Abstract:
A bicycle frame assembly comprises a main frame formed of a plurality of tubular bodies, a front fork, and a handlebar. The tubular bodies of the main frame, the front fork and the handlebar are partially or entirely covered with a wooden layer formed of a wood or bamboo film. The wooden layer is covered with a protective layer of a glass fiber material preimpregnated with epoxy resin.
Abstract:
The stick has a shaft (12) having a longitudinal axis and a strike surface (14) located on one end of the shaft. The shaft is formed by a housing which is covered in a wooden lamina. A fibre-reinforced layer may also be used to cover a certain region of the stick.
Abstract:
A weighting device for use with a racket includes at least one frame strip, at least one weight, and at least one screw. The frame strip is adapted for being mounted on an outer circumference of a racket frame and has a dovetail groove extending along a longitudinal direction thereof, and a plurality of through holes provided at a bottom wall of the dovetail groove. The weight has a threaded through hole and is slidably engaged in the dovetail groove. The screw is threadedly engaged with the threaded through hole of the weight and provided with an end stoppable against the bottom wall of the dovetail groove for holding the weight stationarily. Therefore, the weight can be firmly positioned and the balance of a racket using the weighting device can be quickly adjusted by adjusting the position of the weight.
Abstract:
A process of making a base of a shock-absorbing front fork for a bicycle, includes the steps of winding pre-pregs around an upper section of each of two cured straight tubes to form a bridge having a foamed core therein, and placing the two straight tubes and the bridge in a mold and heating the mold for curing the bridge such that the bridge and the straight tubes are connected integrally.
Abstract:
A front fork for a bicycle includes an upright tube, a fork crown and two branch tubes. The upright tube is mounted on a bottom end of the upright tube. The branch tubes each have a top connected to the fork crown, and a rib located inside an upper section thereof. Thus, the upper sections of the branch tubes have well structural rigidity for increasing the transmission efficiency of the bicycle. The lower sections of the branch tubes have well flexibility for enhancing the rider's riding comfort.
Abstract:
A rear frame for a bicycle is disclosed to include two tubes and a connecting portion. The tubes are respectively made of fiber reinforced material and have at least one rib therein. The connecting portion is connected between the tubes. By means of the aforesaid arrangement, the rear frame has a high mechanical strength and light weight.
Abstract:
A seat tube for a bicycle includes an upright tube, a head and an inner tube all of which are made of fiber reinforced material. The upright tube has an inserting portion at a top thereof. The head has an inside chamber and a sleeve portion at a bottom thereof. The sleeve portion of the head is sleeved onto the inserting portion of the upright tube such that the inside chamber of the head is communicated with an inside of the upright tube. An outer wall of the inserting portion of the upright tube is a taper face converging upward. The inner tube is disposed at a junction of the upright tube and the head and interconnected with the upright tube and the head. Thus, the seat tube has strong structure with light weight.
Abstract:
A billiard cue has a main body formed of one or more segments which are connected end to end. At least one segment consists of an outer casing which is made of a fiber-reinforced plastic material and is covered with a wooden sheath and a protective layer. The billiard cue is not prone to deformation and is provided with appearance of a wood texture.