Tire with spoke loops
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.
1 . A nonpneumatic tire having a central axis and an equatorial plane, the nonpneumatic tire comprising:
a serpentine spoke ply disposed continuously about the central axis of the nonpneumatic tire, such that the serpentine spoke ply follows a winding path between an inner diameter and an outer diameter, and such that the serpentine spoke ply has:
a plurality of inner portions that extend in a substantially circumferential direction about the inner diameter,
a plurality of outer portions that extend in a substantially circumferential direction about the outer diameter, and
a plurality of spoke portions that extend between the inner diameter and the outer diameter;
an outer hoop connected to the plurality of outer portions of the serpentine spoke ply; and
a hub connected to a plurality of mounting members, the hub having a flange portion,
wherein each of the plurality of mounting members includes a mounting bar and a plurality of radially extending bolts connecting the mounting bar to the flange portion of the hub,
wherein each of the plurality of inner portions engages the mounting bar of a corresponding mounting member,
wherein the mounting bar and the plurality of radially extending bolts are arranged such that tightening the plurality of radially extending bolts adjusts the radial position of the mounting bar, which applies tension to the serpentine spoke ply in a radial direction.
2 . The nonpneumatic tire of claim 1 , wherein each of the plurality of spoke portions of the serpentine spoke ply extends in a substantially radial direction.
3 . The nonpneumatic tire of claim 1 , wherein each of the plurality of inner portions of the serpentine spoke ply extends at an angle of less than 45 degrees with respect to the equatorial plane.
4 . The nonpneumatic tire of claim 1 , further comprising a plurality of fillets disposed between the spoke portions and the outer hoop.
5 . The nonpneumatic tire of claim 1 , wherein a total arc length of the plurality of inner portions of the serpentine spoke ply is between 120 degrees and 240 degrees.
6 . The nonpneumatic tire of claim 5 , wherein a total arc length of the plurality of outer portions of the serpentine spoke ply is between 120 degrees and 240 degrees.
7 . The nonpneumatic tire of claim 6 , wherein a sum of the total arc length of the plurality of inner portions of the serpentine spoke ply and the total arc length of the plurality of outer portions of the serpentine spoke ply is not more than 360 degrees.
8 . A nonpneumatic tire assembly comprising:
an outer hoop;
a plurality of loops extending inward from the outer hoop;
a hub having a flange; and
a plurality of members connected to the flange of the hub by a plurality of radially extending bolts, each of the plurality of members connected to one of the plurality of loops, wherein each of the plurality of members is adjustable in a radial direction via the radially extending bolts.
9 . The nonpneumatic tire assembly of claim 8 , wherein the plurality loops are formed by a single sheet of material.
10 . The nonpneumatic tire assembly of claim 8 , wherein the plurality of loops are formed by cutting slots in the outer hoop.
11 . The nonpneumatic tire assembly of claim 8 , wherein the outer hoop and the plurality of loops are formed of the same material.
12 . The nonpneumatic tire assembly of claim 8 , wherein each of the plurality of members and the plurality of radially extending bolts are arranged such that tightening the plurality of radially extending bolts applies tension to the plurality of loops in a radial direction.
13 . A nonpneumatic tire assembly comprising:
an outer hoop;
a plurality of loops extending inward from the outer hoop;
a hub connected to a plurality of mounting members, the hub having a flange portion,
wherein each of the plurality of mounting members includes a mounting bar and a plurality of radially extending bolts connecting the mounting bar to the flange portion of the hub,
wherein each of the plurality of loops engages the mounting bar of a corresponding mounting member,
wherein the mounting bar and the plurality of radially extending bolts are arranged such that tightening the plurality of radially extending bolts adjusts the radial position of the mounting bar, which applies tension to the plurality of loops in a radial direction.
14 . The nonpneumatic tire assembly of claim 13 , wherein each of the plurality of loops includes a portion that extends in a substantially radial direction.
15 . The nonpneumatic tire assembly of claim 13 , wherein each of the plurality of loops includes a portion that extends at an angle of less than 45 degrees with respect to an equatorial plane of the nonpneumatic tire.
16 . The nonpneumatic tire assembly of claim 13 wherein each of the plurality of loops is formed by at least two plies of materials calendered together.