A wheel and a rim with a weight reduction inner flange are provided. The rim includes an inner flange, a middle portion and an outer flange which are all annular and connected end to end to form an annular rim, in which the inner flange or the outer flange includes multiple groups of edge weight reduction sockets arranged side by side on one side of the inner cavity of a hub, and multiple groups of inner weight reduction sockets arranged side by side are provided inside the edge weight reduction sockets on the rim; a group of edge weight reduction sockets includes a first edge weight reduction socket and a second edge weight reduction socket at the edge of the inner flange or the outer flange, and the first edge weight reduction socket is in the shape of a right-angled triangle having round angles.

An aerodynamically optimized drag-reduction means and method for optimal minimization of the drag-induced resistive forces upon a terrestrial vehicle wheel, where the drag-induced resistive moments on wheel surfaces pivoting about the point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced. The drag reduction means includes: a streamlined wheel cover positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; a streamlined wind-deflecting fairing positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; an engine exhaust pipe disposed on a vehicle whereby exhaust gases deflect headwinds to shield the faster moving upper wheel surfaces of an automotive wheel; an automotive spoked wheel having streamlined oval-shaped wheel spokes arranged in one or more rows for greater axial strength; a streamlined tailfin rotatably attached to a wheel spoke, which thereby may pivot about the spoke in response to varying crosswinds; and a tire having streamlined tread blocks arranged in an aerodynamic pattern.

A wheeled luggage case comprises (a) a storage chamber, (b) a cover defining an opening on at least one side of the storage chamber for providing ready access therein and at least two labyrinth axle-free wheels operatively connected to the chamber for towing the case along a ground surface. The labyrinth axle-free wheel comprises an internal rim, an external rim provided with a ground interface, rollers being rotatably disposed within a roller spacer between the internal and external rims in a uniform circumferential manner by means of a spacer and external covers. A labyrinth type dust passage in the wheel is defined by the rims and the external plates mechanically connected to the internal rim.

An apertured article, insertion article and associated systems. The apertured article having an aperture, which has an aperture periphery, the aperture periphery having an aperture inner periphery and spaced aperture protrusions that extend radially outwardly from the aperture inner periphery to an aperture outer periphery. The aperture outer periphery is defined by distal edges of the spaced aperture protrusions. The aperture inner periphery is positioned along the circumference of an inner aperture reference circle, the inner aperture reference circle inscribing the aperture periphery, and the aperture outer periphery is positioned along the circumference of an outer aperture reference circle. As viewed along a radial line whose origin is at the center of the inner aperture reference circle, the aperture inner periphery can be positioned along 0.4 to 0.6 of the entire circumference of the inner aperture reference circle. The insertion article can be configured for insertion in the apertured article.

An electrical passenger car, the electrical passenger car including: at least two electrically driven motors; motor control electronics, where the motor control electronics are connected to the at least two electrically driven motors; wheels, where the wheels are connected to the at least two electrically driven motors; and sensors, where the sensors are connected to at least the motor control electronics, where the wheels include a first wheel and a second wheel, where the second wheel has a radius at least 7% greater than a radius of the first wheel, where the motor control electronics control the at least two electrically driven motors to provide a greater torque to the first wheel than to the second wheel, and where the electrical passenger car is designed to operate efficiently on a paved road.

A wheel disc including a hub located centrally within the wheel disc and defining a wheel axis. The hub has a plurality of bolt holes formed therein. The wheel disc further including an outer circumferential edge and a transition portion radially extending between the hub and the outer circumferential edge. The transition portion has a plurality of vent holes formed therein. The transition portion has a front surface and a rear surface defining a thickness therebetween such that the thickness of the transition portion varies in the radial direction.

A wheel disc includes a hub located centrally within the wheel disc and defining a wheel axis. The wheel disc further includes an outer circumferential edge and a transition portion radially extending between the hub and the outer circumferential edge. The transition portion has a front surface and a rear surface such that the front surface has a relatively smooth profile and the rear surface has a plurality of concentric ring-shaped curvatures formed therein, thereby providing the transition portion with a variable thickness between the front and rear surfaces.

A wheel disc including a hub located centrally within the wheel disc and defining a wheel axis. The wheel disc further including an outer circumferential edge and a transition portion radially extending between the hub and the outer circumferential edge. The transition portion has a front surface and a rear surface such that the front surface has a plurality of concentric ring-shaped first curvatures formed therein, and wherein the rear surface has a plurality of concentric ring-shaped second curvatures formed therein, thereby providing the transition portion with a variable thickness between the front and rear surfaces.

A full face fabricated vehicle wheel having a wheel attached to a wheel disc. The wheel disc includes a hub located centrally within the wheel disc and defining a wheel axis. The wheel disc further includes an outer circumferential edge having an outboard bead seat retaining flange, and an annular transition portion radially extending between the hub and the outer circumferential edge. The transition portion includes a plurality of vent hole regions circumferentially spaced around the transition portion about the wheel axis. At least one vent hole region includes a vent hole formed through the transition portion and defining an outer perimeter such that at least two bridging portions extend inwardly from the perimeter which subdivides the vent hole into at least three smaller holes formed through the transition portion at the at least one vent hole region.

A wheel disc includes a hub located centrally within the wheel disc and defining a wheel axis. The wheel disc further includes an outer circumferential edge and a transition portion radially extending between the hub and the outer circumferential edge. The transition portion has a front surface and a rear surface such that the rear surface has a relatively smooth profile and the front surface has a plurality of concentric ring-shaped curvatures formed therein, thereby providing the transition portion with a variable thickness between the front and rear surfaces.