# US 11,440,351 B2 · Wheel and airless tire assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,351 B2 - Document ID: US11440351B2 - Status: Granted - Kind: B2 - Application number: 16/638,268 - Filed: 2017-09-12 - Published: 2020-06-04 - Granted: 2022-09-13 - Earliest claimed: 2017-09-12 - Applicants: Sung Kee Lee - Inventors: Sung Kee Lee - Web page: https://patentgrep.com/patent/US11440351B2 ## CPC - B60B 25/00: Rims built-up of several main parts {; Locking means for the rim parts}(tools for assembling divided rims B60B31/04) - B60C 7/18: disposed radially relative to wheel axis - B60B 9/02: using springs {resiliently mounted bicycle rims}(wheels comprising resilient spokes B60B9/26) - B60B 19/00: Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group - B60B 21/02: characterised by transverse section - B60C 7/102: {Tyres built-up with separate rubber parts} - B60C 7/107: {comprising lateral openings} - B60C 7/146: {extending substantially radially, e.g. like spokes} - B60C 7/20: disposed circumferentially relative to wheel axis - B60C 7/24: characterised by means for securing tyres on rim or wheel body - B60C 7/26: using bolts - B60C 11/11: in which the raised area of the pattern consists only of isolated elements, e.g. blocks (B60C11/12, B60C11/13 take precedence) - B60B 2900/523: Tyre fixation on rim, e.g. fixing axially or circumferentially thereon - B60C 2200/06: for heavy duty vehicles - B60C 2200/065: for construction vehicles - B60C 2200/08: for agricultural vehicles - B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES ## Abstract 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. ## Claims ### Claim 1 A wheel and airless tire assembly comprising: a cylindrical inner wheel including flanges on either edge that face each other, the flanges having fin fastening holes spaced at regular intervals around the circumference; a cylindrical outer wheel for receiving the inner wheel, the cylindrical outer wheel comprising a drum and a tread part molded into an axially outer surface of the drum with either a plurality of through holes or irregularities or both in such a way as to be united with the drum, with an axially inner periphery of the tread part being embedded in the through holes or irregularities; a cylindrical middle wheel mounted between the inner wheel and the outer wheel, that includes quadrangular elastomers with hollows inside that are arranged at regular intervals, a peripheral part with fin fastening holes that is formed on an axially inner periphery of the arranged elastomers, and ribs formed in a middle of the elastomers; a fixing means for firmly attaching an axially inside of the outer wheel to an axially 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 of the inner wheel and the fin fastening holes of the middle wheel, after the axially inside of the middle wheel is firmly attached to an axially outside of the inner wheel. ### Claim 2 (depends on 1) The wheel and airless tire assembly of claim 1, wherein the flanges of the inner wheel come into close contact with the peripheral part of the middle wheel while holding the same. ### Claim 3 (depends on 1) The wheel and airless tire assembly of claim 1, wherein the elastomers are in either a rectangular or trapezoidal shape. ### Claim 4 (depends on 1) The wheel and airless tire assembly of claim 1, wherein stepped parts, shorter in height than a middle part, are formed around the circumference on either edge of the elastomers arranged at regular intervals. ### Claim 5 (depends on 1) The wheel and airless tire assembly of claim 1, wherein the fixing means comprises: fixing pieces attached to the hollows of the elastomers by being inserted along a width of the elastomers; and bolts for fixing two ends of the fixing pieces, the elastomers, and the drum together by being inserted therethrough. ### Claim 6 (depends on 1) The wheel and airless tire assembly of claim 1, wherein the fixing means comprises: L-shaped reinforced rings attached to either axially inside edge of the drum; bolts for fixing one side of the reinforced rings and the drum together by being inserted therethrough; and fixing pins that are inserted along an other side of the reinforced rings and a width of the elastomers. ### Claim 7 (depends on 1) The wheel and airless tire assembly of claim 1, wherein a hub that configures to fit in with a wheel axle mounting structure is mounted inside the inner wheel.