The invention relates to a wheel for a powered two-wheeler, in particular a motorcycle or a motor scooter, that is at least sectionally made of a fiber-reinforced plastic material. A hub area (12) of the wheel (IO) is provided with two rigid, self-supporting, metal inserts (18, 20), which are arranged on axially opposite sides of the hub area (12), and which in an axial and radial direction (A, r) are connected to one another in a form-fit manner.

A wheel assembly for an agricultural implement and method of forming the agricultural wheel assembly includes a tire body, an annular ring, and a hub. The tire body has an inner wall and an outer wall collectively defining an annular pocket therebetween. The inner wall defines a central, axial hole through the tire body and has a circumferential slot extending therethrough. The annular ring is positioned within the circumferential slot and secured to the tire body such that the annular ring projects radially inward through the circumferential slot to the axial hole. As such, the annular ring is configured to operatively engage the hub such that the tire body mounts to the hub.

A bicycle disc wheel or spoked wheel (10) is disclosed, comprising a hub (12), a rim (14) and at least one disc or spoke-type structural element (60) integral with the hub (12) and the rim (14), wherein said at least one structural element (60) is pretensioned. A process for manufacturing thereof comprises the sequential steps of providing a hub (12) and a rim (14), applying a compression on the rim (14) towards the hub (12) elastically deforming it, rendering at least one disc or spoke-type structural element (60) integral with the hub (12) and the rim (14), and removing the compression onto the rim (14) applied in step a).

In a step of forming a fixing groove for a wheel disk (20), an inner circumferential end of a first hub hole peripheral portion (41) is squeezed by a protruding portion (D21) of a back die (D2) and a dent portion (D31) of a front die (D3). In this manner, a fixing groove (50) is formed in a back surface of the first hub hole peripheral portion (41). Along with this, an excess material is pushed into the dent portion (D31) so that a protrusion (51) is formed on a front surface of the first hub hole peripheral portion (41). Thus, without requiring a step of cutting the excess material, the fixing groove (50) can be formed in a back surface of a hub hole peripheral portion (30).

In a step of forming a fixing groove for a wheel disk (20), an inner circumferential end of a first hub hole peripheral portion (41) is squeezed by a protruding portion (D21) of a back die (D2) and a dent portion (D31) of a front die (D3). In this manner, a fixing groove (50) is formed in a back surface of the first hub hole peripheral portion (41). Along with this, an excess material is pushed into the dent portion (D31) so that a protrusion (51) is formed on a front surface of the first hub hole peripheral portion (41). Thus, without requiring a step of cutting the excess material, the fixing groove (50) can be formed in a back surface of a hub hole peripheral portion (30).

A bicycle disc or spider wheel including: a hub; a rim having a radially outer tire-coupling region, a first sidewall, a second sidewall; an axis of rotation; and a median plane. A pair of pretensioned disc or spider wheel-type structural elements are integral with the hub and with the rim. The first sidewall extends on a first side of the wheel, with respect to the median plane, on which a component of a motion transmission system or, when there is none, a disc of a disc brake is provided at the hub, and the second sidewall extends on the opposite side, with respect to the median plane. The first sidewall of the rim has a minimum distance from the median plane that is smaller than that of the second sidewall of the rim.

A nut, or a washer for a nut, in particular a wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, having an abutment face at a lower side, wherein the nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by means of a tool which cooperates with the wrench faces. In order to be able to detect the loosening of wheel nuts or axle nuts of vehicles, and to indicate such loosening to a vehicle driver to avoid dangerous situations during driving, there is provided in the body at least one recess in which a sensor element is arranged, wherein the sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.

A nut, or a washer for a nut, in particular a wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, having an abutment face at a lower side, wherein the nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by means of a tool which cooperates with the wrench faces. In order to be able to detect the loosening of wheel nuts or axle nuts of vehicles, and to indicate such loosening to a vehicle driver to avoid dangerous situations during driving, there is provided in the body at least one recess in which a sensor element is arranged, wherein the sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.

Mechanisms are disclosed for releasably attaching a wheel to a vehicle in a position where the wheel supports a weight of the vehicle. An illustrative quick connect system is described to include a wheel, a vehicle frame, and a coupling system that releasably attaches the wheel to the vehicle frame. The coupling system, when in a coupled state, may substantially prevent or oppose rotation between a wheel core and the vehicle frame.

Mechanisms are disclosed for releasably attaching a wheel to a vehicle in a position where the wheel supports a weight of the vehicle. An illustrative quick connect system is described to include a wheel, a vehicle frame, and a coupling system that releasably attaches the wheel to the vehicle frame. The coupling system, when in a coupled state, may substantially prevent or oppose rotation between a wheel core and the vehicle frame.