Abstract: There is provided a production method for a stainless steel containing member, including the steps of: blasting a surface of a hollow starting member having a long side direction and a short side direction, the surface being composed of stainless steel; and electropolishing the surface having been blasted, in the step of electropolishing, the starting member being immersed in an electropolishing solution with the long side direction of the starting member being inclined relative to a horizontal direction.

Abstract: There is provided a production method for a stainless steel containing member, including the steps of: blasting a surface of a hollow galling member having a long side direction and a short side direction, the surface being composed of stainless steel; and electropolishing the surface having been blasted, in the step of electropolishing, the starting member being immersed in an electropolishing solution with the long side direction of the starting member being inclined relative to a horizontal direction.

Abstract: A hub for a wheel wherein a buffer mechanism is inside the hub barrel to reduce shock caused by a difference in level and thus enhance comfort and durability, and the left and right lateral torsion in the direction of an axle of a wheel is eliminated to improve safety, this hub for a wheel (10) includes a mechanism wherein the hub barrel (11) has an axle (21) therein, a rotator (26) for rotating and supporting the axle (21) is made to buffer (40) independently of rotation of the axle (21), the buffer (40) rotatably engages the rotator (26) of the hub barrel (11) by a link mechanism (30), and has a frame shaft (20) for engaging and supporting the vehicle frame (19).

Abstract: A hub for a wheel having a buffer mechanism internally of a hub barrel, in which the great shock caused by a difference in level is relieved to enhance the comfort to ride and the durability, and the left and right lateral torsion in the direction of an axle of a wheel is eliminated to improve the safety

Abstract: A bicycle spoke rim wheel for a WO type tubeless tire is disclosed having a rim construction which can secure an airtightness, reduce a weight of the wheel, and easily fit a tire. Particularly, a seal material within a recess can be reduced in weight, and mounting of a tire bead on the rim is facilitated by placing the tire bead into the recess.

Abstract: The present invention is a process for manufacturing a bicycle and an apparatus for inserting a spoke into a spoke hole of a flange of a hub from a spoke ejection apparatus that is arranged to face the spoke hole and eject the spoke by air under pressure.

Abstract: The present invention constitutes a construction joint of a bicycle frame comprising a rear dropout body having projecting portions decreasing in taper as they extend away from the body, each projecting portion defining an elongated screw hole extending along a longitudinal axis of the projecting portion, the projecting portion defining a slit extending on both sides of the screw hole; chainstay and seat stay pipes, each surrounding a projecting portion, the chainstay and seat stay pipes having gradually decreasing diameters towards the base end of the projecting portions; a screw or wedge inserted into the screw hole to enlarge the outside circumference of the projecting portion until it fixedly contacts the interior of the chainstay and seat stay pipes; and an adhesive agent spread around the projecting portion of the rear dropout body and inside the chainstay and seat stay pipes.

Abstract: A bicycle frame of the present invention is formed as follows.First, the worker puts and bonds a pipe made by fibre reinforced plastics around a cylindrical projecting part of a lug made by thin wall thickness light alloy.Next, the worker covers a joining part of the said projecting part of a lug and pipe made by fibrer reinforced plastics by sheet molding compound, (hereinafter it is called "SMC").Last, the joining part of the projecting part of a lug and the pipe covered by said SMC is put in a molds for compression molding.As the SMC consists of required quantity of plastics and chopped fibre same as filament comprised in the pipe made by fibre reinforced plastics, bonding of the pipe made by fibre reinforced plastics and said SMC is very good. Consequently, the joining strength of the pipe and lug is very strong in the present invention.

Abstract: A method for automatically assembling a wheel for a bicycle comprising:aligning spokes mounted on a hub;leasing the aligned spokes to form an assembly;transferring the assembly of hub and leased spokes to a device for loosely tightening said leased spokes;loosely tightening the spokes of the assembly of the hub and leased spokes; andfastening the loosely tightened spokes to complete the tightening of the loosely tightened spokes. In the aligning of the spokes the spaces between spokes are precisely retained. The leasing is carried out by a single touch operation. In transferring the assembly of hub and leased spokes to a temporary tightening device the assembled is maintained in its pretransfer position. Due to the temporarily tightening of the spokes, the final fastening may precisely tension the spokes between the hub and the rim.

Abstract: A detachable shoulder pad for a bicycle covering a portion of the top and seat tubes of the bicycle frame comprising two identical outer sheets interconnected by a belt-like strap, a sponge sheet having recessed grooves in a longitudinal direction and having a width less than the width of the outer sheet, fixed to each outer sheet in a longitudinal direction only at central portions thereof and engageable members attached to opposite surfaces of projections of the outer sheet extending beyond the sponge sheet.