Abstract: A stem includes a stem body, one of the extremities of which includes element for attaching a handlebar, the opposite extremity including two parallel arms connected to a pivot tube by an articulation associated with clamping element which immobilize the stem in a chosen position. The clamping element includes a pair of frustoconical bodies connected to the extremities of the arms. The frustoconical bodies are received in housings of complementary shape. The frustoconical bodies are connected by a connecting element capable of moving them closer to one another in order to clamp them in the respective housing, and of loosening them by moving them further apart one from the other so as to allow the continuous adjustment of the inclination of the handlebar. The cone angle of the frustoconical bodies possesses a sufficiently low value to permit them to be pinched inside their housings.

Abstract: The device is designed to guide a flexible linking member passing into a bicycle frame to link a control member carried by bicycle handlebars to a receiver. The linking member (14) enters the bicycle frame via an inlet opening (15) formed in a head tube (1). The guide device (3) forms an insert that can be built into the head tube (1) and includes a guide channel (17) for the linking member (14) intended to communicate with the inlet opening (15). The insert (3) can be placed inside the head tube (1) in a seat (4) shared with an upper bearing (2) of a headset and has an internal face that can at least partially surround a fork steerer (6) inserted in the head tube (1), and an external face containing the guide channel (17).

Abstract: The device is designed to guide a flexible linking member passing into a bicycle frame to link a control member carried by bicycle handlebars to a receiver. The linking member (14) enters the bicycle frame via an inlet opening (15) formed in a head tube (1). The guide device (3) forms an insert that can be built into the head tube (1) and includes a guide channel (17) for the linking member (14) intended to communicate with the inlet opening (15). The insert (3) can be placed inside the head tube (1) in a seat (4) shared with an upper bearing (2) of a headset and has an internal face that can at least partially surround a fork steerer (6) inserted in the head tube (1), and an external face containing the guide channel (17).

Abstract: A stem includes a stem body, one of the extremities of which includes element for attaching a handlebar, the opposite extremity including two parallel arms connected to a pivot tube by an articulation associated with clamping element which immobilize the stem in a chosen position. The clamping element includes a pair of frustoconical bodies connected to the extremities of the arms. The frustoconical bodies are received in housings of complementary shape. The frustoconical bodies are connected by a connecting element capable of moving them closer to one another in order to clamp them in the respective housing, and of loosening them by moving them further apart one from the other so as to allow the continuous adjustment of the inclination of the handlebar. The cone angle of the frustoconical bodies possesses a sufficiently low value to permit them to be pinched inside their housings.

Abstract: The bracket includes a bracket body of which the front end ends by a receiving recess that is adapted to the shape of a set of handlebars and that can be closed toward the outside by a tightening yoke that is adapted to the shape of the handlebars. The tightening yoke is connected to the bracket body to tighten the handlebars by a tightening unit. The tightening yoke is formed by a part that is connected in the form of a flexible belt of which a first end is anchored in the bracket body and of which a second end is connected to the tightening unit arranged behind the receiving recess by being capable of pulling the second end close to the first end of the belt forming a tightening yoke in such a way as to adjust the tightening force of the handlebars.

Abstract: The bracket includes a bracket body of which the front end ends by a receiving recess that is adapted to the shape of a set of handlebars and that can be closed toward the outside by a tightening yoke that is adapted to the shape of the handlebars. The tightening yoke is connected to the bracket body to tighten the handlebars by a tightening unit. The tightening yoke is formed by a part that is connected in the form of a flexible belt of which a first end is anchored in the bracket body and of which a second end is connected to the tightening unit arranged behind the receiving recess by being capable of pulling the second end close to the first end of the belt forming a tightening yoke in such a way as to adjust the tightening force of the handlebars.

Abstract: This removable device for running a cable in a cycle frame comprises a body (6) mounted resting on the frame, in an opening made for running the cable and comprising an orifice (19) for running the cable. It also comprises a clamping member (7) mounted by screwing onto the body, the said clamping member being able to be deformed during screwing between a first, undeformed, rest configuration corresponding to a position in which the clamping member is inserted into the opening of the frame and a second, deformed configuration corresponding to a position in which the device is clamped against the frame.

Abstract: The headset includes upper and lower rolling bearings (8, 9) housed inside the head tube so as to allow relative rotation of the steering tube, and clamping elements (18, 21) for axially clamping the lower and upper bearings (8, 9) against, respectively, a lower end and an upper end of the head tube. The axial-clamping elements include a threaded sleeve slipped over the steering tube. This sleeve is secured to the steering tube by connecting elements including a pin extending through two diametrically opposed holes in the threaded sleeve and through two diametrically opposed holes provided in the steering tube. The sleeve collaborates with a tapped annular cap slipped over the steering tube so as to force the upper bearing downward as the annular cap is screwed onto the sleeve.

Abstract: The headset includes upper and lower rolling bearings (8, 9) housed inside the head tube so as to allow relative rotation of the steering tube, and clamping elements (18, 21) for axially clamping the lower and upper bearings (8, 9) against, respectively, a lower end and an upper end of the head tube. The axial-clamping elements include a threaded sleeve slipped over the steering tube. This sleeve is secured to the steering tube by connecting elements including a pin extending through two diametrically opposed holes in the threaded sleeve and through two diametrically opposed holes provided in the steering tube. The sleeve collaborates with a tapped annular cap slipped over the steering tube so as to force the upper bearing downward as the annular cap is screwed onto the sleeve.

Abstract: The chain transmission includes a crank connected to a second crank by an axle of the chain transmission while forming one piece of a single support. The chain transmission axle is housed in a chain transmission tube with the interposition of two bearings arranged around the axle of the chain transmission near the ends of the latter in order to allow rotation of the chain transmission axle in the chain transmission tube. A large chain drive sprocket wheel is located near one of the ends of the chain transmission axle and rotates concomitantly with the latter. The cranks and the chain transmission axle are made of a composite material or a hollow lightweight alloy. A first and second intermediate bushing made of an abrasion-resistant material are attached to the chain transmission axle near one respective end of the latter to receive a respective bearing.