Method of assembling a drum brake device includes positioning a portion of a brake shoe (22) support structure (40, 42) near an opening of a brake actuating cylinder (80); manipulating the support structure (40, 42) so that a window (44) of the support structure (40, 42) is received over a portion of a shoe mount (50); moving the support structure (40, 42) relative to the shoe mount (50) so that the portion of the support structure (40, 42) is received into the brake actuating cylinder (80) and the support structure (40, 42) is engaged by the shoe mount (50) in a manner that the shoe mount (50) restricts movement of the brake shoe (22) in two dimensions and allows selective movement in a third dimension; and securing the brake shoe (22) in an installed position by placing the drum (26) over the brake shoe (22) with the braking surface facing the friction lining.

A brake disc structure contains: a central disc made of metal material or metal alloy material, a first disc and a second disc which are made of ferrous metal materials, and a through orifice passing through central positions of the first disc, the central disc, and the second disc. The first disc includes a first brake face and plural first holes, the second disc includes a second brake and plural second holes, and the central disc includes plural third holes, wherein each of the plural first and second holes has a first diameter and a second diameter less than the first diameter, and diameters of any two adjacent first and second holes are different. Furthermore, multiple heat dissipation portions of the central disc are defined by the plural third holes and the plural first holes or are defined by the plural third holes and the plural second holes.

A modified vehicle-used brake disc composite structure, comprising an inner ring piece made from a lightweight metal and a disc body having a high rigidity, wear-resistance and heat-resistance; the inner surface of the inner ring piece is equally divided and extends to form a plurality of arm-like fixing portions; a ring piece is disposed at the outer edge of the inner ring piece; the two side surfaces of the ring piece respectively form a first engaging surface; the disc body is provided with a plurality of annular-shaped heat-dissipation holes; a second engaging surface is disposed on one side of the disc body; the two side surfaces of the inner ring piece are respectively pressed by the two disc bodies, enabling the second engaging surfaces to be respectively fixed to the first engaging surfaces via friction welding method so as to form the brake disc.

A bicycle disc brake rotor, having a rotational center axis, comprises an outer portion having plural layers including first and second braking surfaces in opposite axial directions. The plural layers include a first layer made of a copper or a copper alloy.

A locking system for a vertical cable shuttle is disclosed. The locking system comprises a housing defining a guide path and slideably attached to a guide member. A braking lever configured to engage the guide member. The braking lever comprises a shock absorber fabricated along the braking lever and configured to absorb shocks during a fall. Further, a braking configured independent from the braking lever. The braking element is a logarithmic spiral structure configured to rotate into engagement with the guide member during the fall, and defines a constant slope angle for gripping of the guide member. The braking element having a braking surface to provide contact surface area with the guide member during the fall.

In a method for producing a brake disc for a motor vehicle, a base disc, which is made of cast iron or aluminum in particular, is provided and equipped with an anti-corrosion layer. The anti-corrosion layer is applied using a wet chemical or galvanic method.

Method of assembling a drum brake device includes positioning a portion of a brake shoe (22) support structure (40, 42) near an opening of a brake actuating cylinder (80); manipulating the support structure (40, 42) so that a window (44) of the support structure (40, 42) is received over a portion of a shoe mount (50); moving the support structure (40, 42) relative to the shoe mount (50) so that the portion of the support structure (40, 42) is received into the brake actuating cylinder (80) and the support structure (40, 42) is engaged by the shoe mount (50) in a manner that the shoe mount (50) restricts movement of the brake shoe (22) in two dimensions and allows selective movement in a third dimension; and securing the brake shoe (22) in an installed position by placing the drum (26) over the brake shoe (22) with the braking surface facing the friction lining.

A bicycle disc brake rotor is provided that has a center rotational axis, and basically includes an outer portion and a cooling fin. The outer portion includes a first braking part defining a first braking surface and a second braking part defining a second braking surface. The first and second braking surfaces face in opposite axial directions. The cooling fin includes an inner portion radially offset from the first and second braking surfaces. The cooling fin further includes an attachment portion extending outwardly from the inner portion and sandwiched between the first and second braking parts. The first and second braking parts are separate and distinct individual parts from each other and from the cooling fin.

A bicycle disc brake rotor having a rotational center axis is provided including an outer portion and an inner portion. The outer portion includes a first member having a first thermal conductivity and a second member having a second thermal conductivity that is higher than the first thermal conductivity. The second member is attached to the first member. The inner portion is disposed radially inwardly from the outer portion with respect to the rotational center axis. The inner portion is a separate member from the first and second members. The inner portion is attached to or contacts the second member of the outer portion.

A bicycle disc brake rotor having a rotational center axis is provided including an outer portion and an inner portion. The outer portion includes a first member having a first thermal conductivity and a second member having a second thermal conductivity that is higher than the first thermal conductivity. The second member is attached to the first member. The inner portion is disposed radially inwardly from the outer portion with respect to the rotational center axis. The inner portion is a separate member from the first and second members. The inner portion is attached to or contacts the second member of the outer portion.