A method for manufacturing a vehicle steering wheel, the steering wheel comprising: —a rim, —an outer sheath formed by at least one strip attached around at least one part of the rim, —at least one device passing through the outer sheath, the method comprising at least the following steps: —positioning the strip around the rim, —attaching the strip to the rim in order to form the outer sheath, —forming an opening in the outer sheath facing an internal part of the device, —folding portions of the outer sheath towards the inside of the rim.

An idler wheel for a tracked machine can comprise a cylindrical hub defining a central axis, an annular tread disposed concentrically about the cylindrical hub, a pair of side plates connecting the cylindrical hub and the annular tread, and a webbing connecting the cylindrical hub and the annular tread between the pair of side plates. A method for manufacturing an idler wheel comprises assembling a cylindrical hub, an annular tread, first and second side plates and at least one web.

A method for manufacturing a vehicle steering wheel, the steering wheel comprising: —a rim, —an outer sheath formed by at least one strip attached around at least one part of the rim, —at least one device passing through the outer sheath, the method comprising at least the following steps: —positioning the strip around the rim, —attaching the strip to the rim in order to form the outer sheath, —forming an opening in the outer sheath facing an internal part of the device, —folding portions of the outer sheath towards the inside of the rim.

A vehicle steering wheel according to a method of manufacture, the steering wheel comprising: a rim, an outer sheath formed by at least one strip attached around at least one part of the rim, at least one device passing through the outer sheath, the method comprising at least the following steps: positioning the strip around the rim, attaching the strip to the rim in order to form the outer sheath, forming an opening in the outer sheath facing an internal part of the device, folding portions of the outer sheath towards the inside of the rim.

A vehicle steering wheel according to a method of manufacture, the steering wheel comprising: a rim, an outer sheath formed by at least one strip attached around at least one part of the rim, at least one device passing through the outer sheath, the method comprising at least the following steps: positioning the strip around the rim, attaching the strip to the rim in order to form the outer sheath, forming an opening in the outer sheath facing an internal part of the device, folding portions of the outer sheath towards the inside of the rim.

A manufacturing apparatus for a drive disk includes: an upper member and a lower member each including a base and protrusions. Each protrusion is defined by a plurality of surfaces including a first side surface inclined with respect to opposed surfaces of the drive disk and a second side surface parallel to the opposed surfaces. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member are parallel to each other and face away from each other. The second side surface of the protrusion of the upper member and the second side surface of the protrusion of the lower member face away from each other. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member come into contact with each other to form the slot.

A manufacturing apparatus for a drive disk includes: an upper member and a lower member each including a base and protrusions. Each protrusion is defined by a plurality of surfaces including a first side surface inclined with respect to opposed surfaces of the drive disk and a second side surface parallel to the opposed surfaces. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member are parallel to each other and face away from each other. The second side surface of the protrusion of the upper member and the second side surface of the protrusion of the lower member face away from each other. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member come into contact with each other to form the slot.

A forging apparatus and a forged product manufacturing method aim to prevent decrease in the temperature of a forging space and the temperature of a forging material, efficiently maintain the uniformity of the temperatures of upper and lower dies, and improve forging efficiency. In the forging apparatus and the forged product manufacturing method according to the present invention, the upper and lower dies are heated by a heating mechanism in a housing in which a charging port of an integrally formed housing body is closed by a door, the upper and lower dies are moved relatively in a facing direction of the upper and lower dies, the heating mechanism is moved relatively in the facing direction with respect to at least one of the relatively moving upper and lower dies, and whereby the forging material is forged between the upper and lower dies. Furthermore, the forged product manufacturing method is used to manufacture a forged product from the forging material.

A forging apparatus and a forged product manufacturing method aim to prevent decrease in the temperature of a forging space and the temperature of a forging material, efficiently maintain the uniformity of the temperatures of upper and lower dies, and improve forging efficiency. In the forging apparatus and the forged product manufacturing method according to the present invention, the upper and lower dies are heated by a heating mechanism in a housing in which a charging port of an integrally formed housing body is closed by a door, the upper and lower dies are moved relatively in a facing direction of the upper and lower dies, the heating mechanism is moved relatively in the facing direction with respect to at least one of the relatively moving upper and lower dies, and whereby the forging material is forged between the upper and lower dies. Furthermore, the forged product manufacturing method is used to manufacture a forged product from the forging material.

A flywheel energy storage system incorporates various embodiments in design and processing to achieve a very high ratio of energy stored per unit cost. The system uses a high-strength steel rotor rotating in a vacuum envelope. The rotor has a geometry that ensures high yield strength throughout its cross-section using various low-cost quenched and tempered alloy steels. Low-cost is also achieved by forging the rotor in a single piece with integral shafts. A high energy density is achieved with adequate safety margins through a pre-conditioning treatment. The bearing and suspension system utilizes an electromagnet that off-loads the rotor allowing for the use of low-cost, conventional rolling contact bearings over an operating lifetime of several years.