Abstract: A stepless adjustable seat post assembly comprises: a post provided at its an end with a passage, an annular inclined surface is formed at either end of the passage, on the annular inclined surface is formed an annular shoulder; two elastic members disposed at the annular shoulder of the post; two clamping members each includes an annular abutting surface and a press surface, and the two clamping members are disposed at both ends of the passage of the post; and an adjustment assembly is inserted through the two clamping members, the two elastic members, and the passage of the post. By adjusting the adjustment assembly, the two clamping will be caused to clamp or not to clamp the post.

Abstract: The present invention relates to a non-metal joint structure for a bicycle seat post comprising a fixing seat for retaining a bicycle seat, beneath the fixing seat formed a connecting portion for insertion into the seat post, and an axial through hole formed in the fixing seat; wherein the fixing seat of the joint structure is integrally formed with the connecting portion by means of molding, the fixing seat and the connecting portion are made of non-metal composite material. The weight of the joint structure of the present invention can be reduced effectively, and the defect of inconsistency in appearance of the conventional joint structure can be eliminated.

Abstract: Bicycle brake shoes are provided for a bicycle braking device. The brake shoes are pressed into contact with a bicycle wheel rim to apply a braking force thereto. The brake shoes are coupled to the bicycle braking device by brake shoe holders. Each brake shoe includes an attachment portion coupled to the brake shoe holder and a rim contacting portion for contacting the side braking surface of the rim. The brake shoes are formed from a polymer that is obtained by cross-linking rubber with sulfur. The brake shoe is elongated in the rotation direction of the wheel rim and has a braking surface opposite to the braked surface of the rim.

Abstract: A disc brake pad comprises: a support board coated at a side surface thereof with epoxy resin, and a friction member is press formed out of a compound of alumina, Kevlar, graphite and resin and then affixed to side surface of the support board by hot pressing, so that the epoxy resin will be melted and polymerized to combine the support board with the friction member as a whole, whereby the disc brake pad does not excessively wear the disc rotor during deceleration and stopping of the disc rotor while maintaining good performance in wet conditions.

Abstract: Bicycle brake shoes are provided for a bicycle braking device. The brake shoes are pressed into contact with a bicycle wheel rim to apply a braking force thereto. The brake shoes are coupled to the bicycle braking device by brake shoe holders. Each brake shoe includes an attachment portion coupled to the brake shoe holder and a rim contacting portion for contacting the side braking surface of the rim. The brake shoes are formed from a polymer that is obtained by cross-linking SBR with peroxide of adhesive or sulfur. The brake shoe is elongated in the rotation direction of the wheel rim and has a braking surface opposite to the braked surface of the rim.

Abstract: Bicycle brake shoes are provided for a bicycle braking device. The brake shoes are pressed into contact with a bicycle wheel rim to apply a braking force thereto. The brake shoes are coupled to the bicycle braking device by brake shoe holders. Each brake shoe includes an attachment portion coupled to the brake shoe holder and a rim contacting portion for contacting the side braking surface of the rim. The brake shoes are formed from a polymer that is obtained by cross-linking Nitrile Buna Rubber, Styrene-butadiene rubber with sulfur. The brake shoe is elongated in the rotation direction of the wheel rim and has a braking surface opposite to the braked surface of the rim.