Abstract: A theft-proof bicycle comprising a frame structure consisting of three frame parts (1, 2, 3), which are connected so as to form a triangle, where the rod for the front wheel's supporting fork (4) is attached to the triangle's front corner (6), while the rear wheel's supporting fork structures are attached to the frame structure in the areas of the two other corners (7, 8) of the triangle. One of the frame parts (1) forming the triangle's front corner is designed with a holding sleeve for the rod for the front wheel's supporting fork (4). The sleeve is equipped with an extension and an aperture for passing through a locking pin. The second frame part in the area of this corner (6) is designed as a fork, one prong of which is passed on each side of the front wheel fork's rod. The supporting frame (1, 2, 3) is equipped in a corner (7) with a pivot joint in order to permit a relative movement of the supporting parts in the supporting fram's plane, between an operating or cycling position and a locked position.

Abstract: A foldable bicycle includes a front fork, a head tube, a support tube, an adjusting member, two support levers, a rear fork, and a hydraulic cylinder. Thus, when the foldable bicycle is folded, the rear wheel is in parallel with the front wheel, so that the user can simultaneously draw the rear wheel and the front wheel to move easily and conveniently, thereby facilitating the user moving the folded bicycle. In addition, the foldable bicycle is folded easily and conveniently, thereby facilitating the user folding the bicycle.

Abstract: An adjustable steering column comprises a steering column shaft, a handlebar, and an adjustable clamp assembly securing the handlebar to the steering column shaft. The adjustable clamp assembly comprises a handlebar clamp to secure the handlebar to the adjustable clamp assembly. An extension is secured to the handlebar clamp and extends away from the handlebar clamp. The extension has first and second opposing sides. A first clamp surface is attached to the steering column. The first clamp surface is disposed on the first side of the extension. A second clamp surface is disposed on a second side of the vertical extension. The second clamp surface is moveable with respect to the first clamp surface from a first position where the extension is immovable to a second position where the extension is moveable.

Abstract: A motorcycle or bicycle having a fork with swappable trail adjustment blocks which hold the front axle to the fork. Trail can be adjusted without removing the forks or even loosening them in the triple clamps, and without altering ride height or rake angle. Brake caliper mounts are swapped when the trail adjustment blocks are swapped, moving the brake calipers the same distance and direction as the axle, to maintain a constant radial distance from the axle to the brake pads. The brake caliper mounts pivot on the forks, enabling the brake calipers to be swung outward so the wheel can be changed without removing the brake calipers from the forks.

Abstract: An inverted type front fork in a two-wheeled vehicle or the like, wherein an annular groove in which both end portions in an axial direction are closed is formed in an upper inner periphery of an outer tube, and an annular bush having a closed gap in a free state is attached to the annular groove, and an annular gap between an inner periphery of the outer tube and an outer periphery of the inner tube forms a smaller thickness than the bush.

Abstract: A front fork unit of a bicycle includes a fork body, an outer tube movable relative to the fork body, a shock absorber interposed between and secured to the fork body and the outer tube, an inner tube disposed in the outer tube and secured to the fork body, and a resistance-providing member secured to one of the inner and outer tubes and in sliding and frictional contact with the other of the inner and outer tubes so as to provide a resistance to movement of the outer tube relative to the fork body.

Abstract: A headset spacer unit and a steering assembly equipped therewith in which the headset spacer unit is formed of a plurality of annular spacers, each of which has a configuration at top and bottom sides thereof which is shaped to enable a bottom side of each of the plurality of spacer to make an interlocking engagement with a top side of another of said plurality of annular spacers in a manner preventing relative radial movement between the spacers. In the steering assembly, advantageously, a highest component of the headset and a bottom surface of the handle bar stem have a complementary configuration for engaging with the configuration of a respective side of the spacer unit.

Abstract: An improved telescopic front suspension system is disclosed for use with vehicles having a front wheel, such as bicycles and motorcycles. The assembly includes a steering tube mounted in a head tube of the vehicle frame and connected to a stem and handlebar above the head tube and to a fork crown below the head tube. The crown is attached to a pair of stanchions which slide axially inside of a pair of sliders mounted to each side of the axle for the front wheel. The stanchions and sliders have a cross-sectional shape that is a non-round, smooth curve, such as an ellipse. The upper end of the sliders provides a mounting for an external bushing whose inner shape matches the outer shape of the stanchions. The lower end of the stanchions provides a mounting for an internal bushing whose outer shape matches the inner shape of the sliders.

Abstract: A bicycle headset assembly is mounted to a steering tube extending through a head tube of the bicycle. The headset assembly includes a race connected to a top end of the bicycle head tube and a bearing set is engaged with an inner periphery of the race. A positioning ring is engaged with an inner periphery of the bearing set and mounted on the steering tube. A cap is mounted to the race and presses the positioning ring. A pressing ring is mount to the steering tube and presses on a top surface of the cap by the handlebar stem.

Abstract: A handlebar assembly including a pair of handgrip portions extending outwardly from a mounting portion and configured for generally vertical, arcuate movement relative to the mounting portion. One or more shock absorbing arrangements may be provided to produce a force tending to resist downward movement of the handgrip portions. Desirably, the handgrip portions are adjustable in height relative to the mounting portion.

Abstract: A motorcycle including a frame and a triple clamp supported by the frame for rotation relative to the frame. The motorcycle includes an engaging member, a triple clamp fastener, and a cover. The engaging member includes a first engagement portion and is positioned between the triple clamp fastener and the surface of the triple clamp. The cover includes a second engagement portion that engages the first engagement portion to cover at least a portion of the triple clamp fastener.

Abstract: A front fork yoke for a motorcycle where the yoke includes a parallel pair of posts rigidly maintained laterally spaced apart by a pair of parallel semi-circular arches extending laterally between the posts. The imposts of the upper arch are curved rounded-over shoulders. The front face of the yoke is smoothly rounded-over towards the rear face of the yoke. The arches are upwardly convex and support the motorcycle head tube therebetween. The lower arch is butt-jointed to the fork uprights without the use of collars external to the uprights.

Abstract: A bicycle includes fork head (2) from which two sleeves (3a,3b) branch off and, on the side opposite to the sleeves, a tubular pivot (4) including a lower cylindrical portion (4a) integral with the fork head, and an upper cylindrical portion (4b) for fixing a stem. The external diameter (Da) of the lower cylindrical portion (4a) of the pivot is larger than the external diameter (Db) of the upper cylindrical portion (4b) of the pivot, and a transitional zone (4c) links the two parts (4a,4b) with different diameters.

Abstract: Vehicle steering head including a connecting element adapted to engage a handlebar. A support tube rotatably supports the connecting element. A fork member adapted to connect a wheel fork to a handlebar. The fork member is rotatable with respect to the support tube. A mechanism limits the rotational movement of the fork member in each of two directions. A lower bearing support is mounted to the support tube. The mechanism and the lower bearing support cooperate to limit the rotational movement of the fork member.

Abstract: An internally supported cable system control for a bicycle that does not interfere with the steering mechanism and does not require the structural integrity of the bicycle frame to be compromised. In the disclosed internal cable system, the control cables are routed through a passageway in the gooseneck and the bicycle frame to the mechanism or device that they are designed to control. The gooseneck design is unique in that it allows for an unobstructed passageway for the cables to travel into the steering tube and frame, while allowing for both sliding forward and rearward as well as raising and lowering, as desired by the bicycle rider. For aesthetic reasons, a casing may be added to cover the cabling between the control levers and the gooseneck.

Abstract: A hydraulic steering damper (9) is designed to be fitted inside a steering sleeve (3) between the steering sleeve (3) itself and a steering pin (2) that is coaxial with the sleeve (3) and having an axis of rotation (A). The damper (9) includes a cylindrical lining (11), that can be fixed to the steering sleeve (3), and a cylindrical wall (13), that can be fixed to the steering pin (2). The lining (11) and the wall (13) form between them a gap (16) designed to hold a hydraulic fluid (17) and divided into a first and a second chamber (28, 29), which are in fluid communication with each other through a conduit (30). The damper (9) further includes a blade (25) attached to the cylindrical wall (13) and designed to push the fluid (17) from one to the other of the chambers (28, 29) when the steering pin (2) is rotated relative to the steering sleeve (3).

Abstract: With the invention is presented an anti-theft device for bicycles, which comprise a bicycle frame (2) and a steering column (14) mounted on the bicycle frame (2) for steering the bicycle, which steering column is provided for a rotationally fixed coupling of bicycle handlebars (6) with a fork (5) for a front wheel (4), having a separating means for nuetralising the rotationally fixed coupling, wherein a coupling piece (8) or a connecting element (60) is provided as separating means, which divides the steering column (14) into two parts (34) and produces the rotationally fixed coupling of these steering column parts (34) in a first state and neutralises it in a second state.

Abstract: A vehicle including a body frame (20) commonly used on a two-wheeled automotive vehicle (10), a three-wheeled automotive vehicle (140), and a four-wheeled automotive vehicle (200). A head pipe (23) is formed on a front frame (22) of the body frame. The head pipe has an adjustment mechanism (60) for adjusting a position and an angle of a center line (A1) of a steering shaft (42) relative to a center line (C1) of the head pipe. A rear frame (24) of the body frame has rear walls formed with pluralities of rear mount portions (27) to allow rear units (91, 171, 265) of different kinds for the two-, three- and four-wheeled automotive vehicles to be selectively mounted.

Abstract: A bicycle includes a stem extending downwardly from a handle, and a crank mechanism interconnecting the stem and a head tube. The crank mechanism includes a frame fixed on the head tube, a lever pivoted to a front end of the frame and extending uprightly therefrom, a crank pivoted to the rear end of the frame and extending uprightly therefrom, and a coupler member pivoted to an upper end of the crank and movably connected to an upper end of the lever so as to permit co-movement of the lever, the crank and the coupler member relative to the frame and so as to permit frontward and rearward movement of the handle together with the stem relative to the head tube. A locking unit is selectively and movably connected to two of the frame, the lever, the crank and the coupler member, and is operable between locking and unlocking positions.

Abstract: The production of sharp shocks is prevented by increasing resilient gas characteristics in response to the compression stroke acting on a front fork. The front fork comprises a tube 1 connected to the vehicle body and a tube 2 connected to the vehicle wheels and engaging to slide freely with respect to the tube 1. A damper 3 and a suspension spring 7 which is biased in a direction in which the tubes 1, 2 are extended are provided in an interior space between the vehicle-body tube 1 and the vehicle-wheels tube 2. A first gas chamber 4 and an oil chamber 5 into which oil is introduced from the damper 3 are formed in the interior space. A second gas chamber 9 is provided which is connected to the first gas chamber 4 through a orifice 10. A space A which is provided between the outer periphery of the suspension spring 7 and the inner periphery of the vehicle-body tube 1 and is closed by entry of the tip 2a of the vehicle-wheel tube 2.

Abstract: The steering set comprises an upper roller bearing (2) and a lower roller bearing (18) adapted to guide in rotation a pivot tube. Each roller bearing is (2, 18) received in a respective annular recess (14, 19) provided within a steering post (11) forming a part of a bicycle frame (12). Each roller bearing (2, 18) is associated with a respective ring (3, 24) itself resting on a support surface, and an end ring (6) surrounded the pivot tube (10) above the steering socket (11). The roller bearings (2, 18) are associated with adapters (26, 27) in the form of rings disposed between the roller bearings (2, 18) and the bottom of the annular recess (14, 19) so as to adjust the height of the recess so as to adapt it to roller bearings (2, 18) having different heights.

Abstract: Vehicle steering head including a connecting element adapted to engage a handlebar. A support tube rotatably supports the connecting element. A connecting member is adapted to connect a wheel fork to a handlebar. The connecting member is rotatable with respect to the support tube. A mechanism limits the rotational movement of the connecting member in each of two directions. A lower bearing support is mounted to the support tube. The mechanism and the lower bearing support cooperate to limit the rotational movement of the connecting member.

Abstract: A wheel support portion for a bicycle, such as a front fork assembly, arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle through the wheel support. Desirably, the front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. An intermediate portion of each of the fork legs defines a cavity. A damping member comprised of a vibration damping material is positioned within the cavity. Preferably, the cavity passes completely through each fork leg in a lateral direction and the damping member is retained within the cavity by a friction fit therebetween.

Abstract: A headset for use in the frame body of a bicycle or tricycle is constructed to include a ball bearing, an annular cap covered on the ball bearing, and an annular tightening member mounted in between the cap and the ball bearing. The tightening member has a top coupling flange forced into engagement with an inside mounting groove of the cap and a bottom hooked retaining portion hooked on a bottom edge of the ball bearing, keeping the ball bearing and the cap and the tightening member secured together for easy installation.

Abstract: A bicycle suspension system that includes an indicator for displaying the travel of a bicycle suspension system in response to an applied load. The system includes an inner tube telescopically engaging with the outer tube along an axis. A biasing mechanism biases the inner and outer tube apart from each other along the axis. The indicator is disposed along a length of the inner and outer tubes. The indicator may include a plurality of markings on the inner tube and a pointer on the outer tube. Each marking corresponds to a distance that the inner and outer tubes may be displaced relative to each other. The suspension system may include an adjustment mechanism that adjusts the distance the inner and outer tubes may be displaced relative to each other in response to an applied load. The rider may select the desired travel by actuating the adjustment mechanism to align the marking corresponding to the desired travel with the pointer.

Abstract: In a wheeled cycle, including a bicycle, having a headtube supporting a front handlebar stem and front wheel fork yoke, a tool-free stem-to-yoke mounting assembly and method is provided for mounting the front handlebar stem to the front wheel fork yoke in mating relation rotationally supported in the headtube, the tool-free stem-to-yoke mounting assembly mounting the stem to the yoke within the headtube with an insertion motion requiring no tools. Disassembly desirably requires a tool.

Abstract: A structure restraining movement of a handle of a children's cycle comprises a handle, a frame, a cover and a block. The handle has a bolt and a nut. The frame comprises a strut at the front end. Both the cover and block comprise a hole at their center portion thereof, whereas the cover is secured to the handle and the block is secured to the strut of the frame. By inserting the bolt through the holes of the cover and the block, the handle and the frame are pivoted and secured together with the nut from the other end. This secures the handle to the frame of the cycle and allows the handle to turn with respect to the frame. Whereas a stud protruding from the cover seats in an arc slot of the block, which restrains the stud to go any further when it has reached to the two ends of the arc slot, this also restrains the handle to turn to a certain position.

Abstract: In cycles, including tricycles, having a longitudinally extending frame supporting a front wheel and a subframe including a rear axle supporting a pair of laterally spaced rear wheels, and supporting a seat for a rider, and having a headtube comprising a tubular member extending axially along a steering axis, a front handlebar stem comprising a tubular member extending axially downwardly into the headtube, and a front wheel fork yoke comprising a tubular member extending axially upwardly into the headtube, simplified quick tool-free mounting assemblies are provided, including a tool-free frame-to-subframe mounting assembly mounting the frame to the subframe with an insertion motion requiring no tools, a tool-free seat-to-frame mounting assembly removably and adjustably mounting the seat to the frame with an insertion motion along the direction of travel of the cycle and requiring no tools, and a tool-free stem-to-yoke mounting assembly mounting the stem to the yoke with an insertion motion requiring no tools.

Abstract: A top head set securing device includes a C-shaped pressing member connected to a lower end of a ring portion of a handlebar stem which clamps on a steerer tube extending through a head tube. Two lugs extend from two ends of the C-shaped pressing member for a bolt extending through the two lugs to securely clamp on the steerer tube. The pressing member has a tapered inner periphery which is mounted onto a tapered outer periphery of a pressing ring which is mounted to the steerer tube and rests on a top head set on a head tube. The pressing ring exerts a downward force to the head set when tightening the pressing member.

Abstract: A handlebar assembly for bicycles includes a handlebar stem and a clamping member is connected to the handlebar stem. A handlebar extends through the clamping member and a relief sleeve is mounted to the handlebar and sandwiched between the handlebar and the clamping member. The relief sleeve has holes which release stress applied to the handlebar.

Abstract: A bicycle head tube and ball bearing mounting arrangement in which two gasket rings are respectively mounted in expanded top and bottom receiving portions of a head tube to support a respective ball bearing assembly in each end of the head tube, which ball bearing assembly supports a handlebar stem and front fork assembly in the head tube, the gasket rings each having a curved inner diameter fitted over the bottom edge of the respective ball bearing assembly to prevent direct contact of the bottom edge of the respective ball bearing assembly from direct contact with the respective expanded receiving portion of the head tube.

Abstract: A wheel support portion for a bicycle, such as a front fork assembly, arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle through the wheel support. Desirably, the front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. An intermediate portion of each of the fork legs defines a cavity. A damping member comprised of a vibration damping material is positioned within the cavity. Preferably, the cavity passes completely through each fork leg in a lateral direction and the damping member is retained within the cavity by a friction fit therebetween.

Abstract: A one-sided spring-loaded arm for the front wheel of a bicycle consists of two parts (1,2), of which one is springing, and further, one of them is adapted to attach the front wheel of a bicycle and the other is adapted to be attached to the handlebar system of the bicycle. Part (2), which is adapted to attach the front wheel, is joined with part (1) slidingly in the direction of the longitudinal axis of part (1), as well as pivotally around this axis with a position fixation, as well as tiltably, with the axis of tilt lying in a plane transverse to the longitudinal axis of part (1), which is adapted to be attached to the handlebar system of the bicycle. Part (1), which is adapted to be attached to the handlebar system of the bicycle, may be spring-loaded and it comprises a supporting part (1.1), on which there is an auxiliary member (2.2) arranged slidingly and pivotally and positionally fixably.

Abstract: A telescoping fork for the front wheel of a two wheel vehicle comprises a pair of outer tubes that each have a bottom end and a top end. An upper structural member and a lower structural member connect the outer tubes. Further, each outer tube tapers outwardly, both externally and internally, in a direction from the bottom end toward the lower structural member and from the top end toward the lower structural member. The structural members may attach to a top and bottom of a steering column.

Abstract: A wheel support portion for a bicycle, such as a front fork assembly, arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle through the wheel support. Desirably, the front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. An intermediate portion of each of the fork legs defines a cavity. A damping member comprised of a vibration damping material is positioned within the cavity. Preferably, the cavity passes completely through each fork leg in a lateral direction and the damping member is retained within the cavity by a friction fit therebetween.

Abstract: A net shape filament winding manufacturing process and resulting products are disclosed. The manufacture of bicycle frame and their components from filament wound components which have been cut from a section of filament wound stock is disclosed. Also disclosed is a bicycle frame and its manufacturing process and a composite bicycle fork and components thereof.

Abstract: A head set assembly for bicycles includes a bearing set with balls received between an upper race and a lower race which is connected to an end of a head tube of a bicycle. The upper race has an annular inclined surface and an annular vertical inside. A pressing ring has an inclined outer surface for being engaged with the annular inclined surface of the upper race, and a flange extending from the inclined outer surface. The flange of the pressing ring is matched with the annular vertical inside of the upper race. The flange is mounted to a steerer tube extending through the head tube. A dust cap is connected onto a top of the pressing ring and a skirt of the dust cap encloses the lower race of the bearing set.

Abstract: A strength-saving steering mechanism for bicycles includes a H-shaped tube with a vertical insert pipe deposed at the inner end of a bar pipe of the H-shape tube. The vertical insert pipe is inserted in one upper end of a steering shaft pipe, which connects to a front wheel. The H-shaped tube is further equipped with a hollow vertical pipe and connected pivotally to an inside tube through an upper and a lower bearing. A vertical handle rod is inserted internally in one upper end of the inside tube and a positioning block is connected to one lower end of the inside tube. The steering shaft pipe is driven by a horizontal handle rod via the vertical handle rod and the connecting rod. Ratios of turning angles of the horizontal handle rod and the vertical handle rod exist for saving the strength.

Abstract: A telescoping fork for the front wheel of a two wheel vehicle comprises a pair of outer tubes that each have a bottom end and a top end. An upper structural member and a lower structural member connect the outer tubes. Further, each outer tube tapers outwardly, both externally and internally, in a direction from the bottom end toward the lower structural member and from the top end toward the lower structural member. The structural members may attach to a top and bottom of a steering column.

Abstract: A headset for use in the frame body of a bicycle or tricycle is constructed to include a ball bearing, an annular cap covered on the ball bearing, and an annular packing member mounted in between the cap and the ball bearing. The packing member has a top coupling flange forced into engagement with an inside mounting groove of the cap and a bottom hooked retaining portion hooked on a bottom edge of the ball bearing, keeping the ball bearing and the cap and the packing member secured together for easy installation.

Abstract: A telescoping bicycle handlebar assembly is disclosed wherein a crossbar adapted to provide support for a rider's hands during a bicycle ride is attached to a downbar extending substantially perpendicularly therefrom. A hollow tube adjacent to the front wheel of the bicycle and displaced from the bicycle's centerline is adapted to receive various lengths of the downbar depending on the height at which the handlebars are to be placed. A securing device is attached to the hollow tube and adapted to selectively secure the downbar in place inside the tube.

Abstract: A handlebar stem structure includes a tube having two connection members and two extensions are movably connected to the two connection members. Each of the two extensions has two connection ports. An outer layer is coated to the tube and the connection members, wherein the connection ports extend from the outer layer and a first recess is defined in the outer layer. A retaining member is connected to the two connection ports and a second recess is defined in an inside of the retaining member. The first recess and the second recess are matched to form a passage for receiving a handlebar.

Abstract: A bicycle headset of the type having upper and lower bearing assemblies for facilitating relative rotation between a steerer tube of a bicycle front fork and a head tube of a bicycle frame, each of the bearing assemblies having a bearing cup with cup-shaped portion for holding an annular rotary bearing unit and an axially extending insertion portion for insertion into the head tube, is improved by a stress-relieving undercut being formed as a transition between the cup-shaped portion and the insertion portion. The undercut can extend around the outer periphery of the insertion portion, the underside of the cup-shaped portion or the junction of the flange and cup-shaped portions.

Abstract: A front fork yoke for a motorcycle where the yoke includes a parallel pair of posts rigidly maintained laterally spaced apart by a pair of parallel semi-circular arches extending laterally between the posts. The imposts of the upper arch are curved rounded-over shoulders. The front face of the yoke is smoothly rounded-over towards the rear face of the yoke. The arches are upwardly convex and support the motorcycle head tube therebetween. The lower arch is butt-jointed to the fork uprights without the use of collars external to the uprights.

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 top the remainder of the bicycle frame section.

Abstract: A bicycle fork/hub cover assembly overlies a portion of a front fork and the ends of the front hub to change the appearance of the front portion of the bicycle. The cover assembly basically comprises an outside cover portion, an inside cover portion and snap-on fastening elements that couple the outside cover portion and the inside cover portion to a bicycle frame. The outside cover portion includes a right hub cover section, a left hub cover section, a right outside fork tube cover section, and a left outside fork tube cover section. The inside cover portion includes a right inside fork tube cover section, and a left inside fork tube cover section. The fastening elements are coupled to the outside cover portion and the inside cover portion.

Abstract: A mounting assembly for adjustably securing an axle and a brake carrier to a front monofork of a motorcycle. The axle is received within an eccentric axle carrier and extends through a lower end of the brake carrier. An opposite end of the brake carrier includes an opening through which a carrier mounting device extends. The carrier mounting device is secured to the monofork and guides or aligns the brake carrier relative to the monofork. When the axle carrier is rotated to adjust the attitude of the motorcycle front end, the mounting device moves relative to the brake carrier while the brake carrier is maintained in a relatively fixed relationship to the wheel.

Abstract: A bicycle for includes fork head (2) from which two sleeves (3a,3b) branch off and, on the side opposite to the sleeves, a tubular pivot (4) comprising a lower cylindrical portion (4a) integral with the fork head, and an upper cylindrical portion (4b) for fixing a stem. The external diameter (Da) of the lower cylindrical portion (4a) of the pivot is larger than the external diameter (Db) of the upper cylindrical portion (4b) of the pivot, and a transitional zone (4c) links the two parts (4a,4b) with different diameters.

Abstract: A head set positioning device includes a positioning tube having a rack portion defined in an outer periphery thereof and the position tube movably extends through a crown portion of a front fork and is fixedly connected to a lower head set which is connected to a lower end of the head tube. An upper head set is fixedly connected to an upper end of the head tube and a handlebar stem is mounted to the positioning tube. An extension tube extends from the handlebar stem and a gear member is rotatably received in the extension tube and is engaged with the rack portion. The handlebar stem is pulled to press the upper head set by rotating the gear member.

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.