A wheel assembly for a remote vehicle comprises a wheel structure comprising a plurality of spokes interconnecting a rim and a hub. The spokes comprise at least one slit extending therethrough radially inward from the rim to the hub. The assembly also comprises a flipper structure comprising an arm,
A wheel assembly for a remote vehicle comprises a wheel structure comprising a plurality of spokes interconnecting a rim and a hub. The spokes comprise at least one slit extending therethrough radially inward from the rim to the hub. The assembly also comprises a flipper structure comprising an arm, a plurality of legs, and an attachment base. The plurality of legs and the attachment base comprise a four-bar linkage. The assembly further comprises an insert comprising a bore with a flat surface that tapers outward from a top portion to a bottom portion of the insert. The insert being configured to couple the flipper structure to the wheel structure via an axle on the remote vehicle and prevent backlash between the axle and the flipper structure. The flipper structure being configured to transmit axial forces to the wheel structure. The wheel structure being configured to absorb radial and axial forces.
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1. A wheel assembly for a vehicle, the wheel assembly comprising: a wheel structure including: a continuous, annular rim;a hub; anda plurality of spokes interconnecting the rim and the hub, the spokes comprising at least one slit extending therethrough radially inward from the rim to the hub,wherein
1. A wheel assembly for a vehicle, the wheel assembly comprising: a wheel structure including: a continuous, annular rim;a hub; anda plurality of spokes interconnecting the rim and the hub, the spokes comprising at least one slit extending therethrough radially inward from the rim to the hub,wherein the spokes are configured to absorb radial and axial forces, andwherein the at least one slit is configured to reduce an axial stiffness of the spokes; anda flipper structure coupled to the wheel structure, the flipper structure including: an arm having a proximal end and a distal end;a plurality of legs coupled to the proximal end of the arm; andan attachment base coupled to the plurality of legs,wherein the plurality of legs and the attachment base comprise a four-bar linkage configured to allow translation of the arm during impacts and provide rotational stiffness to the arm to lift the vehicle. 2. The wheel assembly of claim 1, wherein the vehicle is a remote vehicle. 3. The wheel assembly of claim 1, wherein the rim comprises an inner rim, an outer rim, and at least one rib connecting the inner rim and the outer rim. 4. The wheel assembly of claim 1, wherein the plurality of spokes comprise three slits extending therethrough radially inward from the rim to the hub. 5. The wheel assembly of claim 1, wherein each spoke of the plurality of spokes comprises three spoke portions, each spoke portion having a different curvature, and wherein the spoke curvature is configured to eliminate inflection points. 6. The wheel assembly of claim 1, wherein the at least one slit forms a plurality of spoke layers within each spoke, the spoke layers being axially offset from one another around the hub. 7. The wheel assembly of claim 6, wherein the at least one slit comprises three slits forming four spoke layers within each spoke. 8. A flipper structure for a vehicle, the flipper structure comprising: an arm having a proximal end and a distal end;a plurality of legs coupled to the proximal end of the arm; andan attachment base coupled to the plurality of legs,wherein the legs and attachment base comprise a four-bar linkage, andwherein the four-bar linkage is configured to allow translation of the arm during impacts and provide rotational stiffness to the arm to lift the vehicle. 9. The flipper structure of claim 8, wherein the vehicle is a remote vehicle. 10. The flipper structure of claim 8, wherein the arm comprises an inner surface and an outer surface, a thickness of the arm being tapered between the proximal and the distal end of the arm so that the distal end of the arm is thinner than the proximal end of the arm. 11. The flipper structure of claim 10, wherein the inner surface is configured to slant away from the vehicle to form a space between the arm and the vehicle, the space being configured to prevent the distal end from contacting another portion of the vehicle and prevent debris from getting lodged between the arm and the vehicle, and wherein the outer surface is configured to be parallel to the vehicle. 12. The flipper structure of claim 8, wherein the arm comprises at least one hole configured to mount an object and/or a payload. 13. The flipper structure of claim 8, wherein the flipper arm comprises a V-shaped cross-section extending along a longitudinal axis of the flipper structure between the proximate end of the arm and the distal end of the arm. 14. The flipper structure of claim 8, wherein the plurality of legs comprise three legs. 15. An insert for a flipper structure, the insert comprising an annular bushing configured to provide a robust interface between an axle and the flipper structure, the bushing comprising a bore with a flat surface that tapers outward from a top portion of the bushing to a bottom portion of the bushing, wherein the flat surface is configured to prevent backlash between the axle and the flipper structure. 16. The insert of claim 15, wherein the flat surface is offset from an axis of the insert by at least about 15 degrees. 17. The insert of claim 16, wherein the flat surface is offset from the axis by about 16 degrees. 18. A wheel assembly for a remote vehicle, the wheel assembly comprising: a wheel structure comprising a plurality of spokes interconnecting a rim and a hub, the spokes comprising at least one slit extending therethrough radially inward from the rim to the hub;a flipper structure comprising an arm, a plurality of legs, and an attachment base, the plurality of legs and the attachment base comprising a four-bar linkage; andan insert comprising a bore with a flat surface that tapers outward from a top portion of the insert to a bottom portion of the insert, the insert being configured to couple the flipper structure to the wheel structure via an axle on the remote vehicle,wherein the insert is configured to prevent backlash between the axle and the flipper structure,wherein the flipper structure is configured to transmit axial forces to the wheel structure, andwherein the wheel structure is configured to absorb radial and axial forces.
White John R. (Oak Ridge TN) Walker Kenneth L. (Clinton TN) Coughlan Joel B. (Oak Ridge TN) Upton R. Glen (Oak Ridge TN) Farnstrom Kenneth A. (Oak Ridge TN) Harvey Howard W. (Oak Ridge TN), All terrain mobile robot.
Coughlan Joel B. (Bonnerville County ID) Farnstrom Kenneth A. (Anderson County TN) Harvey Howard W. (Roane County TN) Upton R. Glen (Anderson County TN) White John R. (Roane County TN) Walker Kenneth, Small all terrain mobile robot.
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