Provided is a tire including rims, beads each mounted so as to surround each of the rims, a side wall that is connected to the beads, a sub-tread that is formed on top of the side wall and is formed of a material having elasticity so as to have a changing curvature, and plural tread blocks that are arranged on the sub-tread such that the distances between the tread blocks change in accordance with the change in the curvature of the sub-tread.

A wheel rim for a vehicle including a first rim portion including a first wheel flange, a second rim portion threadedly connected to the first rim portion, and a second wheel flange held on the first rim portion.

A road wheel for a tracked vehicle includes a first rim half and a second rim half operatively connected to the first rim half. The first rim half includes at least a first portion that is angled away from the second rim half. The second rim half includes at least a first portion that is angled away from the first rim half. A hollow cavity is formed between the first portion of the first rim half and the first portion of the second rim half.

A two-piece rim and tire assembly. The tire is held to the rim by fasteners extending through flanges integral with the tire main body and then into the rim. Further, the outer edges of the rim clinchably mount the tire main body thereto. A flexible overhanging portion extends outwardly of the tire main body minimizing dirt and mud accumulation on the tire and rim. A bearing is held within the rim by a ring.

Embodiments of collapsible wheels and methods of making collapsible wheels are generally described herein. Other embodiments may be described and claimed.

Embodiments of collapsible wheels and methods of making collapsible wheels are generally described herein. Other embodiments may be described and claimed.

In an aspect, there is provided a wheel for a human-powered vehicle, comprising a wheel hub (6) rotatably mountable on a central axle (5) defining a wheel rotation axis, a first cover (1) secured to the wheel hub, a circumferential rim (1c) structured to fully support a tyre (4) thereon, and a second cover (2) secured to one of the wheel hub and the first cover adjacent the wheel hub, and mating with the first cover distal from the wheel hub.

A two-piece wheel may have a first section and a second section. The wheel has areas of varying diameter across its width, and the first second and the second section are joined at the area of the wheel with the smallest diameter. The first section can be a spoke section with spokes extending from the central hub and the second section can be a barrel section.

Systems and apparatus for an oval O-ring groove for aircraft wheels may generally comprise an inboard wheel portion and an inboard O-ring groove. The inboard wheel portion may include an inboard rim located opposite of an inboard tubewell. The inboard tubewell may have an inboard mating surface located on an axially outward edge of the inboard tubewell. The inboard O-ring groove may be formed as a partial oval-shaped recess located on an outer edge of the inboard mating surface.

A bolt together wheel assembly with deflation system includes an inner wheel half, an outer wheel half, a bolt cover ring, and a removable valve stem. Clamping bolts and clamping nuts secure the outer wheel half to the inner wheel half. Venting port plugs secure the bolt cover ring to the outer wheel half over the clamping bolts. Loosening one or more of the venting port plugs to access the clamping bolts opens a seal to a vent port within the inner wheel half and releases pressurized air from a tire on the wheel, ensuring that the tire is deflated before the wheel can be disassembled.