A bicycle frame includes a tube with a hollow portion. The tube has an opening that provides access to the hollow portion, and the tube also includes one or more recessed flanges adjacent to the opening. The bicycle frame also includes a cover holder configured to mount to the one or more recessed flanges adjacent to the opening in the tube. The bicycle frame further includes an in-tube storage cover that mounts to the cover holder such that at least a portion of an exterior surface of the in-tube storage cover is flush with an outer surface of the tube. The in-tube storage cover includes a lever mounted on the exterior surface of the in-tube storage cover.

A system for a bicycle includes a plurality of controller devices. A type of controller device is the same for two or more controller devices of the plurality of controller devices. The system includes a pairing coordinator device configured to receive a respective device type identification from each controller device, and identify the type of controller device for the two or more controller devices based on the received device type identifications for the two or more controller devices. Based on the identification of the type of controller device, the pairing coordinator device is configured to update the device type identifications for the two or more controller devices, respectively, such that the updated device type identifications are different than each other. The pairing coordinator device is configured to pair only controller devices of the plurality of controller devices having different respective device type identifications with the pairing coordinator device.

A system for a bicycle includes a plurality of controller devices. A type of controller device is the same for two or more controller devices of the plurality of controller devices. The system includes a pairing coordinator device configured to receive a respective device type identification from each controller device, and identify the type of controller device for the two or more controller devices based on the received device type identifications for the two or more controller devices. Based on the identification of the type of controller device, the pairing coordinator device is configured to update the device type identifications for the two or more controller devices, respectively, such that the updated device type identifications are different than each other. The pairing coordinator device is configured to pair only controller devices of the plurality of controller devices having different respective device type identifications with the pairing coordinator device.

An armrest handlebar and a bicycle handlebar assembly having the armrest handlebar are disclosed. The bicycle handlebar assembly includes a steering handlebar, the armrest handlebar, and two armrest pads. The steering handlebar is pivotally engaged with a frame. The armrest handlebar includes two extending tubes which are engaged with the steering handlebar. Each of the extending tubes includes a combining segment, a lifting segment, a leaned segment, and a holding segment which are sequentially disposed. The lifting segment is raised above the combining segment at a first angle, and the leaned segment is raised above the combining segment at a second angle. A curved surface is formed by recessing from a top surface of each of the leaned segments. Each of the two armrest pads is engaged with the steering handlebar and has a concave surface for a rider to lean on.

An armrest handlebar and a bicycle handlebar assembly having the armrest handlebar are disclosed. The bicycle handlebar assembly includes a steering handlebar, the armrest handlebar, and two armrest pads. The steering handlebar is pivotally engaged with a frame. The armrest handlebar includes two extending tubes which are engaged with the steering handlebar. Each of the extending tubes includes a combining segment, a lifting segment, a leaned segment, and a holding segment which are sequentially disposed. The lifting segment is raised above the combining segment at a first angle, and the leaned segment is raised above the combining segment at a second angle. A curved surface is formed by recessing from a top surface of each of the leaned segments. Each of the two armrest pads is engaged with the steering handlebar and has a concave surface for a rider to lean on.

A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

A walker specialized for use on trails by pushing and walking, rather than riding on, with no drivetrain is provided. The walker can include a frame, two inline wheels, and a handlebar steering mechanism. The walker can further include a braking mechanism, an elbow rest, an electric motor, and racks and/or carriers for gear.

A walker specialized for use on trails by pushing and walking, rather than riding on, with no drivetrain is provided. The walker can include a frame, two inline wheels, and a handlebar steering mechanism. The walker can further include a braking mechanism, an elbow rest, an electric motor, and racks and/or carriers for gear.

A bicycle includes a front wheel and a rear wheel and a frameset supported on the front wheel and the rear wheel. The frameset includes a main frame and a front fork rotationally coupled to the main frame. The main frame includes a top tube, a head tube rotationally supporting the front fork, a down tube coupling the head tube to a bottom bracket, a seat tube extending downward from the top tube and including a lower end spaced from the bottom bracket, a seatstay extending rearward from the lower end of the seat tube, and a strut member extending forward from the lower end of the seat tube and connecting the seat tube to the down tube.

A bicycle includes a front wheel and a rear wheel and a frameset supported on the front wheel and the rear wheel. The frameset includes a main frame and a front fork rotationally coupled to the main frame. The main frame includes a top tube, a head tube rotationally supporting the front fork, a down tube coupling the head tube to a bottom bracket, a seat tube extending downward from the top tube and including a lower end spaced from the bottom bracket, a seatstay extending rearward from the lower end of the seat tube, and a strut member extending forward from the lower end of the seat tube and connecting the seat tube to the down tube.