An agricultural tool includes a wheel body and a flexible tire with a hollow chamber and an inner surface around this hollow chamber; a circular opening on the chamber; a pair of beads bordering this opening; and a spacer at least partially tubular with two axially opposite end faces. Over one portion corresponding to one of the beads, the inner surface extends frustoconically by widening radially outward of the flexible tire, and one of the end faces of the spacer has an axially protruding surface. The spacer is placed across the opening of the tire such that the protruding surface engages the inner surface in an area of the portion corresponding to the bead.

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 hubless wheel with an improved structure includes a fixed wheel (110), a rotating wheel (120) disposed outside the fixed wheel (110), and a bearing (130) disposed between the fixed wheel (110) and the rotating wheel (120) and having an inner ring (131) and an outer ring (132). An inner ring seating surface (111a) and an inner ring contact surface (111b) perpendicular thereto are provided on the fixed wheel (110), and an outer ring seating surface (121a) and an outer ring contact surface (121b) perpendicular thereto are provided on the rotating wheel (120).

A wheel hub for receiving a vehicle wheel, the wheel hub having a central region with a central opening. In order to achieve a reduction of the forces acting on wheel screws, it is provided that (i) the wheel hub includes at least four screw-in openings for screwing in a respective wheel screw; (ii) the wheel hub includes a number of stiffening ribs corresponding to the number of screw-in openings, which ribs extend obliquely or radially outward; (iii) in each case, two circumferentially adjacent stiffening ribs are connected to one another by a linearly extending connecting web, wherein the connecting web between the stiffening ribs has no connection to the central region; and (iv) a screw-in opening is arranged in each connecting web.

A wheel with flexible spokes, including a rim and hub, and spokes between the rim and hub made of fibrous material that causes the spokes to be both lighter in weight and stronger than comparable steel spokes. The spokes are also flexible and resilient such that they can bend while retaining their integrity and strength.

A vehicle wheel including a disc segment and a rim segment. The disc segment includes a wheel mounting surface for connecting the vehicle wheel to a vehicle hub and a transition element, wherein the transition element is arranged between the wheel mounting surface and an outer rim flange. The rim segment includes the outer rim flange and an inner rim flange as well as a drop center arranged between the two flanges. The segments of the vehicle wheel are integrally formed in order to shape a one-piece, continuously running vehicle wheel contour profile.

A wheel assembly includes a wheel, and an insert that is inserted into the wheel. In particular, the insert includes: an outer area defining a side of the insert in a radially outward direction, wherein the radially outward direction is defined as a direction in which a center of the wheel faces an outer peripheral surface of the wheel; and an inner area extending from the outer area in a radially inward direction opposite to the radially outward direction, and configured to define a side of the insert in the radially inward direction. The wheel includes: an insertion area configured such that the outer area is inserted thereinto; and a cover area extending from the insertion area in the radially inward direction and configured to surround a portion of the inner area.

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 patient transport apparatus comprises a support structure and at least one caster assembly coupled to the structure to facilitate movement of the structure along a floor. Each caster assembly comprises a wheel, an actuator moveable between three actuator positions, a steer lock assembly moveable by the actuator between a steer and non-steer locked state, and a brake assembly movable by the actuator between a braked and unbraked state. The brake assembly includes a plunger, a retainer coupled to the plunger, a brake pad for sliding movement along the retainer, and a brake biasing element disposed between the plunger and the brake pad to urge the brake pad away from the plunger such that movement of the actuator to place the brake assembly in the braked state simultaneously brings the brake pad into engagement with the wheel and slides the brake pad along the retainer to compress the biasing element.

A method for making a bicycle rim, having a rim body with at least one integrated cavity . The cavity is enclosed by a component wall. The rim body extends in a rim plane over 360 transverse to its rotational axis.

The cavity forms a chamber in the rim body. A plurality of component walls have two lateral rim flanks, a radial inner rim base and a radial outer rim well, which limit the chamber. A rim body support structure is formed by a fibre structure. A fibre bundle is attached to a carrier layer and passed reciprocally on the carrier layer to form a basic fibre layer of the fibre structure. The fibre structure is draped in a tool mould. A filling unit is placed in the tool mould so that the filling unit keeps the volume free for the cavity and the cavity is surrounded by the component wall.