure the upper bearing assembly in place; by relative movement between the cooperative tapered contact surfaces of the handlebar stem and tongue-shaped tube placed below the handlebar stem, the outer sides of the handlebar stem and the tongue-shaped tube abut against the inner wall of said steer tube in order to secure said handlebar stem to steer tube and obtain axial and radial positioning of the handlebar stem. The handlebar stem can be provided with external threads rather than a step for being engaged with a locking nut which acts as a step for abutting against the pressure adjuster.

Abstract: The handlebar stem and handlebar of a bicycle are secured together by a common joint having a joint seat defining a joint hole and an extension part having a half-cylindrical groove which is engageable by a cover having a corresponding half-cylindrical groove and a plurality of elliptical-shaped fastener holes. An open slot extends from the joint hole through the extension part for permitting the handlebar stem to be inserted through the joint hole and secured therein by a pair of fasteners. Similarly, the handlebar is disposed between the half-cylindrical grooves and secured in place by fasteners extending through the elliptical holes and the extension part.

Abstract: An improved quick release skewer system consisting of a connecting rod with a cam-actuated cap on one end and an expandable retaining nut on the other end. The device is specifically designed for application in mounting quick-release-skewer-hub bicycle wheels on bicycle forks having safety flanges which are intended to prevent the wheel from falling off the fork if the cam-actuated cap is accidentally loosened. Prior to the invention, to remove the wheel from the fork, the retaining nut had to be unscrewed. With the invention, once the cam-actuated cap is loosened, the expandable retaining nut is collapsed to further loosen compression forces on the bicycle fork and permit the wheel to be removed from the fork without unscrewing the nut. The expandable retaining nut prevents mishap in the event the operator fails to screw the nut back to its original position.

Abstract: A telescoping front fork of a bicycle which has a spring system which acts between an upper cylindrical housing and a lower cylindrical housing and includes at least one suspension spring, a supplemental spring and a spring in the rebound direction, each of which is made of a compressible elastic foamed, or expanded cellular elastomer. The spring constant of the supplemental spring is lower than that of the suspension spring. This arrangement has the advantage that acceleration peaks are reduced during the transition from a situation in which the two cylindrical houses are at rest and one in which the two cylindrical houses slide in relation to one another. The breakaway force is oriented to the weaker supplemental spring in connection with the rebound direction spring and as the support force increases, the suspension spring is compressed on a delayed basis, without any measurable additional breakaway force.

Abstract: A bicycle head tube sealing structure including a plug cap at the top end of the head tube, a packing block disposed inside the top tube of the front fork, a screw inserted through the plug cap and threaded into the packing block, a stop plate mounted inside the top tube of the front fork, a spring mounted around the screw and stopped between the plug cap and the stop plate, and an expansion ring mounted around the screw between the stop plate and the packing block when, the screw is turned in one direction, the packing block is forced upwards to squeeze the expansion ring against the top plate, causing the top tube and of the front fork firmly secured to the head tube; when the screw is turned in the reversed direction, the packing block is forced downwards to release the expansion ring, for permitting the top tube of the front fork to be disconnected from the head tube.

Abstract: A fastening device is capable of holding securely the head tube and the handlebar sleeve in the front fork of a bicycle. The front fork is provided respectively at both upper end thereof and lower end thereof with a restraining ring which is of an arcuate construction and is capable of bringing about an automatic calibration so as to ensure that the bearing sets of the front fork cooperate properly and rotate smoothly.

Abstract: A compact and portable device is easily attached to and concealed on a vehicle and capable of disrupting the electronic systems required for vehicle operation.

Abstract: This invention relates to front fork, telescoping type suspension systems for bicycles. The main focus of the invention is the brake bridge assembly, the fork crown assembly and the joinder of these assemblies to form the fork suspension. The brake bridge assembly serves two main functions: 1) it provides a stiff structural connection between the right and left telescoping struts, to reduce wheel wobble during high speed wheel impacts, and 2) it provides a structural support for the brake cable stop. The invention provides for increased stiffness and lower stresses in the brake bridge, which translates into improved directional stability for the front wheel, less displacement for the brake cable stop .(when the brake loads are applied) and improved fatigue life for the assembly. It also provides for a simpler and less expensive means for mounting the brake bridge to the fork assembly. The invention also encompasses the fork crown producing a lightweight structure with high torsional and bending rigidity.

Abstract: An anti-tangle mechanism includes a first ring element with first tooth elements and a second ring element with second tooth elements which engage with the first tooth elements, a plurality of balls disposed to a top of the first element and an under side of the second ring element, a cap having a first tubular portion for the first ring element mounted thereto and a first flange in which a first groove is defined for receiving the balls of the first ring element, a base having a second tubular portion for the second ring element mounted thereto and a second flange in which a second groove is defined for receiving the balls of the second ring element, the first ring element having a first fixing element extending laterally therefrom for a rear brake cable sheath engaged thereto and the second ring element having a second fixing element extending therefrom for fixedly engaging a distal end of the rear brake cable, an active cable having one end extending through the second tubular portion and being fixed to th

Abstract: A fork for use on a vehicle, such as a bicycle. The fork includes a steer tube, a crown and two fork legs. The steer tube includes a cylindrical main body portion, an upper insert portion intended for attachment to a handlebar-holding mechanism, and an inner reinforcing sleeve that adds strength to the steer tube. The main body of the steer tube and the fork legs are manufactured from resin and filament in order to yield a very high strength, lightweight and shock-absorbing fork.

Abstract: An anti-deforming device for a steerer tube includes a tubular element, a first element, a second element, a driving element and a cap, the tubular element having two ends each of which has a tapered periphery for respectively engagement with a corresponding tapered skirt of the first element and the second element, the tubular element having a plurality of slits defined therein and having a plurality of protrusions and flanges extending outwardly from a periphery thereof, the driving element having a threaded rod passing through a plane hole defined in the second element and threadedly engaged to a threaded hole defined in the first element to force the protrusions and flanges to contact against an inner periphery of the steerer tube and the cap mounted to a top of the steerer tube by passing a bolt through a hole defined in the cap and threadedly engaged to the threaded hole of the first element.

Abstract: A swivel mechanism for a bicycle includes a base fixedly mounted around a head tube of the bicycle. An annular sleeve is rotatably mounted around the base. A swivel ring is rotatably mounted between the upperside of the base and an underside of the annular sleeve. A cap is securely mounted around an upper end of a steerer tube of the bicycle. An upper connector has at least one first brake cable fixedly mounted on an outer periphery of the cap. A first wire is slidably mounted in the first brake cable and has a lower end fixedly mounted on an outer periphery of the annular sleeve. A lower connector has at least one second brake cable fixedly mounted on an outer periphery of the base. A second wire is slidably mounted in the second brake cable and has an upper end fixedly mounted on an outer periphery of the swivel ring.

Abstract: A mechanically joined steering assembly for supporting the wheel of a wheeled vehicle for steering movement relative to the frame of the vehicle. The steering assembly includes a crown attached by mechanical fasteners to blades and to a central steering portion joining the assembly to the frame of the vehicle. The parts joined are the blades (16), steerer (14), crown (12), and reinforcements (24). Mechanical fasteners serviceable with common tools provide a reinforced steering assembly of greater strength than welded or brazed constructions. This assembly allows the use of metallic, advanced composite, or thermoplastic components. Adjustments of axle location and steering geometry are made by sliding blades (16) up or down in crown (12). Blades (16), steerer (14), and crown (12) retain the original cold drawn strength of the metal used by mechanically joining without brazing or welding.

Abstract: A handlebar stem coupling module for a bicycle which includes a steerer tube, and a handlebar stem having a compression connector formed on one distal end thereof. The handlebar stem coupling module includes an urging sleeve securely mounted between an outer wall of the steerer tube and an inner wall of the compression connector, and an elongated slit laterally defined in the urging sleeve and extending along a length thereof.

Abstract: A steering bearing assembly for a wheeled vehicle, which includes a steerer tube rotatably passing through a head tube of the wheeled vehicle by disposing an upper and a lower steering bearing assemblies therebetween, the assembly has an upper race and a lower race and a plurality of balls rotatably received therebetween. A washer and an absorbing element are disposed between the upper race and the steerer tube. A force exerting element exerts a downward force on the washer to set the upper race in position.

Abstract: An adjustable bicycle handlebar mounting assembly comprises stem including a portion for mounting to the stem tube of a bicycle and two parallel jaws for receiving tubular elements. The jaws are adjustable to enable the tubular elements to selectively positioned in the length direction of the bicycle. A handlebar mounting element for use with the stem comprises two parallel bores which are mountable to the tubular elements, and a jaw orthogonal to the two parallel bores for housing a handlebar. The handlebar is adjustable in the width direction of the bicycle. A clamping element comprises seats for housing two half-handlebars, and a fastening element. The clamping element enables the half-handlebar position to be adjusted relative to the stem, while maintaining the half-handlebars fixed with respect to each other.

Abstract: A handle stem fixing device in a bicycle includes a stem-binding cylinder 30 fitted on an upper portion of a fork stem 10 and a screw cap 4 engaged with an upper portion of the fork stem 10, wherein a thread is formed on an outer surface of the fork stem 10, and the screw cap 4 has a bore with internal thread. The cap 4 can be engaged with the thread of the fork stem when the upper portion of the fork stem 10 projects out from an upper end of the stem-binding cylinder 30. While the screw cap 4 is tightened, the 10 stem-binding cylinder 30 is depressed in an axial direction thereof by the cap 4 and is fixed on the upper portion of the fork stem 10.

Abstract: An engagement between a connecting element and a front fork which has a crown portion and two shock absorbing devices are connected to the crown portion respectively, each one of the shock absorbing devices connecting to a connecting tube and the connecting tube connecting to an extending leg, each of the connecting tubes having a first support and a second support extending radially therefrom and the first and the second supports having a first and a second threaded holes respectively defined therein, a connecting element having two side plates and each of which having a first and a second holes defined therein and having a first and a second recesses defined in a surface facing to the first and the second supports so as to respectively receive the first and the second supports therein, a bolt extending through the first hole, the first recess and being engaged with the first threaded hole, a rod extending through the second hole, the second recess and being threadedly engaged with the second threaded hole b

Abstract: A high efficiency lightweight bicycle handlebar using strong, stiff fibers and a structural resin is disclosed. Relatively low modulus fibers are used in the axial direction and relatively high modulus fibers in the transverse or hoop direction. The hoop fibers are placed on the inside and outside diameters.

Abstract: In a handle stem fixing device in a bicycle wherein a fork stem 10 is rotatably inserted into a head pipe 20 of a frame 2, the upper portion of the fork stem 10 projects out from the upper end of the head pipe 20 and a stem-binding cylinder 30 is fixed on the upper portion of the fork stem 10 so as not to rotate. Many small protrusions are formed on the outer surface of the fork stem 10 where is pressed by the stem-binding cylinder 30. The coefficient of friction between contact surfaces of the fork stem 10 and the stem-binding cylinder 30 increases because of the protrusions. The coupling power acting between the fork stem 10 and the stem-binding cylinder 30 can thus be improved.

Abstract: Adjustable riding toys are provided in both bicycle and tricycle forms. The bicycle and tricycle each have an adjustable height axle connection. Multiple axle apertures are provided on mounting arms for adjustably receiving an axle. Methods of adjusting the bicycle and tricycle are also provided.

Abstract: Apparatus for mounting a cycle wheel at either the front or rear of a bicycle. Socket members having notches for receiving wheel supports are connected to the front and back forks of the bicycle. The apparatus includes a lock for locking the socket members against movement with the notches both oriented in a desired direction so that cycle wheel removal and installation is facilitated.

Abstract: An adjusting device assembly for making, a manual adjustment of a bicycle head bowl bearing comprises a front fork upright tube inserted into a head tube in which a bearing bowl is received. A bearing is received in the bearing bowl and can be located securely by an inner ring, which can be forced to move downwards by a locating ring which is in turn caused to move downwards by a clamping ring capable of being caused to move downwards by an adjustment bolt which can be fastened manually.

Abstract: A bicycle steering assembly is disclosed. The assembly has a threadless steerer tube passing through a head tube. Bearing assemblies are mounted at either end of the steerer tube. A stem assembly is fastened to the upper end of the steerer tube with an expansion bolt, which is preferably a wedge clamp, inside the bore of the steerer tube. The stem has an integral sleeve which extends over the upper end of the exterior surface of the steerer tube. The sleeve reinforces the steerer tube. The lower end of the sleeve is threaded to accept a threaded locking collar. Pre-load on the bearings can be adjusted by turning the locking collar. The stem assembly has few parts, fastens securely to the steerer tube, is robust and does not have projecting bolts which could harm a rider.

Abstract: A two-step and toothless bicycle head shaft bowl set has a two-step locking device making use of two semi-cylindrical members and an upper cover provided with a fastening bolt. The two semi-cylindrical members can be caused to effect the fastening by tightening the fastening bolt of the upper cover. The two-step locking device is capable of effecting an automatic alignment of centers of the component parts of the device in conjunction with arcuate lashing rings. The two-step locking device can also be used to enable the bearings to be positioned at an optimum horizontal angle so as to ensure a smooth rotation of the bearings and to eliminate the gap between two component parts.

Abstract: A bicycle handlebar upright tube assembly comprises a head tube, a handlebar upright tube, and an adjusting device. The head tube is fastened at the bottom end thereof with a front fork and at the top end thereof with two lugs. Each of the two lugs is provided with a fitting hole. The handlebar upright tube is provided at one end thereof with a fastening tube for fastening the bicycle handlebar and at another end thereof with a pivoting portion provided with a fitting hole. The adjusting device comprises a braking member and a shaft. The braking member is disposed in the fitting hole of the pivoting portion and is provided with an axial hole dimensioned to receive therein the shaft. The handlebar upright tube and the head tube are joined together adjustably such that the shaft of the adjusting member is received in the fitting holes of the two lugs of the head tube and in the axial hole of the braking member of the adjusting device.

Abstract: A bicycle front fork mounting structure including a locating socket mounted around the top coupling tube of the front fork and supported on a ball bearing above the head tube of the bicycle frame, the locating socket having an outer thread and a tapered center through hole, a split holding-down ring fitted into the tapered center through hole of the locating socket, and a lock nut threaded onto the outer thread of the locating socket to compress the holding-down ring by forcing an inside annular flange thereof into an outside annular groove on the holding-down ring, causing the holding-down ring and the locating socket to securely fix the front fork to the head tube.

Abstract: A steering damper for mountain bicycles including a closed cylinder filled with oil of high viscosity including a dam and vanes rotatable from center towards and away from the dam. The vanes are connected rotatably with the handlebars in reciprocal steering relationship with a steerable wheel. When the steerable wheel encounters an obstruction displacing it from center, the vanes are driven in the oil one towards and one away from the dam respectively decreasing and compressing and increasing and relaxing the corresponding volumes of the oil and damping the movement of the handlebars. The damping against the return of the handlebars and steerable wheel to center is suppressed by one-way valves in the vanes which open when the compressing vane is retracted, recesses in the cylinder providing a non-resistant path for the oil moving through the valve in the retracting vane.

Abstract: A pivot arm assembly secures a handlebar to a steerer tube and includes a shank having a sleeve for engaging with the steerer tube. The shank has a lateral aperture communicating with the cylindrical opening of the sleeve. Two clampers and a fastener are engaged in the aperture. The clampers each includes a tapered surface for engaging with the tapered surfaces of the fastener so as to force the fastener to engage with the steerer tube when the clampers are forced toward each other. The fastener has an embossed surface for solidly engaging with the steerer tube.

Abstract: Apparatus adapted for adjusting the position of articles held together by tensioned fasteners such as bolts having a head, a threaded shaft and a nut into which the shaft is threaded includes first and second washer members that are receivable in a stacked array on the bolt shaft between the bolt head and an adjacent surface of one of the articles. Each of the washer members has a diametrically extending semi-cylindrical groove in the surface thereof which faces the other washer member. A cam lever has opposed cam pins of arcuate non-circular cross-section receivable between the washer members within the grooves. Movement of the cam lever to first or second positions thereof will cam the washer members away from or towards each other respectively, thereby applying tension to or releasing tension from the bolt so as to clamp the articles together or release them for movement relative to each other.

Abstract: A handlebar assembly for a cycle includes a post having a number of teeth formed in the upper end, a wedge engaged with the lower end of the post, a shank having a number of teeth formed in one end for engaging with the teeth of the post, a stub rotatably engaged in the shank, a bolt is threadedly engaged with the stub, engaged through the post and threadedly engaged with the wedge, so that the post can be fixed in the bicycle and the shank can be fixed to the post when the bolt is threaded.

Abstract: A suspension system for the front wheel of a bicycle or motorcycle, which has a minimum amount of friction. The suspension system includes an upper and a lower swingarm, with a spring and elastomer combination, which works as a friction damper on the inside coils on the spring. The relative angle and length of the swingarm to one another, permits the linear movement of the wheel on impact, to optimize suspension performance. The invention also desirably incorporates various elements which provide for the structural rigidity of the suspension assembly and light weight. In particular, the design preferably incorporates standard bicycle or motorcycle components. For example such components may include wheels, brakes, axles and steering components.

Abstract: An upper steering assembly for a bicycle includes a head tube, a steerer tube passing through the head tube, a bearing assembly including a lower and an upper race, the upper race being a ring element and having a vertical inner peripheral surface, mounted on a top of the head tube and around the steerer tube, a rotational socket having a threaded inner periphery and including an upper clamping portion and a lower skirt portion which has an annular groove in an underside thereof for retaining the bearing assembly, the skirt portion having a vertical outer peripheral surface for engaging with the vertical inner peripheral surface of the upper race, and a compression socket mounted around the steerer tube and having a longitudinal slit and including an upper clamping section and a lower tubular section which is in threading connection with the inner periphery of the rotational socket.

Abstract: A bicycle with a delayed-return suspension fork with two shock-absorbing units. Each shock-absorbing unit has an upper tube assembly telescopically received in a lower tube assembly with an inner tube assembly slidably retained within the lower tube assembly. An elongate cylinder extends upwardly from a base of the lower tube assembly. An elongate piston extends downwardly from a top of the upper tube assembly and is slidingly received in a distal end of the elongate cylinder. A series of resilient tubular cushions are mounted about the elongate piston. The inner tube assembly defines a chamber in order to contain a fluid. A conduit, a washer, a spring and a positioning seat are contained. When the upper tube assembly travels into the lower tube assembly, fluid is urged through the conduit, the fluid further urges the washer, spring and positioning seat away from the conduit permitting rapid passage of the fluid.

Abstract: A hanger means for a wheeled vehicle comprises a fastening member which is adapted to be securely mounted above a head set of a wheeled vehicle, and a hanger which has first and second ends, a brake cable passes through the first end of the hanger and the second end of the hanger is pivoted to the fastening member allowing the hanger to be pivotable between a locked lower position and an unlocked upper position where said head set is accessible.

Abstract: A locking mechanism comprises a bicycle fork tube which is rotatably received in a bicycle head tube. This fork tube has a plurality of elongate slots at its tubular wall below the top end portion. A stem member has a collar thereof which is removably enveloped around the top end portion of the bicycle fork tube. A tubular housing containing an actuating block and wedge members is removably received by the fork tube for retaining the stem member to the fork tube thereof.

Abstract: An improved locking hinge for use in a folding bicycle is equipped with a lever arm which is in pivotal connection to a locking hook at the bottom end thereof. The locking hook also pivotally mounted onto the handlebar of a bicycle has a retaining recess which is made to engage with a locking pin mounted onto the steering stem of the bicycle so as to get a folding bicycle in use as long as the lever arm is pushed toward the erected handlebar which is put in linear alignment with the steering stem already. Besides, a securing spring plate is used to retain the lever arm in place so as to prevent the locking hook from disengagement from the locking pin as the bicycle is in use. To get the bicycle folded, the securing spring plate is lifted upwardly to permit the lever arm to pried outwardly, resulting in the locking hook disengaged with the locking pin. Then the handlebar and the steering stem are separated with each other and put side by side in a folding manner.

Abstract: An engaging device for securing a handlebar stem of a bicycle includes a handlebar stem which has vertical and level portions, the level portion having an opening formed in a side wall of the level portion and communicating to an interior of the vertical portion, the vertical portion being a tubular element for receiving an upper end of a front fork therein. A main tapered element and two side tapered elements are disposed in the level portion through the opening, the main tapered element having a recess formed in a rear end thereof for engaging with the front fork and having a slant formed on lateral sides thereof, the side tapered element having a slant corresponding to that of the main tapered element. The main tapered element is forced to push toward the front fork with the recess by the side tapered elements when threading the bolt.

Abstract: The invention relates to a front fork (10) for cycles, made of composite material, comprising two fork arms (12, 14) which unite to form an upper fork head (18). The fork head (18) comprises two rearwardly directed projections, an upper projection (30) and a lower projection (28). The two projections carry pivot portions (36, 38) which cooperate with complementary pivot portions (32, 34) provided on the steering head (24) of the frame. The fork arms (12, 14) are formed substantially linear and their centrelines are arranged at least generally in a plane in which the centreline of the fork head (18) also extends. This plane is located forwardly of the steering axis (YY) at a distance which depends on the dimensions of the cycle and is suitable to ensure the stability of the cycle.

Abstract: A fixing device for securing a handlebar stem of a bicycle includes a handlebar stem having vertical and level portions. The level portion has a receiving element formed on a free end thereof for securing a handlebar therein, the vertical portion having a scroll-like tube with one end thereof overlapping the other to form an inner part and an outer part. An opening is formed in the outer part and a first lug is formed on an edge of the opening and a second lug is formed on inner part and extends outwardly through the opening, such that the tube securing an upper end of a front fork by screwing a bolt therethrough.

Abstract: A headset for a bicycle includes an upper bearing assembly and a lower bearing assembly between which is disposed a head tube and a steerer tube is inserted through head tube and rotatably engaged between the two assemblies. The upper bearing assembly has a bearing with a plurality of rollers each roller is disposed in an inclined fashion by 10-20 degrees regarding to a vertical line of said assembly.

Abstract: An adjustable bicycle handlebar stem which is based on a C-clamp enlarged adequately to accommodate a pair of half-cylindrical upper and lower adjusting members. The adjusting members are made as a hollow structure to decrease the weight of the bicycle. The upper and lower adjusting members are interlocked through the meshing of a keyway and slot. Since both adjusting members contain two symmetric eccentric curved notches to accommodate the bicycle handlebar, the position of the handlebar can be changed using the eccentric changes of the center of the adjusting members. The fore-and-aft distance and upper-and-lower angle of the handlebar can then be adjusted.

Abstract: A bicycle handlebar stem mounting device which includes a handlebar stem having a hollow tapered mount at one end mounted on the head tube of a bicycle and a clamping device at an opposite end to hold a handlebar, a tapered ring fixated into the tapered mount and mounted around the head tube, a top cap covered on the tapered mount fasten a handlebar stem, an actuating disk engaged inside the tapered mount, a hollow truncated rubber cone inserted in the head tube, a screw nut received inside the truncated rubber cone, and a screw bolt screw up with the screw nut to connect the top cap, the actuating disk, and the truncated rubber cone together, wherein turning the screw bolt inwards causes the truncated rubber cone to be deformed, and therefore the truncated rubber cone firmly stops against the inside wall of the head tube.

Abstract: The steering bearing assembly includes a bearing assembly with an upper race that has a circular inner periphery and a tubular protrusion that extends axially from the inner periphery. The tubular protrusion is provided with a plurality of axial splits and an externally threaded wall which tapers gradually toward a free end thereof. A positioning seat with an internally threaded wall that complements the external wall of the tubular protrusion is mounted around the latter and above the upper race in such a manner that the free end of the tubular protrusion extends beyond the uppermost portion of the positioning seat. The tubular protrusion retracts radially and inwardly upon tightening of the positioning seat.

Abstract: Locking the headset of a steering post of a bicycle is accomplished by this invention where the steering post or threaded body projects coaxially through a cylindrical journal mounted at the front end of the bicycle frame. Bearing cups are secured in each end of the journal to accommodate thrust bearings. Each thrust bearing in turn is engaged by a cone. The lower cone is mounted stationary on the fork-steering post of the bicycle while the upper cone is threaded engaged to the mounting post body and is drawn hand tight against the upper thrust bearing. The upper cone is locked against rotational movement by a lock nut threaded on the post body above the upper cone and spaced from the upper cone. The locking configuration is achieved by one or more screws extending through an opening in the lock nut and engaging the upper cone to jam the threaded connections between the lock nut, upper cone and steering post body.

Abstract: Three wheel vehicle apparatus includes a pair of rear wheels and a front driving wheel. The front driving wheel is powered through a hand crank system, and the front, driving wheel is urged to a center, straight ahead position, by a tension spring connected between a main vehicle frame and elements of the front wheel.