KTM AG

A vibration damper for use particularly on wheeled vehicles. The damper has a cylinder formed to receive damping fluid and a working piston axially moveable therein, which piston is arranged on a piston rod formed with an axial passage and which divides the inner space of the cylinder into first and second working spaces. The vibration damper has a fluid communication axial passage for a fluid flow from the second working space to the first working space, and has a first adjustment device for adjusting the pressure stage damping and a second adjustment device for adjusting the traction stage damping. The first adjustment device has adjustable valve devices to change throughflow openings for the pressure stage, and the second adjustment device has a setting rod arranged in the axial passage of the piston rod for changing a first throughflow opening of a third valve device for the traction stage.

An apparatus and system for actuating a manual gearbox, particularly of a motorcycle having a drive engine, and for carrying out a gear change while the clutch is engaged between the drive engine and the manual gearbox. The apparatus has a selector shaft, which can be actuated rotationally, and a gear-selector drum, which can be actuated rotationally. The gear-changing apparatus has a gear-change lever provided for actuating the selector shaft, and is adapted for influencing the output torque of the drive engine. One or more magnetic sensor(s), such as Hall effect sensors, are provided for sensing rotational actuation of the selector shaft and, optionally, for sensing rotational actuation of the gear selector drum. The sensor(s) send a signal to a controller and mechanisms known for affecting a change in gear to a lower or higher gear.

A fuel tank system is provided with at least two separate tank bodies, each with a respective tank body interior, and a connecting element connecting the tank bodies for fluid communication. The tank bodies are connected to each other by means of a connector and are fabricated from a plastic material. The fuel tank system is formed with receiving means ( 5 ) for arrangement on a frame of a vehicle, such as a motorcycle, having a driver's saddle. The fuel tank system includes a distributor element with a fuel filling opening; the distributor element is connected in a fluid-conducting manner to the tank bodies via at least one fluid-conducting connector.

A method of producing an operating fluid tank includes providing a mold core produced from a mold core material. The mold core has a holding region, by which the mold core is held in a tool mold or in a plastic molding machine. The mold core is surrounded with a plastic melt, and an opening remains in the operating fluid tank. The mold core material is removed from the operating fluid tank by the remaining opening, and a structural element is arranged at the mold core separate from the holding region, and is held by the mold core while being surrounded with the plastic melt. An inner surface of the operating fluid tank is then formed, to which a structural feature arranged on the structural element is transferred. The structural element is removed from the operating fluid tank through the remaining opening after at least partial hardening of the melt.

A telescopic suspension fork leg ( 1, 43 ) is provided, with an inner tube ( 2 ) and an outer tube ( 3 ) and a damping device ( 7 ) and a spring device ( 5 ), which is arranged inside a first chamber ( 5 ) formed in the inner tube ( 2 ) or outer tube ( 3 ) and is supported with respect to a second chamber ( 6 ) formed by the damping device ( 7 ), and the telescopic suspension fork leg ( 1, 43 ) is designed to receive a damping fluid, the damping device ( 7 ) comprising a piston ( 9 ) supported on a piston rod ( 8 ) and having an upper and a lower piston surface ( 10 ); 11 ) and the piston ( 9 ) is displaceable within a damping tube ( 13 ) arranged substantially concentrically to the inner tube ( 2 ) and the damping tube ( 13 ) is surrounded by an annular chamber ( 14 ) arranged substantially concentrically to the damping tube ( 13 ) and a gap space ( 15 ) is formed between the inner tube ( 2 ) and the outer tube ( 3 ) and a sliding bush ( 28 ) radially surrounding the inner tube ( 2 ) is provided and the telescopic suspension fork leg ( 1, 43 ) has a sealing device ( 24 ) radially surrounding the inner tube ( 2 ), which sealing device ( 24 ) has at least one sealing means ( 25 ) supported on an outer circumferential surface ( 27 ) of the inner tube ( 2 ), and a receiving chamber ( 37 ) for receiving damping fluid is provided between the sealing device ( 24 ) and the slide bush ( 28 ), wherein the telescopic suspension fork leg ( 1, 43 ) has at least one fluid passage ( 38 ) between the receiving chamber ( 37 ) and a receiving space ( 39 ) provided on the telescopic suspension fork leg.

A pneumatically operable adjusting device ( 1 ) is provided for acting on a spring device ( 5 ) of a spring damper device ( 3 ) having a tubular body ( 2 ), with a tubular piece-shaped housing ( 4 ) which is designed to surround the tubular body ( 2 ) and has a passage ( 6 ) passing through a peripheral wall of the housing ( 4 ), and the adjusting device ( 1 ) has an adjusting nut ( 9 ) with an internal thread ( 10 ) which is attached to an external thread ( 11 ) of a tubular body ( 2 ), 37 ) of the spring damper device ( 3 ) can be brought into screw engagement, the housing ( 4 ) being designed for releasable abutment against the adjusting nut ( 9 ) and having an inner recess ( 7 ) for forming a pressure chamber ( 8 ) which is in fluid connection with the passage ( 6 ) and the inner recess ( 7 ) forming a pressure wall ( 24 ), the fluid admission of which causes a force acting on the housing ( 4 ) in the axial longitudinal direction and the housing ( 4 ) has an abutment surface ( 54 ) designed for spring force admission by the spring device.