Abstract: A mold and an injection process for making a one-piece bicycle frame made of recyclable polymer. The mold includes one stationary part and one movable part. Sliding columns with guiding lower portions are formed in the stationery part. Both the stationary part and movable part are provided with base plates for supporting bearing cavity plates that collectively form a structural channel that receives a thermal injected polymer. The cavity bearing plate of the movable part includes a longitudinal bed that receives a main central drawer and side beds that receive secondary drawers. The longitudinal bed includes peripheral tracks enabling the main drawer to slide. The bed includes drawing pins positioned at an angle, allowing the main drawer to move horizontally. The side beds also include drawing pins for the secondary drawers.

Abstract: A process of making a base of a shock-absorbing front fork for a bicycle, includes the steps of winding pre-pregs around an upper section of each of two cured straight tubes to form a bridge having a foamed core therein, and placing the two straight tubes and the bridge in a mold and heating the mold for curing the bridge such that the bridge and the straight tubes are connected integrally.

Abstract: A vehicle body frame of a motorcycle includes a head pipe, a pair of main frame sections extending rearwardly from the head pipe, a pair of pivot plates joined to end portions of the main frame sections, and a crossmember arranged between the pivot plates. In such vehicle body frame, the crossmember is arranged between upper end portions of the pivot plates such that the upper end portions of the pivot plates are sandwiched between the crossmember and rear end portions of main frame sections so that at least a portion of the crossmember overlaps a joint portion between the main frame sections and the pivot plates as viewed in a side view. Such structure of the vehicle body frame ensures the rigidity of connecting portions where the crossmember is connected to pivot plates without making the vehicle body frame heavy and thick.

Abstract: A head pipe includes a pipe portion and a bracket portion contiguously formed on a rear portion of the pipe portion wherein front end portions of the main frames and a front end portion of the down frame are jointed to the bracket portion. A widthwise center line of the main frames in the vertical direction is directed toward an intermediate portion of the pipe portion in the vertical direction in a side view. An upper surface extension line and a lower surface extension line on the extension in the frontward direction of an upper surface and a lower surface of the main frames pass between an upper end and a lower end of the pipe portion as viewed in a side view. The down frame is inclined to be directed towards the intermediate portion of the pipe portion in the vertical direction as viewed in a side view.

Abstract: A bicycle design includes a seat tube affixed to the chain stay at a fixed distance rearward of the bottom bracket so that the rider sitting on the saddle can comfortably fully extend one leg to place a foot flat on the ground or to use the proper full leg extension for pedaling. The rider sits comfortably upright on the saddle while pedaling and can pedal while standing up. The fixed distance may be on the order of about the height above ground of a heel of the rider's foot sitting on a properly adjusted conventional frame when the foot is outstretched to reach the ground and/or on the order of about a radius of a circle through which the pedals are moved during pedaling of the bicycle.

Abstract: A bicycle rear wheel axle positioning device includes a rod having a curved surface and a flat surface. The rod is connected with a seat stay and a chain stay. A clamp member has a clamp portion and the rod extends through a passage in the clamp portion, wherein the periphery of the passage is corresponding to the curved surface and the flat surface. A first resilient portion and a second resilient portion extend from the clamp portion, respectively. The rear wheel axle is inserted into one side of the clamp portion and the clamp member is movable along the rod. The other side of the clamp portion includes a protrusion which is engaged with one of positioning grooves defined in the curved surface of the rod when the axle is moved to a desired position and a fastening member extends through the two resilient portions.

Abstract: A bicycle frame that supports a front wheel and a rear wheel defining a central plane. The bicycle frame includes a head tube, a bottom bracket configured to support a crank assembly, and a bicycle frame portion. The bicycle frame portion includes a leading edge and a trailing edge oriented such that a chord line between the leading edge and the trailing edge defines an angle of incidence greater than zero degrees relative to the central plane.

Abstract: A bicycle having at least two wheels, a frame supported on the two wheels, a brake, a gear shift mechanism (e.g., a chain derailleur), a shifter (e.g., a shift lever), and a brake mechanism coupled to the brake and also coupled to the gear mechanism (e.g., via an auxiliary shift cable between a brake lever and a shift lever). Preferably, the shifter and brake mechanism are mounted on a handlebar assembly (e.g., the shifter mounted on an extension and the brake mechanism mounted on a base bar). In one embodiment, the brake mechanism comprises a brake support fixedly secured to the handlebar assembly, a lever base pivotally mounted to the brake support for rotation about a first axis, and a brake lever pivotally mounted to the lever base for rotation about a second axis. Preferably, the lever base is rotationally biased relative to the brake support.

Abstract: Front wheel drive vehicles, bicycles or motorized scooters, include an enclosed drive belt connected to provide power to the front wheel through a chain, where the vehicle is steered by way of a front fork extending outside and over the head tube of the frame, and methods of use thereof. Movable linkages, which may be belts, chains, or other linkages, provide power generated using pedals or a motor to the front wheel. The belts are preferably enclosed within the frame or the front fork to prevent interference or damage. A chain is preferably used to drive the front wheel. Having the front fork outside the head tube allows for the head tube to route the linkage from the frame to the front fork without interference by the steering connection to the front wheel, allowing for a full range of motion of the front wheel.

Abstract: A bicycle rear wheel axle positioning device includes a rod having a curved surface and a flat surface. The rod is connected with a seat stay and a chain stay. A clamp member has a clamp portion and the rod extends through a passage in the clamp portion, wherein the periphery of the passage is corresponding to the curved surface and the flat surface. A first resilient portion and a second resilient portion extend from the clamp portion, respectively. The rear wheel axle is inserted into one side of the clamp portion and the clamp member is movable along the rod. The other side of the clamp portion includes a protrusion which is engaged with one of positioning grooves defined in the curved surface of the rod when the axle is moved to a desired position and a fastening member extends through the two resilient portions.

Abstract: A bicycle frame assembly that includes an upper frame member and a lower frame member that each extend between a head tube and a dropout. A seat tube extends between the upper frame member and the lower frame member. The seat tube is preferably connected to a bottom bracket of the lower frame member and is connected by a pivot to the upper frame member so that the seat tube can deflect from a rest position without altering an orientation of a top tube to a bottom tube of the upper and lower frame members, respectively.

Abstract: A bicycle frame assembly that includes at least one joint having a number of steps and laps formed between adjoining frame members. A first frame member includes a male portion of the joint and has at least three steps that are separated by rises between adjacent steps formed on an exterior surface of the first frame member. A second frame member includes a female portion of the joint and has the same number of steps and rises as the first frame member formed on an interior surface of the second frame member. The steps and rises of the first and second frame members are constructed and orientated so that the first frame member slidably cooperates with the second frame member to form a continuous multidirectional joint therebetween.

Abstract: In a motorcycle having a head pipe, and a pair of left and right frame sections including left and right down tubes extended rearward from the head pipe, a cross plate continuously connects the pair of left and right down tubes in a width direction of the motorcycle. The cross plate is elastically connected to the left and right down tubes. Such arrangement of the cross plate suppresses distortion of a pair of left and right frame sections including the down tubes extended so as to be connected by the head pipe, and also improves the controllability and straight traveling characteristic of the motorcycle.

Abstract: A vehicle body frame of a motorcycle comprises a front frame portion extending rearward from a head pipe; and a rear frame portion extending downward or rearward from a rear end of the front frame portion. The front frame portion includes at least a pair of right and left frame members. A forward portion of the rear frame portion is a lumbar frame having a closed cross-section structure portion in which a pair of right and left steel plates and are joined together. Devices such as a canister, and an ABS unit, are easily mounted in spaces lateral relative to the lumbar frame having a reduced width, while ensuring a sufficient stiffness.

Abstract: A vehicle body frame of a motorcycle comprises a front frame portion extending rearward from a head pipe, and a rear frame portion extending downward or rearward from a rear end of the front frame portion. The front frame portion includes at least a pair of right and left frame members. A front end of the rear frame portion is welded to a center cross member coupling rear ends of the frame members. The center cross member has a closed cross-section structure in which plate members are joined together in a forward and rearward direction. Thus, a fuel tank and devices can be laid out more flexibly from a location above the center cross member to a location behind the center cross more flexibly and mounted more easily.

Abstract: An elevating device for seat cushion of bicycle includes a cylinder having at least one level to expand or contract inside a frame tube of a bicycle frame, a stick for operating the cylinder, and a driving device for driving the stick. By the driving device, the stick below the seat cushion will press the cylinder so as to make an adjustment of the height of the seat cushion. Therefore, the elevating operation for seat cushion of bicycle is easy and convenient to adjust a proper height of the seat cushion for getting on/off the bicycle and also for comfortable riding.

Abstract: A bicycle seat post includes a head for mounting with a seat, and a tubular body extending downwards from the head and having a hollow portion at a periphery thereof for insertion of a seat tube. Thus, the bicycle scat post can offer a flexible structure to increase the effective contact area between the tubular body and the seat tube, such that the bicycle seat post can be thinly fixed to the seat tube for enhancing the structural stabilization.

Abstract: There is provided a wheel mounting assembly having a wheel fork. The fork includes an interior and an inwardly extending protrusion disposed within the interior. The assembly includes a rotatable member operatively connected to the fork and disposed within the interior of the fork. The protrusion abuts and positions in place the rotatable member. The assembly includes a shaft. The rotatable member rotatably connects the shaft to the wheel fork. The assembly includes a retaining member connected to the shaft. The retaining member is configured to abut the protrusion of the fork and thus inhibit dislodgement of the rotatable member from the fork when the shaft is tilted relative to the fork.

Abstract: A bicycle frame is provided comprising: two substantially concentric rings connected along a front portion and flared out at a rear portion to enable a rear bicycle wheel to fit there between, the two substantially concentric rings enabled to absorb strain energy received from at least one of the rear wheel and weight from a rider; a seat post for receiving a bicycle seat, the seat post extending from a top portion of the two substantially concentric rings; a rear wheel bracket extending from a bottom rear portion of each of the two substantially concentric rings for supporting the rear wheel between the two substantially concentric rings; a bottom bracket located proximal a bottom front portion of the two substantially concentric rings, the bottom bracket for connecting at least a crank to the bicycle frame; a headtube for receiving a front fork; and, at least one support for the headtube to connect the headtube to the two substantially concentric rings.

Abstract: A cycle comprises a frame, a front fork and a rear fork. The cycle is convertible between a bicycle, a tricycle and a quad-cycle by replacement of wheels.

Abstract: A system provides for the adjustment of a cycle frame, for example the rake angle, gooseneck height, wheel base, and rear end height of a motorcycle. The system includes a variable length backbone, a variable length downtube, optionally a variable length fork assembly, and optionally a variable height rear end. The length of the backbone, downtube, fork, and height of the rear end can be adjusted, for example, using a linear actuator such as an electro-mechanical ball screw associated with each of the backbone, downtube, fork, and rear suspension. Adjustment of the lengths/heights/angle can be controlled independently of one another and/or in coordination by a controller. The controller comprises a processor, memory, and actuator drive components. The controller can store presets which allow the rider to automatically adjust the variable length components to specific lengths that provide a desired rake angle, gooseneck height, wheel base length, rear end height, or combination thereof.

Abstract: A bicycle stem includes a stem body (2) that is provided with first elements (3) adapted to attach the bicycle stem to a pivoting tube and second elements (25) adapted to attach a handlebar to the stem. The handlebar include a U-shaped cap (27) that has first connecting elements (32) that connect to second connecting elements (33) that are provided at the front end of the stem body (2) to attach the U-shaped cap (27) opposite a recess (30) provided on the front end of the stem body to receive the handlebar. The length of the stem can be modified using a crescent-shaped spacer (35) that is placed in a U shape for obtaining a reduced length of the stem or in the recess (30) to obtain a more significant length.

Abstract: A detachable top tube apparatus includes two tubes, two spring-biased detents, two hooks, two latches and an elastic element. The tubes are telescopically connected to each other. Each of the spring-biased detents is connected to a related one of the tubes. Each of the hooks includes a portion inserted in a related one of the tubes. Each of the latches each including two wings pivotally connected to a related one of the tubes between a releasing position and a locking position. In the releasing position, each of the latches allows a portion of a bicycle to be hooked by and unhooked from the related hook. In the locking position, each of the latches retains the portion of the bicycle hooked by the related hook. The elastic element interconnects the tubes.

Abstract: A modular wheelchair assembly is adapted to be reconfigured between a fixed angle of tilt, a dynamically adjustable tilt-in-space configuration with the tilt axis being near the user's knees and a dynamically adjustable tilt-in-space configuration with the tilt axis being near the user's center of gravity. The reconfiguration is achieved by modifying a limited number of selectively removable components of the support assembly or the pivot assembly of the wheelchair.

Abstract: A bicycle front fork includes an upright tube and an inverted U-shaped body having a crown and two blades downwardly and respectively extending from two ends of the crown. The crown includes a top wall through which the upright tube penetrates, a bottom wall abuttedly connected with a bottom end of the upright tube, a front wall connected between the top wall and the bottom wall and spaced from the upright tube, and a rear wall connected between the top wall and the bottom wall and spaced from the upright tube. The blades each have a tubular shape with an intermediate rib therein. By this way, the amount of fiber fabric prepreg used at the joint between the upright tube and the inverted U-shaped body for structure reinforcement can be reduced, such that the bicycle front fork is light in weight and strong in structural strength.

Abstract: A bicycle construction includes a unitary frame having a “Y” shape formed by a central longitudinal bar, a lower bar and an arcuate medial bar. The central longitudinal bar is bifurcated at its trailing end, forming first and second rear wheel mounting members that are positioned on opposite sides of a longitudinal axis of symmetry of the unitary frame. A first bore formed in the common leading end of the central longitudinal bar and the lower bar accommodates a handlebar tube. A second bore formed in a trailing end of the central longitudinal bar accommodates a seat support tube. A third bore formed in a trailing end of the lower bar accommodates a primary socket wheel axle. Fourth and fifth bores formed in respective trailing ends of the first and second wheel mounting members in cooperatively aligned relation to one another accommodate a secondary sprocket wheel axle.

Abstract: A bicycle frame includes a front section and a rear section. The front section includes a front frame portion having a front coupling configured to receive a front wheel support member and to allow rotation between the front coupling and the front wheel support member, the front frame portion defining a central vertical plane of the frame. The rear section includes a drive link case having an upper tube, a lower tube, a rear hub housing, and a front sprocket housing all integrally arranged with each other to form a rigid drive link case having an opening disposed between the upper and lower tubes, the drive link case being connected to the front frame portion via the front sprocket housing. The drive link case is disposed eccentric to the central vertical plane and is cantilevered rearward from the front sprocket housing. The front frame portion extends forward from the front sprocket housing.

Abstract: Disclosed are various embodiments of a mountain bike frame and method of making a mountain bike frame where a rear suspension shock absorber is configured to compress when a rear triangle moves upwardly with respect to a force channelling top tube and a seat tube. At least portions of forces generated by upward movement of the rear triangle with respect to the force channelling top tube and the seat tube are transmitted through elongated front and rear torque conversion devices to the shock absorber, a shock absorber mount and the force channelling top tube. An upper portion of the front torque conversion device and a rear portion of the rear torque conversion device, when the mountain bike frame is viewed from a right side view, each rotate in a clockwise direction when the rear triangle moves upwardly with respect to the force channelling top tube and the seat tube.

Abstract: A bicycle design includes a seat tube affixed to the chain stay at a fixed distance rearward of the bottom bracket so that the rider sitting on the saddle can comfortably fully extend one leg to place a foot flat on the ground or to use the proper full leg extension for pedaling. The rider sits comfortably upright on the saddle while pedaling and can pedal while standing up. Increasing the height of the saddle by extending the seat post tube for a taller rider increases the space between the saddle and the handle bars. The fixed distance may be on the order of about the height above ground of a heel of the rider's foot sitting on a properly adjusted conventional frame when the foot is outstretched to reach the ground and/or on the order of about a radius of a circle through which the pedals are moved during pedaling of the bicycle. The fixed distance is preferably in the range of about 4? to 8? and most preferably about 6?.

Abstract: Bicycle frames having rear stays that extend past the seat region and connect directly to the top region without being rigidly connected to the seat region. Some bicycle frames according to the present disclosure have a greater vertical compliance than comparably sized standard diamond frames having seat stays that are connected directly and rigidly to a seat tube.

Abstract: The frame (10) comprises a seat tube (11) to the top end (11a) of which a saddle (12) is to be connected, and a front structure (14) and a rear structure (15) which are identical and have, in side view, a generally V-shaped configuration with the ends (14a, 14b; 15a, 15b) connected to the seat tube (11) and the respective vertices (14c, 15c) facing in opposite directions relative to the seat tube (11).

Abstract: A bicycle is provided having a frame with a seat tube and a bottom bracket coupled to one end of the seat tube. A pedal crank shaft is operably coupled to the bottom bracket. A motor is coupled to the bottom bracket and operably coupled to the pedal crank shaft. A battery is removably coupled to the frame and electrically coupled to the motor. A seat having a seat post is removably coupled to the seat tube, wherein the battery is disposed to remain coupled to the frame when the seat post is removed. In another embodiment, a sleeve is positioned with in the seat tube and the seat post is slidingly disposed in the sleeve. In another embodiment, the bicycle includes a clamp having a plurality of clamp pads that engage the seat post to hold the seat in the desired position.

Abstract: A motorcycle includes a head pipe that supports a steering shaft which is arranged to rotate freely, a body frame connected to the head pipe, and an engine supported by the body frame in a suspended state. The body frame includes a main frame that extends obliquely downward to the rear from the head pipe and a pair of left and right subframes that extend obliquely downward to the rear from the main frame. The engine includes a crankcase and a cylinder that extends obliquely upward to the front from the crankcase. The cylinder is supported by a rear end of the main frame. The crankcase is supported by portions in two places separated to the front and the rear in the respective subframes.

Abstract: A bicycle frame comprising a first tubular member having a first main portion and a first interface portion (e.g., a rounded taper), and a second tubular member having a second main portion and a second interface portion engaged with the first interface portion to create a joint. The joint includes a peripheral channel defined between the first interface portion and the second interface portion, and a weld is positioned in the peripheral channel. The second interface portion is defined at least partially by a substantially flat face wall. Preferably, the first tubular member includes an open end at the first interface portion, while the flat face wall at the second interface portion is substantially closed. In addition, it is preferred that the face wall lies in a plane that is substantially parallel to a longitudinal axis of the head tube (e.g., within ten degrees of the longitudinal axis).

Abstract: A bicycle comprises a frame. A portion of the frame includes a substrate and a layer of nano-crystalline material extending over at least a portion of the substrate. A conductive interface is disposed between the substrate and layer of nano-crystalline material for improved adhesion of the layer of nano-crystalline material to the substrate and improved impact performance of the frame portion.

Abstract: An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.

Abstract: A body frame for a vehicle such as a motorcycle with a minimized number of parts. A main frame is connected to a head pipe and supports a rear arm to which a rear wheel is attached. A tank rail is connected to the head pipe at one end and to the main frame at the other end.

Abstract: An adjustable quick release system and mechanism for use with a bicycle frame, a unicycle frame or other frame is disclosed. An embodiment of an adjustable quick release mechanism may comprise a housing, a spacer, a tubular nut, a cam system, and a lever.

Abstract: An improved bicycle rear drop out assembly combined with a flexible power transmission means, such as a chain or belt. The assembly consists of plates allowing installation through the bicycle's support frame stays and tensioning of the flexible power transmission device. When fastening the plates together the receiving gap the belt was installed in is closed and concurrently the plates are secured in the desired location for optimal operation of a belt drive system to power the wheel.

Abstract: A quick release camming mechanism is used in a seat post clamp that secures a seat post to a seat tube. Whereas prior art quick release mechanisms have only a single lever, this mechanism has two independently rotatable levers. About half the force is required to independently push either lever closed as to push both levers closed simultaneously. Similarly, about half the force is required to open either lever individually as to open them simultaneously.

Abstract: A transport device for transporting a user may include a first riding platform to support a user and to propel the user, a second riding platform being opposed to the first riding platform to support the user and to propel the user, and a leading traverse frame member to connect the first platform with the second platform. The leading traverse frame member may allow the first rider platform to move radially and to move axially with respect to the second rider platform. The first riding platform may be connected to the second riding platform with a trailing frame member, and the trailing frame member may allow the first platform to move axially and move radially with respect to the second riding platform. The leading frame member may include a ball clevis, and the trailing frame member may include a ball clevis. The transport device may include a handle to propel the transport device, and the handle may be connected to a rack and pinion device.

Abstract: A bicycle frame is provided in which the head tube, top tube and down tube are constructed as a single structural unit with the ends of the top tube and down tube left open to allow for ease of molding.

Abstract: A storage element and bicycle frame that work in conjunction with each other to make both the frame and storage element as aerodynamic as possible when the storage element is attached to the frame. The storage element is designed to function as an integral aerodynamic element of the frame.

Abstract: An improved all composite bicycle frame has three integral mating portions for the main triangle, asymmetric bottom bracket, improved composite layup, wall thickness, and tube geometry providing lighter weight and increased strength in an economical manner, an improved telescoping seat attachment fitting an integral seat mast and a fork having improved strength, weight and performance properties.

Abstract: A bicycle frame includes a transversal tube, a front tube, a seat tube, a bottom bracket assembly and a chain stay assembly. The transversal tube has a front portion, an angle portion, a connecting portion and an extension portion. The angle portion is curved and connects the rear end of the front portion and the connecting portion so that the front portion is not parallel to the connecting portion. The extension portion is extended rearward from the connecting portion. A receiving space is defined in the connecting portion and the extension portion, and the receiving space is longitudinal. A joint position is defined between the connecting portion and the extension portion. The front tube is disposed on the front end of the front portion. The seat tube is disposed on the joint position. The bottom bracket assembly and the chain stay assembly are both disposed on the transversal tube.

Abstract: A bicycle frame provided with increased stiffness in one direction without increasing the stiffness in another direction. In particular, a bicycle frame is provided that increases the stiffness in the lateral direction while not increasing the stiffness in the vertical direction.

Abstract: A bicycle assembly can include a bicycle frame that can have a head tube, a top tube and a down tube. The top tube and down tube can be attached to the head tube. The head tube can include at least one ledge configured to fit inside either of the top and down tubes. The top of the top tube and/or the bottom of the down tube can be substantially flush with the top of the head tube or bottom of the head tube, respectively.

Abstract: A bicycle frame comprising a first tubular member having a first interface portion, and a second tubular member having a second interface portion engaged with the first interface portion to create a joint. The joint includes a peripheral channel having a depth that is greater than a wall thickness of the first tubular member, and a weld is positioned in the peripheral channel. To enhance the transition from the first main portion to the second main portion, the second tubular member can include a fillet surface between the second main portion and the second interface portion. The fillet surface is contoured to provide a smooth transition between the top tube and the head tube. An outer surface of the first interface portion can be offset from an outer surface of the first main portion to thereby create a shoulder.

Abstract: A bicycle seat post assembly that dampens movement between a seat and a bicycle frame. The seat post assembly includes a seat post, a collar that passes through the seat post, and a dampener that is disposed between the collar and the seat post. The collar is pivotably connected to the seat post so that the collar can rotate relative to the seat post. The collar rotates about an axis that extends in a crossing direction relative to both a longitudinal axis of the bicycle frame and a longitudinal axis of the seat post.

Abstract: A bicycle seat tube assembly and seat post can be arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. Desirably, a saddle is configured to be supported by a seat post which connects to a bicycle frame at the seat tube assembly. An open cavity can be formed between the seat tube assembly and the seat post. The open cavity can be configured to allow the system to act as a spring. Further, spring stiffness can be adjusted to reduce vibrations and increase damping.