A handlebar stem connection mechanism for connecting a handlebar stem with a front wheel fork comprises a steerer tube connectible with the front wheel fork. Further, a handlebar stem tube connectible with the handlebar stem is provided, the handlebar stem tube surrounding the steerer tube. Using a clamping element arranged between the steerer tube and the handlebar stem tube, the steerer tube is clampingly connected with the handlebar stem tube. For fixing, in particular a screw is provided in the clamping element as the fixing element.

A headset assembly system for a bicycle is provided having a handlebar stem (1), radially fastenable by tightening to a fork tube (2), rotatable by headset bearings (7) with respect to a head tube (3) wherein the headset bearings are fastened (7); a retaining flange (4), radially fastenable by tightening to the fork tube (2); a thrust ring (5), axially movable along the fork tube (2); such that the retaining flange (4) and the thrust ring (5) are configured to contact each other by a ramp (6) which relates a rotation with a movement relative to each other; the thrust ring (5) is arranged such that, when the thrust ring (5) is rotated around the fork tube (2) with the retaining flange (4) fastened to the fork tube (2), the thrust ring (5) moves with respect to the retaining flange (4) pushing the stem (1) against the headset bearings (7).

A bicycle headset includes a fixed member, wherein the headset is fixed onto a headtube of a bicycle via the fixed member. A steerer tube of a fork passes through the headtube and is connected to a fork portion. The fixed member has a first contour including a first guiding section, a second section, and a joint section that connects the first section and the second section and is located at the highest site among the first contour. A rotating member is fixed onto the steerer tube. A movable member is disposed onto the rotating member and is movable along an axial direction of the steerer tube. An elastic member urges the movable member to allow a second contour of the movable member to constantly touch the first contour of the fixed member, thereby preventing a stem connected to the steerer tube from overly turned and assisting to steer back.

A bearing retaining element for bicycle headset bearings includes a basic element which, in a mounted state, at least partly surrounds a steerer tube. The basic element retains a clamping element which also, in the mounted state, at least partly surrounds the steerer tube. Further, a clamping member in particular configured as a grub screw is provided which acts upon the clamping element for clampingly fixing the clamping element to the steerer tube.

A bearing retaining element for bicycle headset bearings includes a basic element which, in a mounted state, at least partly surrounds a steerer tube. The basic element retains a clamping element which also, in the mounted state, at least partly surrounds the steerer tube. Further, a clamping member in particular configured as a grub screw is provided which acts upon the clamping element for clampingly fixing the clamping element to the steerer tube.

A bicycle fork includes a fork shaft configured to be rotatably borne by headset bearings in a head tube of a bicycle frame so as to rotate about a steering axis. The fork shaft includes a cylindrical fork shaft segment that is disposed eccentrically with respect to the steering axis. The cylindrical fork shaft segment is a right circular cylinder having a hollow interior, a cylindrical inner surface and a central longitudinal axis that lies within a symmetry plane of the bicycle frame and extends parallel to the steering axis. The central longitudinal axis of the cylindrical fork shaft segment is spaced apart from the steering axis in a direction of eccentricity that points in an opposite direction with respect to a forward direction of travel of the bicycle.

A bicycle fork includes a fork shaft configured to be rotatably borne by headset bearings in a head tube of a bicycle frame so as to rotate about a steering axis. The fork shaft includes a cylindrical fork shaft segment that is disposed eccentrically with respect to the steering axis. The cylindrical fork shaft segment is a right circular cylinder having a hollow interior, a cylindrical inner surface and a central longitudinal axis that lies within a symmetry plane of the bicycle frame and extends parallel to the steering axis. The central longitudinal axis of the cylindrical fork shaft segment is spaced apart from the steering axis in a direction of eccentricity that points in an opposite direction with respect to a forward direction of travel of the bicycle.

A bicycle rolling-element bearing assembly includes an outer bearing ring, an inner bearing ring, a plurality of rolling elements disposed between the outer bearing ring and the inner bearing ring and rotatably supporting the outer bearing ring relative to the inner bearing ring, and a lubricant reservoir, configured as a first cage, for storing and dispensing a lubricant, the first cage including bridge elements extending between the rolling elements and at least one side ring connecting the bridge elements.

A bicycle rolling-element bearing assembly includes an outer bearing ring, an inner bearing ring, a plurality of rolling elements disposed between the outer bearing ring and the inner bearing ring and rotatably supporting the outer bearing ring relative to the inner bearing ring, and a lubricant reservoir, configured as a first cage, for storing and dispensing a lubricant, the first cage including bridge elements extending between the rolling elements and at least one side ring connecting the bridge elements.

This non-tilting steering system for reverse trikes uses three cross axis helical gear set. Steerer rod at the center, and steerer rod controlling the wheels are connected to cross axis helical gear set. Central gear set as well as gear set on the wheel consist of one vertical helical gear meshingly engaged, on its front and rear side, with two transversely oriented horizontal helical gears. Steerer rod at the center upon rotation via handle rotates coaxial worm gear which in turn rotates pinion helical gears engaged with it. Pinion helical gears at the center then rotates transverse helical gears of the gear set of the steering system at each of the wheels via a transmission shaft which in turn rotates the vertical helical gears attached to steerer rods of the wheels, thus rotating the wheels. This steering system can also be used in a four wheeler.