Abstract: A base of a shock-absorbing front fork for a bicycle includes two straight tubes and a bridge. The bridge has two ends connected integrally with an upper section of each of the straight tubes. The bridge has a chamber therein. Thus, the base of the shock-absorbing front fork has the advantages of high structural strength and long service life.

Abstract: A bicycle rear suspension system has a virtual pivot point that is close to a junction between a chain and a front driving sprocket when a piston rod travels relative to a cylinder body by ¼ to ? of a maximum displacement value, and that moves rearwardly when a rear wheel moves upwardly away from the ground. A line interconnecting an instant center of a rear triangular frame and a contacting point between a rear wheel and the ground forms an angle of about 45° with respect to a horizontal line.

Abstract: A wheelchair comprising: three or more ground-engaging wheels; and a user seat, the user seat forming a structural member or monocoque on which the ground-engaging wheels are supported; wherein at least one of the wheels is connected to the seat by a support member, the length of the support member being adjustable during use. Also provided is a wheelchair or other wheeled vehicle, wherein at least one ground-engaging wheel is connected to a pivotable hub, and the said wheel is adjustable. Also provided is a wheelchair, wherein a ground-engaging wheel on each side of the wheelchair is provided with a brake. Also provided is a wheelchair or other wheeled vehicle in which one or more ground-engaging wheels are provided with ratchet means. A coupling arrangement for releasably joining two structural members is also provided. Also provided is a wheelchair including a rear castor with a detent mechanism.

Abstract: An integrated shifting and suspension system for a bicycle coordinates suspension settings with gear selections. A mechanical cable linkage between a derailleur and an adjustable shock absorber couples the shifting and suspension settings of a bicycle. This coupling automatically adjusts the suspension to a firm setting when a rider selects a low gear and a soft setting when a rider selects a high gear. Movement of the derailleur corresponding to a gear selection moves the cable, thus actuating a firmness control mechanism on the shock absorber. Various interconnections, including those linking front or rear derailleurs to front or rear suspensions are possible with the integrated systems described herein.

Abstract: A motorcycle frame has an improved front and rear suspension system incorporating two horizontally placed air bag suspension mechanisms, the motorcycle frame comprising an upper support member having a front backbone tube attached to two rear backbone tubes, a lower support member having a descending front downtube attached to two lower frame rails, an upper support brace attached between the front backbone tube and the descending front downtube, a head tube steering member pivotally attached to the descending front downtube, two rear upright frame members attached between each rear backbone tube and each lower frame rail and a rear axle frame member pivotally attached between the two rear upright frame members to the two lower frame rails.

Abstract: A seat tube for a bicycle includes an upright tube, a head and an inner tube all of which are made of fiber reinforced material. The upright tube has an inserting portion at a top thereof. The head has an inside chamber and a sleeve portion at a bottom thereof. The sleeve portion of the head is sleeved onto the inserting portion of the upright tube such that the inside chamber of the head is communicated with an inside of the upright tube. An outer wall of the inserting portion of the upright tube is a taper face converging upward. The inner tube is disposed at a junction of the upright tube and the head and interconnected with the upright tube and the head. Thus, the seat tube has strong structure with light weight.

Abstract: A apparatus for a shock absorbing handlebar steering mechanism for vehicles.

Abstract: One aspect of the present invention is comprised of a flexible rear frame member for a bicycle or velocipede. Other embodiments of the invention also include one or more assemblies, such as a rear wheel assembly, a seat assembly, a crank assembly, and strut members, which are adapted to be attached to the flexible rear frame member. A second aspect is a flexible front frame member, which may be pivotally attached to the flexible rear frame member. Other embodiments of this second aspect of the invention may also include one or more assemblies, such as a front wheel assembly and front strut members, which are adapted to be attached to the flexible front frame member. In some embodiments of the invention, the flexible rear frame member and the flexible front frame member, along with their respective assemblies, may together comprise a bicycle or velocipede.

Abstract: The invention relates to a bicycle frame including a base frame and at least one device which is mounted on the base frame, provided in the form of a brace structure, and has an accommodating area for accommodating a wheel. The invention also relates to a bicycle fork and to a method for producing a bicycle frame.

Abstract: The present invention provides for a vehicle, such as a motorcycle, that is capable of sufficiently absorbing shock applied in the vehicle width direction due to uneven terrain, such as bumps and potholes, on the ground or road during turns. The vehicle, such as the motorcycle, includes a head pipe for supporting a front wheel, a main frame for supporting a rear wheel to which the head pipe is attached for rotation about a torsion axis of a shaft part extending longitudinally, and a torsion spring for absorbing shock as the head pipe rotates with respect to the main frame.

Abstract: A bicycle rear suspension system includes a front part including a top tube, a down tube, a head tube and a seat tube. A rear part includes two seat stays and two chain stays. The seat stays have first ends pivotally connected to the dropouts on the first ends of the chain stays and two second ends of the two seat stays are pivotally connected to a first end of a connection member at a first pivot point. Two second ends of the chain stays are pivotally connected to a bridge between the down tube and the seat tube. A second end of the connection member is pivotally connected to the top tube. A cylinder has a first end pivotally connected to the bridge and a second end of the cylinder is pivotally connected to a mediate portion of the connection member at second pivot point.

Abstract: In a motorcycle in which an engine body of an internal combustion engine is rubber-mounted on a vehicle body frame, to permit the rider(s) to enjoy a feeling of pulses. A rod-like frame member mounted at its one end to an engine body is abutted at its other end on a bottom plate of a rider's seat.

Abstract: A suspension assembly for a front end of a vehicle to provide lateral flex for absorption of lateral forces. The suspension assembly comprises a steering shaft including two ends: an end coupling to an upper triple clamp and the other end coupling to a lower triple clamp. A spring unit is coupled to one of the two ends of the steering shaft and absorbs forces that are transferred from a road surface up through a front wheel and the pair of forks retained by the upper and lower triple clamps. A pivot mechanism is coupled to the other one of the two ends of the steering shaft to create a pivoting axis. The suspension assembly permits the front end to pivot about the pivoting axis and the spring unit to flex in response to bumps in the road surface.

Abstract: A bicycle seat post assembly includes an outer tube with an inner tube movably inserted thereto, the top end of the inner tube is connected with a seat. The inner tube has a passage defined longitudinally therethrough and a valve is connected to the lower end of the inner tube. A connection member is connected to the lower end of the outer tube and a seal member or an output tube is selectably connected to the connection member. The seal member seals the lower end of the outer tube to form a interior space in the outer tube filled with pressurized air when the bicycle seat assembly is a shock absorbing seat post assembly. The output tube is connected to the connection member to communicate with the longitudinal passage of the outer tube when the seat post assembly is used as a tire pump by reciprocating the inner tube.

Abstract: This application relates to rear suspension system for bicycles, such as freeride, downhill and trail-style mountain bikes. The suspension system includes a rear suspension for coupling the rear wheel of the bicycle to the bicycle frame, a rear shock absorber disposed entirely in front of the seat tube of the frame and a linkage for operatively coupling the rear suspension to the rear shock absorber. The linkage intersects the longitudinal axis of the seat tube for transmitting rear suspension forces around the seat tube to the rear shock absorber. The seat tube is preferably continuous and is disposed so that the bicycle seat is adjustable over a full range of seat positions. The seat tube orientation ensures that the seat is movable between optimum biomechanical positions for both uphill pedaling and aggressive downhill freeriding.

Abstract: A bicycle rear wheel suspension system includes an upper link and a lower link both pivotally attached to the frame and to a rear stay member. An instantaneous center of rotation of the rear stay member is defined at an intersection between an upper axis extending through first and second pivots of the upper link and a lower axis extending through third and fourth pivots of the lower link. Throughout a travel distance of a shock absorber of the suspension system, the instantaneous center of rotation remains below an average chain torque line of the bicycle, the lower axis remains above an axle axis extending through the rear wheel axle, and a portion of the lower axis defined between the third and fourth pivots extends below the average chain torque line.

Abstract: Rear bicycle frame structure of the kind comprised of different rear triangles that make up a common tubular structure (C) that forms part of the front frame, an upper tie bolt (ts) and a lower tie bolt (ti); characterised because the upper tie bolt (ts) and the lower tie bolt (ti) are joined by means of a fourth side (t4) forming a four-sided piece. The rear axle (P2) is placed on the fourth side (t4) of each rear four-sided piece formed.

Abstract: A bicycle with a common point shock absorber comprises a bicycle frame and a shock absorber. The bicycle frame comprises a front frame and a rear frame, an upper linkage device and a lower linkage device connected pivotally to the front frame and the rear frame. The shock absorber is mounted in the bicycle frame and comprises a first connecting member connected pivotally to the upper linkage device, and a second connecting member connected pivotally and coaxially to the lower linkage device and the front frame. Thus, assembling the component and the assembly process can be simplified. Convenience for component assembly and repair has been improved. Manufacturing costs are reduced.

Abstract: A bicycle seat suspension suitable for use on other vehicles and equipment which is both lightweight and durable and can be constructed from inexpensive material such as steel or aluminum. The seat suspension consists of a top frame and a bottom frame joined together at the front by a pinned hinge and at the rear by a triple hinge slightly elevated at the top. Suspension is provided by various sprung configurations, one of which is a centrally located spring operated by means of an adjustable push rod, another by means of dual shock absorbing Springs. The actual configuration dependant on frame construction and or rider weight.

Abstract: A bicycle frame assembly includes at least one frame member having a connecting portion, and at least one shock absorber formed as a looped plate member disposed detachably in the connecting portion. The looped plate member has two resilient plate portions each having two opposite ends, and an intermediate portion between the opposite ends. The resilient plate portions are interconnected at the opposite ends. The intermediate portions of the resilient plate portions extend away from each other.

Abstract: A bicycle frame set comprising a main frame and a rear wheel suspension system including a swing-arm, a first link member and an intermediate lower link member. The swing arm has a forward end pivotally connected to the main frame. The swing-arm pivots such that a rear wheel axle on the swing-arm pivots about the lower pivot point on the frame with a constant radius of rotation. The first link member is pivotally connected to the main frame at a link pivot point, and has a displaceable lower end pivotable about the link pivot point. The intermediate lower link member is pivotally connected between the first link member and the swing-arm. The first link member rotates in a direction opposite to the rotation of the swing-arm as the suspension system compresses. A shock absorber is disposed between the first link member and the main frame.

Abstract: A bicycle designed to reduce the transfer of vibrations to the rider. The bicycle includes a frame having a first frame element and a second frame element. A first wheel is coupled to the frame and a damping member is disposed between the first frame element and the second frame element. The damping member provides vibration damping between the first frame element and the second frame element.

Abstract: A bicycle frame assembly including a down tube and a monolithic down tube support. The down tube support preferably defines a pocket configured to receive an end portion of the down tube such that the tube support overlaps at least a portion of a side surface of the end portion of the down tube. In one embodiment, a weld bead joins both of the tube support and the down tube. Preferably, the down tube support also defines an opening configured to receive and support a pedal crank assembly relative to the bicycle frame. Furthermore, preferably the down tube support also includes a pivot mount portion configured to rotatably support a sub-frame of the frame assembly or a rear shock absorber.

Abstract: A suspension system that requires minimal or no welding and can be easily adapted for use with a variety of frame configurations without adversely affecting the frame integrity. One embodiment includes a top bearing (21), a base bearing (31), an upper clamp (19), and a strut (41). The bearing inserts may be secured with conventional fastening means, for example, adhesives or screws. In one embodiment, a lower spring seat may be secured with a snap ring and heat sensitive materials may be used. Thus, the suspension systems may, if welding is necessary, be installed using standard frame welding practice without the need for extraordinary or special fixtures or procedures. Options are thus now available in component material selection and suspension configuration which have previously been limited because of the heat of welding. This frame integral technology may be used with only minor changes to current fabrication practices.

Abstract: A suspension system for the front wheel of single wheeled vehicles having a single front wheel, such as bicycles, tricycles and motorcycles. The suspension system consists of a frame with a variable arrangement of the steering points using at least one swingable arm, multiple fork joints at least one of which is designed as a two-part fork joint that provides for variable distances between the steering axis, and a telescopic fork connected to the front wheel and which has at least three parts so that the front wheel is guided through the entire system whether partly or fully sprung.

Abstract: A rear bicycle suspension has a main frame including a seat riser tube, a down tube, head tube, and a bottom bracket housing having left and right sides, a guide arm and a shock mount attached to the main frame, a pair of swing arm assemblies each one in pivotal attachment on either side of the main frame at a first pivot point and to a bell crank at a second pivot point, the swing arms in rearward extension form the first and second pivot points to at least one rear swing arm attachment point, and further including a lever arm connected between the first and the second pivot points, a guide arm having first and second ends wherein the first end in pivotal attachment to the guide arm bracket at a fifth pivot point and the second end extends upward and rearward from the fifth pivot point, wherein the bell crank is pivotally connected between the lever arms at the second pivot point and to the guide arm at a third pivot point, a shock absorbing member in pivotal attachment at one end to the shock mount and at a

Abstract: A bicycle including a suspension system operably positioned between the bicycle frame and at least one of the front wheel and rear wheel of the bicycle. The suspension system includes a damping system including a first valve and a second valve, which cooperate to provide desirable damping forces throughout a broad range of relative velocities of the suspension system, while also being relatively lightweight and compact. The first valve includes a first orifice and a first valve body configured to regulate fluid flow through the first orifice. The second valve includes a second orifice. In one arrangement, the second orifice is defined by the first valve body. In another arrangement, the second valve includes a second valve body configured to regulate fluid flow through the second orifice.

Abstract: Provided is a folding bicycle comprising two auxiliary rear wheels at both sides of a rear wheel; a seat including a seat tube extended downward; a first crossbar having a front end pivotably connected to a lower portion of a handle above a front wheel, and a rear end fixedly connected to an intermediate portion of the seat tube; a pair of second crossbars having two front ends pivotably connected to an intermediate portion of the handle, and two rear ends fixedly connected to both ends of an hub of the rear wheel. The first crossbar passes an intermediate portion of the second crossbar and is pivotably connected thereto. A flexible shock absorbing means is provided at a joining portion of the seat tube and the second crossbars. The shock absorbing means is adapted to elastically deform when a downward force is exerted on the seat.

Abstract: In a rear wheel support structure for a motorcycle or a three-wheeled vehicle in which a proximal end portion of a swing arm is vertically tiltably supported on a vehicle body frame by way of a tilting support shaft, a rear wheel is rotatably supported on the swing arm by way of a rear axle, and a rear shock absorber is interposed between the swing arm and the vehicle body frame. The comfort of the ride is enhanced by ensuring a sufficiently long effective stroke of the rear shock absorber with respect to a stroke of the rear wheel. A tilting support shaft of a swing arm is arranged behind a rear axle in the longitudinal direction of the vehicle.

Abstract: A swinging device for a wheel set includes a center tube, an axle pipe and a restrictor. The center tube has round plates at the rear section. The round plates comprise lugs thereon. The axle pipe has a curved receiving base with a pair of fins extending from respective sides of the receiving base. The fins comprise through holes for insertion of bolts. The restrictor is pivotally connected to the rear section of the center tube and comprises ditches corresponding in position to the round plates of the center tube, so that the lugs of the round plates may be placed therein and slide along the ditches. The restrictor further comprises through holes corresponding in position to the through holes of the receiving base and the bolts. An elastic piece made of plastic material is placed between the rear section of the center tube and the axle pipe.

Abstract: An air suspension system for use with vehicles such as motorcycles and bicycles comprises a sealed chamber inside the handlebars and a fluid line that interconnects the chamber with the vehicle's pneumatic shock absorber, typically part of the forks. Preferably, the system includes a control valve in fluid communication with the chamber and disposed at or between the handlebars or at the forks. In the preferred embodiment, the control valve is connected to a port located near the center of the handlebars. The preferred embodiment also includes a manual pressure release valve in communication with the chamber and an oil/air separator and/or check valve configured to generally prevent oil from entering the chamber. The pressure release valve and/or the separator or check valve can be made integral with or separate from the control valve. Handlebar caps or plugs can be used to seal the handlebars.

Abstract: A wheeled vehicle has a front suspension unit coupled with a body frame to suspend a front wheel. The front suspension unit allows the front wheel to move relative to the body frame. The front suspension unit has a pair of front suspension members coupled with each other. A rear suspension unit is coupled with the body frame to suspend a rear wheel. The rear suspension unit allows the rear wheel to move relative to the body frame. A hydraulic system inhibits a position of the body frame from changing relative to the ground. The hydraulic system has a first hydraulic device to generate hydraulic pressure in response to the movement of the front wheel relative to the body frame. A second hydraulic device generates hydraulic pressure in response to the movement of the rear wheel relative to the body frame. A hydraulic pressure adjusting device connects the first and second hydraulic devices with each other.

Abstract: A bicycle including a frame having a main frame portion and an articulating frame portion pivotally mounted to the main frame portion and carrying a rear wheel of the bicycle. A shock absorber preferably is operably connected between the main frame portion and the articulating frame portion. Preferably, the top tube and down tube of the main frame contact one another for a distance extending rearwardly from the head tube of the main frame. In one arrangement, the down tube has a non-circular cross-sectional shape.

Abstract: A two-piece bicycle frame pivotably attached together at a pivot point with a biasing mechanism adjacent to the point of attachment. The bias mechanism bears an angle of between 30° to 60° relative to true horizontal. Each frame section has a relative plane which planes in relation to one another bear an angle exceeding 180° when no weight is on the bicycle.

Abstract: A bicycle suspension assembly elastically supports a first frame member to a second frame member. The suspension assembly preferably forms a bottom bracket unit that allows the rear frame member to pivot about the axis of the bicycle crank axle without any adverse affects to the drive train assembly. Preferably, the suspension assembly includes a first suspension member, a second suspension member, a first bearing unit, and a shock-absorbing structure. The first bearing unit is operatively disposed between the first and second suspension members to movably support the first suspension member for rotation relative to the second suspension member about a center pivot axis. In the preferred embodiment, each of the shock-absorbing structure includes a plurality of biasing members. Preferably, the suspension assembly includes a second bearing unit that is axially spaced from the first bearing unit along the center pivot axis.

Abstract: A system and method for mounting a shock absorber to a bicycle frame. The system preferably includes at least one spacer having a first spacer member and a second spacer member. Each of the first and second spacer members include a curved contact surface configured to contact the respective surface of the other spacer member. A first one of the spacer members is located relative to the bicycle frame and the second one of the space members is located relative to the shock absorber. The shock absorber and the second one of the spacer members may be rotated relative to the first spacer member and the bicycle frame to achieve a desired alignment between the shock absorber and the bicycle frame to compensate for misalignment between the mounting structures on the bicycle frame for a respective first and second ends of the shock absorber.

Abstract: A bicycle frame set comprising a main frame and a rear wheel suspension system. The rear wheel suspension system comprises a first link member with an upper end pivotally connected to a seat tube of the main frame at a link pivot point located rearward of an axis extending between a bottom bracket of the main frame and an intersection of the seat tube and a top tube of the main frame. The first link member has a displaceable lower end pivotable about the link pivot point. The swing-arm is pivotally interconnected with the main frame proximate the bottom bracket and has a rearward end adapted to engage a rear wheel axle. The swing-arm is pivotally connected with the first link member at a point thereon intermediate the upper and lower ends. A shock absorber is affixed between the main frame and the lower end of the first link member.

Abstract: A suspension system for a vehicle with a chain driven rear wheel includes: a rear suspension assembly and chain driven transmission arrangement that offers very high levels of anti-brake lift and anti-squat and does so consistently through a large range of rear suspension movement; a front suspension assembly/steering system with a steering axis inclined in the side view at an angle of castor which intersects the ground in front of the center of the contact patch, the front suspension assembly having a high degree of anti-brake dive; the front and rear suspension assemblies being interconnected in such a way as to offer low resistance to anti-phase motion and higher resistance to in-phase motion.

Abstract: The invention relates to a bicycle adjusting device, in particular an adjusting device for adjusting the height of the front wheel suspension, the rear wheel suspension, the saddle or of the steering mechanism of a bicycle, e.g. of a mountain bike, a bicycle with at least one bicycle adjustment device, as well as a bicycle-steering head bearing system, whereby the adjustment has at least one double-acting piston-cylinder assembly with a first cylinder space (14a, 34a) and a second cylinder space (15a, 35a) in each case, and whereby the two cylinder spaces of the two adjustment devices are interconnectable by means of a fluid duct fitted for that purpose.

Abstract: The present invention relates to the front suspension containing elastic (14) and damping (11) elements, for vehicles with front steerable wheel, such as bicycles, motor-bicycles, motorcycles or tricycles. To minimise the total mass of the unsprung suspension elements, by relocating the elastic and the damping elements to the springing side, the suspension contains at least one cable (10) connected at one end to the upper part of the front wheel fork (1), able to shift in relation to the fork column (6) of the handle bar (7), and at the other end to the elastic element (14) and/or the damping element (11), supported on at least one end by the vehicle frame (8), wherein the cable (10) goes through the handle bar (7) steering axis. The cable (10) is preferably led on at least one leading element (16) supported by the vehicle frame. Optionally, the cable (10) may be connected on the other end to the fork (18) of the vehicle rear suspension.

Abstract: The present invention discloses unique apparatus for attaching a bicycle seat to a typical bicycle seat support post. The seat attaching apparatus permits the seat to controllably tilt, to the left and/or right of the bicycle longitudinal center line, as the bicyclist leans left or right as he/she pedals along. Thus, friction that normally occurs between the bicycle seat and the rider's inner thigh and crotch area significantly reduced or eliminated.

Abstract: A suspension system for the front wheel of single wheeled vehicles having a single front wheel, such as bicycles, tricycles and motorcycles. The suspension system consists of a frame with a variable arrangement of the steering points using at least one swingable arm, multiple fork joints at least one of which is designed as a two-part fork joint that provides for variable distances between the steering axis, and a telescopic fork connected to the front wheel and which has at least three parts so that the front wheel is guided through the entire system whether partly or fully sprung.

Abstract: A structural member (38, 40) is designed to have a first portion having a first composite layup, a second portion having a second composite layup, and at least one center portion having at least a third composite layup such that it can flex near a desired point of the structural member. The structural member may be used as a chain stay (26) in a bicycle frame (10). The chain stays are designed to have a geometry that will allow for flexing or bending at or in the vicinity of a desired point. They may be pre-loaded for flex in both a positive and negative direction. The chain stays are designed having a varying cross sectional area. The bending or flexing location of the chain stays has a narrower height from the side view than the ends of the chain stay allowing the chain stay to flex. Additionally, the bending or flexing location has a wider width from the top view than the ends of the chain stay for additional torsional and lateral stiffness.

Abstract: A bicycle designed to reduce the transfer of vibrations to the rider. The bicycle includes a seatpost assembly comprising an inner member, an outer member at least partially surrounding a portion of the inner member, and a damping member disposed between the inner member and the outer member. The damping member provides vibration damping between the frame and the seat. Preferably, the inner member includes a necked portion positioned within the damping member. In addition, the damping member can include a body portion positioned inside the outer member and a head portion positioned longitudinally adjacent the outer member. The concepts of the present invention are also applicable to frame members of the bicycle frame, such as the chainstays, the seatstays, and the fork.

Abstract: A bicycle is provided with a body frame, a swing arm structure, a rear wheel, and a transmission. The transmission includes a drive rotation body to be rotation-driven by a crankshaft, and a plurality of gear-change rotation bodies. The transmission is provided with an output axis supported to be rotatable to a support member fixed to the bicycle body frame, and drive-coupled to the plurality of gear-change rotation bodies, and a gear-change pulley for drive-coupling the drive rotation body and the operation rotation body alternatively selected from the plurality of gear-change rotation bodies by being placed thereacross by a gear shifting mechanism. The output axis is drive-coupled to the rear wheel via an output pulley, thereby preventing the gear-change pulley from sagging even if the swing arm swings.

Abstract: Disclosed is a front fork damper installed in a bicycle front fork formed of a fork pipe, a bottom case coupled and axially movable relative to the bottom case, and a hydraulic fluid filled in between the bottom case and the fork pipe. The front fork damper is joined to the bottom end of the fork pipe to buffer movement of the bottom case relative to the fork pipe in such a manner that the hydraulic fluid passes upwards through the front fork damper rapidly at a high flow rate, and passes downwards through the front fork damper slowly at a low flow rate.

Abstract: A shock absorbing suspension for the large rear wheels of a wheelchair is disclosed. A fork element is hinged at one end to a clamping member which attaches to a horizontal frame member of the wheelchair. A cylindrical solid polymer shock absorber cushions the movement of the fork element toward the clamping member. The free end of the fork element includes an axleway for the axle of a large wheelchair wheel. The movement of the fork element relative to the clamping member is limited by abutting surfaces on the fork element and the clamping member.

Abstract: A bicycle in one embodiment includes a frame and at least one adjusting device for adjusting at least one of a height of a saddle and a steering stem. The adjusting device includes a double-acting piston/cylinder assembly with a first cylinder chamber and a second cylinder chamber, which are separated from each other by a piston. An area of the piston limiting the first cylinder chamber being larger than the area of the piston limiting the second cylinder chamber. A locking device is proved for locking the piston.

Abstract: An improved vibration suppressed bicycle structure includes a frame and a handle set that have ceramic piezoelectric elements located thereon to couple with passive and active control energy consuming mechanisms to convert the vibration energy of the bicycle body into electric energy, which is consumed in heat or gathered for active control use. The invention can absorb vibration energy of the bicycle to enhance structural performance, reduce vibration, and give bicycle riders more comfort over long distance rides and improved maneuverability.

Abstract: A rear suspension system for a bicycle. The system directs the rear wheel along a predetermined, S-shaped path as the suspension is compressed. The path is configured to provide a chainstay lengthening effect only at those points where this is needed to counterbalance the pedal inputs of the rider; at those points on the wheel travel path where there is a chainstay lengthening effect, the chain tension which results from the pedal inputs exerts a downward force on the rear wheel, preventing unwanted compression of the suspension. The system employs a dual eccentric crank mechanism mounted adjacent the bottom bracket shell to provide the desired control characteristics.