Abstract: A spokeless bicycle system for providing a bicycle that does not have spokes within the wheels. The inventive device includes a frame having a seat structure and handle bars, a rear bracket having rear bearings within that rotatably engages a rear wheel, a front bracket having front bearings within that rotatably engages a front wheel, and a drive train that engages the rear wheel for driving the rear wheel. The rear rim of the rear wheel includes a rear groove that receives the plurality of rear bearings. The rear rim of the rear wheel includes a rear gear that is engaged by a drive sprocket from the drive train. The front rim of the front wheel includes a front groove that receives the plurality of front bearings.

Abstract: An improved stem for a bicycle comprises a pivot member having a lateral member and a locking member attached to the underside of the lateral member, wherein the pivot member has two free ends each having a pivot portion and the locking member has two free ends as well; a column member having a first connecting mechanism at the top thereof for pivotally connecting to the pivot portion; and a sleeve member securing a handlebar, and being provided with a second connecting mechanism at the free end thereof for pivotally connecting the other pivot portion of the pivot member, whereby the locking member can be operated to move so that each free end thereof is fixedly attached to or detached from the first connecting mechanism and the second connecting mechanism so as to achieve the adjustment of the angle between the column member and the pivot member, and the angle of the handlebar, at the same time.

Abstract: A bicycle brake device is coupled to a bicycle frame section, which includes one or more bicycle brake mounting structures. The bicycle frame section can be either a portion of a front fork or rear fork of a bicycle. The brake device is preferably a caliper brake device such as a cantilever brake device, a side pull brake device, or a center pull brake device. The caliper brake device has a pair of brake arms, which are pivotally coupled to either the front fork or rear fork for selectively engaging the rim of the bicycle wheel. In certain embodiments, the bicycle brake mounting structures are U-shaped brackets, which are fixedly coupled to the frame member or members. In other embodiments, the bicycle brake mounting structures are formed by a pair of separate tubular frame members, which are fixedly coupled to the remainder of the bicycle frame section.

Abstract: A structural riser system and organization for use in, and adjacent the front of, a motorcycle, to translate a steering force, which is applied to a handlebar structure, directly to the two fork legs in a front fork assembly in the motorcycle. Elongated risers in the system are anchored to the top of a triple-tree structure, and extend therefrom generally upwardly in axial alignment with the fork legs (on a one-to-one basis) to receive a motorcycle handlebar. The invented organization also provides an equipment mounting region sized to receive selected equipment. The equipment mounting region is bounded laterally by the risers, and vertically by the handlebar and triple-tree structure.

Abstract: A steering damper particularly for mountain bicycles of the type having a steer-tube including a cylinder having closures at the ends filled with oil of high viscosity. Within the cylinder there are a dam and vanes. The steering damper is integrated with the steer-tube and with the handlebars and steer-stem. The vanes of the steering damper are connected to the frame and are fixed. The housing and dam connected internally to the housing are disposed in, and connected to, the steer-tube so that when the handlebars are rotated, the housing and dam are rotated relative to the vanes. When the handlebars are being displaced from center, pressure is applied to the oil between the dam and a vane and the movement is damped. On the return stroke of the handlebars, the one-way valve in the vane involved is open, the oil between the dam and the vane is discharged, pressure is reduced and the damping is suppressed.

Abstract: There is disclosed herein a suspension fork assembly particularly for use with bicycles. The assembly comprises an outer tube which is mounted via brackets to the steering tube of the bicycle frame, and an inner tube that telescopes within the outer tube. A shock absorbing system, preferably in the form of a cartridge is provided within the tubes. The inner surface of the outer tube and the outer surface of the inner tube each have a plurality of axially arranged opposing longitudinal flat sections, such as four on each tube. A plurality of needle bearings are disposed between the tubes on these flat sections. This arrangement, with the needle bearings arranged on the flat sections between the inner and outer tubes, allows the two tubes to freely telescope in and out with respect to one another without any significant static friction, and also serves to maintain torsional rigidity between the outer tube to the inner tube.

Abstract: A heat dissipating arrangement for a damping system, such as the damping system of a bicycle suspension fork. The heat dissipating arrangement includes a heat sink, which, in a preferred embodiment, has a substantially cylindrical body and radially extending heat sink fins. The heat sink is either positioned over or around a damping cartridge or other damping system containing damping fluid or is formed as the damping cartridge itself. Preferably, the heat sink is positioned within the inner fork tube of a suspension fork with the heat sink fins in close proximity, and preferably contacting, the inner wall of the inner fork tube. Thus, the heat sink fins dissipate heat from the damping system to the inner fork tube. The pumping action of the suspension fork, as well as air passing over the fork as the bicycle is moving, dissipate heat from the fins, and thus from the heat dissipating arrangement and the damping system.

Abstract: A headset assembly includes a race having a flange which rests on an end of the head tube and an annular recess defined in the inner periphery thereof so as to receive a bearing therein. The bearing has a first tapered surface defined in the top of the inner periphery thereof so as to engage with the second tapered surface of the cap which is mounted to the flange and the bearing. The cap has a third tapered surface defined in the top thereof so as to engage with a fourth tapered surface of a compressing ring which is pressed by the handlebar stem which is securely mounted to the steering tube extending through the bearing, the cap and the compressing ring.

Abstract: To enable the positioning of an axle nut with a clamp. A split clamp axle holder is provided on each of the lower portions of left and right front forks of a motorcycle. The ends of an axle of the motorcycle are respectively fastened to the axle holders. The axle holder which supports a threaded small diameter portion of the axle has a peripheral groove extending in a radial direction from an axle opening. An axle nut is locked inside the axle opening by tightening clamp parts positioned on both ends of a slot formed in the axle holder with a bolt. One end of the axle nut includes a collar part and the other end includes a peripheral groove. A central part of the axle nut includes a cylindrical part which is inserted into the axle opening with the side having the peripheral groove entering first. By engaging a circlip in the peripheral groove protruding from the other end of the axle nut, it is possible to properly locate the axle nut on the axle holder.

Abstract: A suspension system, particularly for a pedal-driven vehicle, comprising a telescoping strut having first and second telescopingly and coaxially engaged members, and having a damping system comprising a damping fluid, a damping piston connected to a piston rod, an inertia-activated compression fluid flow control mechanism and a pressure-activated compression fluid flow control mechanism disposed in the first telescoping strut. The inertia-activated compression fluid flow control mechanism comprises a valve body biased by a valve spring into a first position over a radial groove formed on the piston so that the valve body prevents fluid flow through an inertia-activated compression fluid flow circuit in response to force inputs imparted to the vehicle frame.

Abstract: A light-weight bicycle crown includes a horizontal unitary body member having in longitudinal vertical cross-section an arched generally inverted U-shaped configuration including a center portion, a pair of generally downwardly extending leg portions, and a pair of end portions integral with the lower ends of the leg portions, respectively, the center portion containing a vertical center through bore for receiving the bicycle steering shaft, and the end portions containing vertical end through bores on opposite sides of the center bore for receiving the stanchions of the front fork shock absorber means, respectively, characterized by the provision of lightening bores that extend from the end bores longitudinally within the leg portions, respectively, the end bores terminating in closed end walls adjacent the center through bore.

Abstract: Assembly includes a bicycle hub assembly, a control shaft having opposed ends passing through the hub assembly, bicycle frame members operative to receive and retain the opposed ends of the control shaft, wherein one of the frame members includes an open slot to receive and retain one end of the control shaft and the other of the frame members includes openings for a releasable, fixed connection with the opposed end of the shaft; and a handle for manual rotation of the shaft to engage and disengage the shaft with the frame members.

Abstract: A bicycle handlebar stem for attaching a handlebar to the steering tube on a bicycle includes a continuous wall section which extends continuously and completely around the steering tube from one side to the other of a tubular central portion of the stem without any gaps or spaces therebetween. A slot in the center of the tubular central portion of the stem provides a means for reducing the diameter of the central opening formed by the continuous wall section for attaching and tightening the stem onto the end of the steering fork. An arcuate-shaped cover member on the opposite end of the stem, the cover member and stem and having cooperating semi-cylindrical clamping surfaces, provides a means for attaching and tightening the handlebar onto the stem. The cover member is attached to the stem by virtue of a mechanical hinge and a single fastener.

Abstract: An integrate forming method for a front aluminum alloy fork of a bicycle, wherein, an aluminum alloy found round pipe having two elliptical pipe holes therein is selected as a blank and is formed an embryonic form of a pipe casting of the pipe head of the front fork by a milling process, then die cores are placed in the pipe casting then by using a sequential novel process including diameter reducing and tapering of the pipe head, a first stage forming, tapering of the branch pipes, a second stage forming, and bending forging etc., the front aluminum alloy fork can be integrately formed, in this way, the pipe head and the two branch pipes having extremely large variation of shape can be integrately formed, and the disadvantage of stress concentration in the conventional connecting and fixing technique can be gotten rid of, and good appearance as well as strength of the front fork can be improved by such a process.

Abstract: An assembly of two sets of universal mounts for interlocking with stock handlebar clamps to secure a larger diameter handlebar to a motorcycle or comparable vehicles. The two sets of universal mounts are used for mounting larger diameter handlebars to motorcycles or comparable vehicles. The two sets of the universal mounts are interlocked with the stock handlebar clamps. Each set of the universal mount has an upper mount and a lower mount. Each mount has a semi-cylindrical groove, where the larger diameter handlebar is fitted between the semi-cylindrical grooves of the upper and lower mounts respectively. Each lower mount has a protruding arch which is respectively positioned within the respective stock handlebar clamp, and thereby interlocks with the respective stock handlebar clamp.

Abstract: A suspension for at least a two-wheeled vehicle and at least two-wheeled vehicle with such a suspension. The suspension includes two shock absorbing systems independently operable between the vehicle's frame and wheel.

Abstract: A frame structure for a snowmobile includes a frame front end member, right and left main frames, and a connecting mechanism. The frame front end member includes a pair of right and left head members, each being formed into a hollow columnar shape, disposed substantially in the vertical direction, and a cross-member connecting the head members to each other. The right and left head members are connected to front end portions of the right and left main frames. The connecting mechanism is tightly secured to the cross-member. An upper end portion of a suspending member for operably suspending a steering member is disposed at a front portion of a snowmobile.

Abstract: An anti-tangle mechanism for a bicycle includes a first part disposed to an upper end of a head tube wherein the first part has an inner flange, a second part rotatably mounted to the first part and a third part mounted to the second part. The second part has a first block disposed to a periphery thereof and the third part has a second block disposed to a periphery thereof so that a first cable connected between the first block and a brake lever, and a second cable connected between the second block and a front brake device. The second part has three second holes defined therein and the third part has three inclined slots defined therein so as to have a bolt extending through each pair of the second hole and the inclined slot. A fourth part is received in the first part and has a flange extending from a top thereof so as to mount on the third part. A rear brake cable extends through the flange and the inner flange of the first part and is connected a rear brake device.

Abstract: A bicycle head tube packing arrangement includes a head tube, a hexagon head sleeve fixed to the inside of the head tube, a tubular shaft inserted through the hexagon head sleeve with both ends respectively fastened to a handlebar stem and a front fork, a nut threaded onto an outer thread on the tubular shaft to hold a first axle bearing around the tubular shaft below a lower collar on the tubular shaft, a screw cap threaded onto an inner thread at the top of the head tube to hold a second axle bearing around the tubular shaft above an upper collar on the tubular shaft.

Abstract: An improved adjustable motorcycle triple tree having a top tree subassembly, a bottom tree subassembly, and a solid tree stem interconnecting the top tree subassembly with the bottom tree subassembly. The tree stem is positioned within the hollow bore of a motorcycle frame steering head. The top tree subassembly has a pivot ball which provides two major rake settings. An adjustable rake lock block in the bottom tree subassembly provides means for precise rake settings within the two pivot ball major rake settings.

Abstract: The present invention relates to an improved headset for bicycle in which the head tube and the front fork tube are provided with a retaining ring and an inner and outer tapered bearing socket and tapered bearing respectively. The inner and outer tapered bearing socket and tapered bearing are firstly assembled to make the assembling work more easy and quickly. The headset assembly features a simplified and durable configuration which can be readily and quickly assembled.

Abstract: A bicycle front fork having two upper fork tubes, two lower fork tubes, and two fitting members connecting the upper fork tubes and the lower fork tubes. The upper fork tubes are provided respectively in the midsection thereof with a projection. The fitting members are provided respectively in the inner wall thereof with a slide slot in which the projection of the upper fork tube is slidably engaged to provide the upper fork tube with a shock-absorbing effect. The fitting members are provided respectively in the outer wall thereof with a protruded block. The lower fork tubes are provided respectively with a stopping ring edge having a groove corresponding in location to the protruded block of the fitting members. The fitting members and the lower fork tubes are fastened by a C-shaped ring.

Abstract: A motorcycle including a frame having a head tube, a fork having a stem positioned within the head tube, and a bearing assembly operatively positioned between the stem and the head tube. The bearing assembly includes a double-row, radial-thrust bearing on one end of the head tube, and a non-thrust radial bearing on the other end of the head tube.

Abstract: The description relates to a braking dive compensator for single-track vehicles. The front wheel (7) with its axle (13) and a brake anchor plate (1) are arranged on a trailing link (4). The link (4) is supported via a sprung component (8) on one fork (3) and, on braking, a force counteracting the braking dive force is taken from the brake anchor plate (1) and the fork (3). Between the brake anchor plate (1) and the fork (3) is articulated a pushrod (2) which assumes an acute angle (.alpha.) with the longitudinal axis of the link (4) under tension.

Abstract: There is disclosed herein a suspension fork assembly particularly for use with bicycles. The assembly comprises an outer tube which can be mounted in and extend through the head tube of the bicycle frame, and an inner tube that telescopes within the outer tube. A shock absorbing system, preferably in the form of a cartridge is provided within the tubes. The inner surface of the outer tube and the outer surface of the inner tube each have a plurality of axially arranged opposing longitudinal flat sections, such as four on each tube. A plurality of needle bearings are disposed between the tubes on these flat sections. This arrangement, with the needle bearings arranged on the flat sections between the inner and outer tubes, allows the two tubes to freely telescope in and out with respect to one another without any significant static friction, and also serves to maintain torsional rigidity between the outer tube to the inner tube.

Abstract: A headset assembly includes a race mounted to a head tube and has a first groove defined in the inner periphery thereof, an annular flange extending inwardly and radially from the inner periphery of the race, a cap member mounted to the race and has a second groove defined in the outer periphery thereof, and an annular track connected to a periphery defining the second groove and having a third groove in the outer periphery thereof so as to hold a plurality of ball bearings between the first groove and the third groove. The annular flange is located above the annular track so as to retain the annular track in position. Accordingly, the outer periphery of the cap member does not need to be heat treated.

Abstract: A new and improved two wheeled vehicle suspension fork with reinforced legs. The reinforcement is provided to the upper inner tube of a telescoping assembly utilized in the suspension fork. The inner tube has an upper end portion for attachment to the crown. The upper end portion has an enlarged outer dimension for reinforcing the upper inner tube at the crown attachment.

Abstract: A bearing assembly for a bicycle comprises a bearing with a first race rigidly connected to the head tube and a second race provided with a neck portion which can be elastically clamped around the steering tube of the bicycle fork.

Abstract: A handlebar clamping device includes a clamping body, a conventional C-clamp for clamping the body to a vertical steerer tube on the steering fork of the bicycle, and a recessed clamping surface for clamping the body to the handlebar. The recessed area of the body of the clamp includes a first semi-cylindrical clamping surface situated between a pair of tapered inner walls. The device further includes a cover member which has two outwardly projecting prongs which define a second semi-circular clamping surface, and further define a pair of tapered outward walls. The outward protruding prongs on the cover member are inserted into the recessed area of the clamping body so that the first and second tapered outer walls are in opposing surface to surface contact with the first and second tapered inner walls on the clamping body, respectively.

Abstract: A motorcycle including a fork assembly, a wheel including a wheel axle connected to the fork assembly, a bushing rotatably mounted on the wheel axle (e.g., by a spherical bearing), and an axle cover mounted on the bushing. The axle cover includes a base portion having a periphery, and a skirt portion extending away from at least a part of the periphery of the base portion. The skirt portion preferably defines at least one gap adapted to receive a fender strap to thereby allow the fender strap to be recessed into the axle cover. The axle cover can also include an opening through which the bushing is positioned. In addition, a hub cap can be connected to the bushing such that the axle cover is compressed between the hub cap and the bushing.

Abstract: A bicycle handlebar stem assembly, including a laterally displaceable fork tube, a handlebar stem with a hollow portion which fits around the fork tube, and an expanding device capable of displacing the fork tube perpendicularly to its axis tightly against the handlebar stem hollow portion; thus securely fixing the handlebar stem to the fork tube.

Abstract: A structure of a front fork 10 for a bicycle, which has a buffering mechanism relatively easy to mount and relatively simple in construction, comprising a pair of expandable fork blade portions 13 for the bicycle, including a pair of supporting pipes 21 extending downwardly from a crown portion 11, and a pair of sliding pipes 22 sidably fitted over the supporting pipes 21, wherein cylindrical spring structure 18 for elastically supporting each sliding pipe 22 is provided between the top end 22a of the sliding pipe 22 and the bottom end of the crown portion 11, and the cylindrical spring structure 18 is so arranged as to surround the supporting pipe 21, and wherein a stopper 30 for regulating a stroke of vertical movement of a connection member 17 is provided between the crown portion 11 and the connection member 17 connecting the pair of sliding pipes 22 in a body.

Abstract: A springer fork assembly is provided for use on a motorcycle having handlebars. The springer fork assembly includes a springer fork and a gauge mount. The springer fork includes a non-moving portion that does not move relative to the handlebars and a moving portion that moves relative to the handlebars. The gauge mount is coupled to the moving portion of the springer fork for movement relative to the handlebars.

Abstract: A handlebar stem assembly includes a handlebar stem, a tubular housing formed on one end portion of the handlebar stem, a passage transversely defined in an inner wall of the tubular housing, and an adjusting member rotatably mounted in the passage such that a handlebar of a bicycle can be eccentrically mounted in the adjusting member.

Abstract: A steering damper particularly for mountain bicycles of the type having a steer-tube including a cylinder having closures at the ends filled with oil of high viscosity. Within the cylinder there are a dam and vanes. The dam is rotatable on a shaft from a center position towards and away from the vanes. The shaft is connected to the handlebars and is rotatable with the handlebars which are connected to control the steering movement of a steerable wheel through the steer-tube. The steering damper is integrated with the steer-tube and with the handlebars and steer-stem. The vanes of the steering damper are connected to the frame and are fixed. The housing and dam connected internally to the housing are disposed in, and connected to, the steer-tube so that when the handlebars are rotated, the housing and dam are rotated relative to the vanes. When the handlebars are being displaced from center, pressure is applied to the oil between the dam and a vane and the movement is damped.

Abstract: A new and improved two wheeled vehicle suspension fork with reinforced legs. The reinforcement is provided to the upper inner tube of a telescoping assembly utilized in the suspension fork. The inner tube has an upper end portion for attachment to the crown. The upper end portion has an enlarged outer dimension for reinforcing the upper inner tube at the crown attachment.

Abstract: A modular steering headset for use on a bicycle having a frame with a head tube secured thereto and a fork with a tubular upper extent, the steering headset including a pair of annular cups with each cup secured to an end of the head tube; an upper and lower pair of rigid annular raceways secured within the cups around the upper extent of the front fork to create an upper annular channel and a lower annular channel; a pair of bearing cages disposed around the upper extent of the fork and within the channels; and an adjusting nut threadably coupled to the upper end of the front fork and tightened to secure the bearing cages between adjacently located raceways, thereby rotatably coupling the fork to the head tube.

Abstract: Apparatus for mounting a cycle wheel on a cycle frame includes a cycle wheel hub assembly including a wheel support axle and a hub member rotatably mounted on the wheel support axle. The axle includes movable axle end segments which are movable between a retracted position and an extended position. In their extended positions the axle ends are secured to wheel supports connected to the cycle legs.

Abstract: A head set disposed at each one of two ends of a head tube of a bicycle includes a bowl member having a neck portion inserted into the head tube and a skirt portion with a first groove defined therein, a ring member force-fitted into said neck portion, a plurality of balls received in the first groove, an annular member having a second groove defined therein so that the balls are rotatably received between the first groove and the second groove, and a race member engaging with and positioning the annular member. The ring member has a first flange and the race member has a second flange which is overlappingly disposed with the first flange in a longitudinal direction of the head set.

Abstract: A 26-inch springer fork is bent to produce a forward curve in the furcations or arms of the fork. The curve has a bending radius of substantially six inches, and the angle between the arms and the main body of the fork is less than a right angle. Typically, the angle of bend is on the order of substantially seventy-five degrees. When mounted on a bicycle, the curved fork causes the front wheel to extend forward in front of the bicycle, and gives the bicycle a longer, lower look, thereby emulating what is known as a "low rider." The struts of the springer fork are shortened to accommodate the bend. The springer fork has a steer tube provided with a threaded member at the bottom thereof for mounting a fender. An angulated washer is provided for matching a mounting screw to the inner curved surface of the fender.

Abstract: A bicycle front fork packing structure including a tapered ball bearing mounted around the top coupling tube of the front fork and connected between the vertical tube of the handlebar stem and the head tube and having a tapered center through hole, a tapered screw cap threaded onto the externally threaded bottom end of the vertical tube of the handlebar stem and covering the tapered ball bearing and having an inside annular groove, a split packing ring mounted within the tapered screw cap and the ball bearing and forced into engagement between the head tube and the top coupling tube of the front fork and having an outside annular flange forced into engagement with the inside annular groove of the tapered screw cap.

Abstract: A light weight, stowable golf cart powered by a pedaled drive train. An enclosed box frame supports three extra wide, non-pneumatic tires which are pedal powered through a push button controlled, multi-speed transmission and separate endless chain and belt drive linkages. A rear differential transfers drive power to split rear axles and the rear wheels to enhance maneuverability. Fabric fenders mount over the rear wheels. A fabric semi-recumbant seat and bag support adjust fore and aft along a railed track. A tiller handle mounts to a head tube containing pre-mounted bearings. Cable controlled front caliper brakes mount to a front fork and wheel. Foot controlled brakes operate through the multi-speed transmission. The cart disassembles for shipping, storage and transport.

Abstract: A steering control safety mechanism is provided for a bicycle having a cylindrical head tube, a hollow steerer tube rotatably positioned in the head tube, a fork, and a stem releasably attachable to an upper end of the steerer tube for rigidly fixing a handlebar to the steerer tube. The safety mechanism includes a cylindrical torque transfer member positioned in the steerer tube, a wedge member positioned in the steerer tube below the torque transfer member, and a bolt rotationally positioned in the passageway of torque transfer member, supported on the torque transfer member, and aligned to laterally offset the wedge member from the torque transfer member and cause the torque transfer member and the wedge member to form a jam fit. A first steering control path is defined in the steering mechanism by connections between the handlebar, stem, steerer tube and fork.

Abstract: A mounting device is used to mount a handlebar on a head tube of a bicycle and includes a positioning member which is adapted to be mounted on the head tube and a holding member which includes complementary first and second holding arms. Each holding arm has a pivot end portion, a gripping end portion and an abutment face which extends between the pivot and gripping end portions. The pivot end portion of each of the holding arms is mounted pivotally on the positioning member. The gripping end portion of each of the holding arms is formed with a grip section with an axis that is parallel to an axis of the pivot hole. The grip sections of the holding arms are adapted to grip fittingly the handlebar therebetween. The abutment faces of the holding arms are complementary and are formed as twisted faces that abut against each other. A first fastener extends through the pivot end portion of each of the holding arms and the positioning member to mount the holding member onto the positioning member.

Abstract: A headset assembly includes a race mounted on a ball bearing rotatably mounted in an upper bowl. A compression member has two semi-annular urging elements each mounted between a steerer tube and the race and each having an outer tapered surface engaged on an inner tapered surface of the race. A cap is mounted around the steerer tube and supported on the upper bowl. A biasing member is mounted between the two semi-annular urging elements and the cap. A sleeve is fixedly mounted around the steerer tube and urged on the cap.

Abstract: A device for adjusting positions of a bicycle's handlebar is engaged to a steerer tube and includes a base element and a pivotal element which receives the handlebar therein, the base element is securely engaged to the steerer tube, the pivotal element has a second hole defined transversely therein for receiving a rod therein and two slots defined in a toothed under surface of the pivotal element, which communicate with the second hole, the base element has two fourth holes defined therein and a toothed surface defined in an upper surface thereof for the toothed surface of the pivotal element to engage with the threaded surface of the base element and two bolts extend through the fourth holes, the two slots and to threadedly engage with threaded holes defined in the rod received in the second hole such that the handlebar and the pivotal element can be pivoted corresponding to an axis of the rod.

Abstract: A bicycle upright tube fastening assembly comprises a handlebar upright tube, a bolt, a tightening head,. an arresting tube, a torsion spring, a nut, a head tube, a from fork tube column, and a bearing set which is composed of a mounting seat, a ball bowl, a rolling ball slot seat and a ball nest. The mounting seat is provided therein with an upper tapered portion and a lower tapered portion. An upper fitting ring is received in the upper tapered portion while a lower fitting ring is received in the lower tapered portion. The ball bowl is provided with a straight center hole having at one end thereof a tapered protuberance which is engaged with the lower tapered portion of the mounting seat such that one end of the tapered protuberance urges the lower fitting ring of the mounting seat. The rolling ball slot seat is urged by the head tube when a pressure exerting on the mounting seat is transmitted to the ball bowl and the ball nest which is located between the ball bowl and the rolling ball slot seat.

Abstract: A disc brake, preferably for motorcycle front wheels, including a peripheral annular disc and arranged such that its caliper reaction passes through a fixed axle coaxial with the wheel axis. The caliper is mounted at the end of a radial arm rigidly connected to the axle and the axle is torsionally keyed into at least one antirotation seat at a respective cooperating portion of the wheel support.

Abstract: A front fork brace which clamps to the sliding tubular portion of each front fork leg of a motorcycle. The brace captures a resilient member between each sliding tubular fork leg and respective clamping structures of the brace. A cross member rigidly connects the pair of clamping structures between upper ends of the lower sliding tube of each front fork leg. In one embodiment, each clamping structure has upper and lower flanges which capture an enlarged upper portion of the respective sliding tube therebetween to restrain relative movement between the clamping structures and the sliding tube. In another embodiment, the clamping structures clamp onto respective resilient sleeves.

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.