Provided is a non-pneumatic tire including an attachment body attached to an axle, an outer tubular body (13) configured to surround the attachment body from the outside in a tire radial direction, and a connecting member (15) configured to connect the attachment body and the outer tubular body while allowing displacement therebetween, wherein the connecting member includes a first elastic connecting plate (21) in which a first end portion (21a) connected to the outer tubular body is disposed closer to a first side in a tire circumferential direction than a second end portion connected to the attachment body and an intermediate portion (21c) is disposed between the first end portion and the second end portion, and both of circumferential end surface (26a, 26b) directed in the tire circumferential direction among surfaces of the first end portion of the first elastic connecting plate extend in opposite directions in the tire circumferential direction to be separated from each other from the inside toward the outside in the tire radial direction.

Provided is a non-pneumatic tire including an attachment body attached to an axle, an outer tubular body (13) configured to surround the attachment body from the outside in a tire radial direction, and a connecting member (15) configured to connect the attachment body and the outer tubular body while allowing displacement therebetween, wherein the connecting member includes a first elastic connecting plate (21) in which a first end portion (21a) connected to the outer tubular body is disposed closer to a first side in a tire circumferential direction than a second end portion connected to the attachment body and an intermediate portion (21c) is disposed between the first end portion and the second end portion, and both of circumferential end surface (26a, 26b) directed in the tire circumferential direction among surfaces of the first end portion of the first elastic connecting plate extend in opposite directions in the tire circumferential direction to be separated from each other from the inside toward the outside in the tire radial direction.

Provided are tractor wheels for a downhole tractor. An example tractor wheel comprises a series of continuous springs disposed on the circumference of the tractor wheel, wherein the individual continuous springs in the series of continuous springs are separated by a gap, and a void disposed on the interior of the tractor wheel and that is continuous about the circumference of the tractor wheel.

A non-pneumatic tire is described that includes a ground contacting annular tread portion, a shear band, wherein the shear band is formed of a first and second inextensible layer, and a low modulus material positioned between the first and second inextensible layer. The non-pneumatic tire further includes a connecting web positioned between a hub and the shear band, wherein the connecting web is formed of one or more spokes extending from an inner ring to an outer ring, wherein the one or more spokes are formed from a material reinforced with a three dimensional spacer structure.

An airless tire includes an inner wheel including flanges having fin fastening holes, an outer wheel receiving the inner wheel and including a tread part molded into the outer surface of a drum with at least one of through holes and irregularities to be united with the drum, with the inner periphery of the tread part embedded in the through holes or irregularities, a middle wheel including elastomers, a peripheral part having fin fastening holes and formed on the inner periphery of the elastomers, and ribs in the middle of the elastomers, a fixing device attaching the inside of the outer wheel to the outside of the middle wheel and then detachably uniting the middle wheel and the outer wheel, and coupling fins that allow the inner wheel and the middle wheel to be detachably held together by being inserted through the fin fastening holes and the fin fastening holes.

The disclosed technology generally relates to a tire, and more particularly to a non-pneumatic tire that has handling performance similar to a pneumatic tire, supports the load of a vehicle and improves riding comfort by employing a parametric structure. In one aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that functions as a structural support between the rim and the tread, in which the spoke unit is formed by circularly arranging spokes. The spokes have a single closed-loop longitudinal cross-section circumscribed to the rim and around the center of the tire.

The disclosed technology generally relates to a tire and more particularly to a non-pneumatic tire. The non-pneumatic tire that has maneuverability similar to a pneumatic tire even without using air pressure, and can support the load of a vehicle and can guide performance-oriented tire deformation behavior by using a meta structure. In an aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that serves as a structural support between the rim and the tread, in which the spoke unit is formed in a meta structure in which unit structures are repeated.

A nonpneumatic tire assembly includes an outer hoop, a plurality of loops extending inward from the outer hoop, and a hub having a plurality of members. Each of the plurality of members is connected to one of the plurality of loops.

The innovation presented herein provides among its embodiments, a non-pneumatic structure such as a vehicle tire, consisting of a matrix of shape memory alloy (SMA) elements. The interlocking layering pattern provides geometries which leverage the SMA material properties to accomplish performance characteristics of traditional pneumatic structures across a spectrum of possible desired uses including normal personal use, recreational use, sport use and commercial use. Embodiments include applying structural design and material properties to provide a fixed or a variable set of performance characteristics. Similar to the fruits of other space program initiatives, the innovation leverages material science developed for extra-terrestrial purposes to accomplish advances over conventional items.

A non-pneumatic tire includes an inner ring having an axis of rotation and an outer ring coaxial with the inner ring. The non-pneumatic tire further includes support structure extending from the inner ring to the outer ring. The support structure is constructed of a thermoplastic material and having reinforcement cords embedded therein. The non-pneumatic tire also includes a circumferential tread extending about the outer ring.