# US 11,969,663 B2 · Toy vehicle suspension and wheels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,969,663 B2 - Document ID: US11969663B2 - Status: Granted - Kind: B2 - Application number: 17/504,926 - Filed: 2021-10-19 - Published: 2023-04-20 - Granted: 2024-04-30 - Earliest claimed: 2021-10-19 - Assignees: Silverlit Limited - Applicants: Silverlit Limited - Inventors: Kwok Leung Wong - Web page: https://patentgrep.com/patent/US11969663B2 ## CPC - A63H 17/262: {Chassis; Wheel mountings; Wheels; Axles; Suspensions; Fitting body portions to chassis} - A63H 17/36: Steering-mechanisms for toy vehicles - A63H 29/22: Electric drives (power supply through track A63H18/12) - A63H: TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS ## Abstract A toy includes a vehicle body having a front portion and a rear portion. A pair of rear wheels is coupled with the rear portion and located on the vehicle so as to at least partially support the rear portion. A first electric motor is drivingly coupled with the at least one rear wheel. There is a pair of front wheels coupled with the front portion and located on the vehicle so as to at least partially support the front portion. The wheels have two sets of 3-dimensional spokes act as a level of shock absorbent freedom of rotation and a freedom of translation thereby to absorb kinetic energy from an impact force. ## Claims ### Claim 1 A toy vehicle having a vehicle body with a front portion and a rear portion and a longitudinal axis extending through the front and rear portions; at least one rear wheel coupled with the rear portion and located on the vehicle so as to at least partially support the rear portion; at least one front wheel coupled with the front portion and located on the vehicle so as to at least partially support the front portion, wherein each of the at least one rear wheel and each of the at least one front wheel includes a flexible tire supported on a wheel hub assembly, the wheel hub assembly comprising: a first hub part and a second hub part coupled together, the first hub part having an outer rim concentrically spaced from a tubular wheel shaft by a first plurality of three-dimensional S shaped spokes spaced around and extending between the outer rim and the tubular wheel shaft; the second hub part having an inner rim concentrically spaced from a tubular driven shaft by a second plurality of three-dimensional S shaped spokes spaced around and extending between the inner rim and the concentrically spaced tubular driven shaft; wherein first and second pluralities of three-dimensional spokes act as a shock absorber, providing multiple degrees of freedom including a freedom of rotation and a freedom of translation thereby to absorb kinetic energy from an impact force. ### Claim 2 (depends on 1) The toy vehicle according to claim 1 wherein the at least one front wheel is a pair of front wheels spaced apart to either side of the vehicle body, the at least one rear wheel is a pair of rear wheels spaced apart to either side of the vehicle body, wherein the wheels have an outer diameter such that the pair of front wheels extend ahead of the vehicle or the rear wheels extend rearwardly behind the vehicle body, and the tires of the wheels include a low density material. ### Claim 3 (depends on 1) The toy vehicle according to claim 1 wherein the tubular driven shaft is coupled to the tubular wheel shaft such that the shafts may axially move relative to each other. ### Claim 4 (depends on 1) The toy vehicle according to claim 1 further comprising the outer rim of the first hub part having a larger diameter than the inner rim of the second hub part. ### Claim 5 (depends on 1) The toy vehicle according to claim 1 wherein the outer rim has a conical surface portion. ### Claim 6 (depends on 1) The vehicle according to claim 1 wherein each of the plurality of three-dimensional S shaped spokes of the first hub part curves first inward from the tubular wheel shaft toward the second hub part. ### Claim 7 (depends on 1) The toy vehicle according to claim 1 wherein each of the three-dimensional S shaped spokes of the second hub part curves first inward from the tubular driven shaft toward the first hub part. ### Claim 8 (depends on 7) The toy vehicle according to claim 7 wherein each of the plurality of three-dimensional S shaped spokes of the second hub part curves outward beyond the inner rim and then back toward the inner rim. ### Claim 9 (depends on 1) The toy vehicle according to claim 1 wherein each of the plurality of three-dimensional S shaped spokes of the first hub part and the second hub part each first curves inward from its shaft toward an other of the first and the second hub parts. ### Claim 10 (depends on 1) The toy vehicle according to claim 1 wherein the outer rim of the first hub part and the inner rim of the second hub part each has a straight tubular portion. ### Claim 11 (depends on 10) The toy vehicle according to claim 10 wherein the outer rim of the first hub part has a conical tubular portion. ### Claim 12 (depends on 10) The toy vehicle according to claim 10 wherein each of the plurality of three-dimensional S shaped spokes of the first hub part curves outward beyond the straight tubular portion of the outer rim of the first hub part and then back toward the straight tubular portion of the outer rim of the first hub part. ### Claim 13 A toy vehicle having a vehicle body with a front portion and a rear portion and a longitudinal axis extending through the front and rear portions; at least one rear wheel coupled with the rear portion and located on the vehicle so as to at least partially support the rear portion, at least one front wheel coupled with the front portion and located on the vehicle so as to at least partially support the front portion, wherein each of the at least one rear wheel and each of the at least one front wheel includes a flexible tire supported on a wheel hub assembly, the wheel hub assembly comprising: a first hub part and a second hub part axially coupled together, the first hub part having an outer rim concentrically spaced from a tubular wheel shaft by a first plurality of three-dimensional S shaped spokes spaced around and extending between the outer rim and the tubular wheel shaft; the second hub part having an inner rim concentrically spaced from a tubular driven shaft by a second plurality of three-dimensional S shaped spokes spaced around and extending between the inner rim and the concentrically spaced tubular driven shaft; wherein each of the first and second pluralities of three-dimensional spokes acts as a shock absorber, providing multiple degrees of freedom including a freedom of rotation and a freedom of translation thereby to absorb kinetic energy from an impact force. ### Claim 14 (depends on 13) The toy vehicle according to claim 13 wherein the tubular driven shaft is coupled to the tubular wheel shaft such that the shafts may axially move relative to each other. ### Claim 15 (depends on 13) The toy vehicle according to claim 13 further comprising the outer rim of the first hub part having a larger diameter than the inner rim of the second hub part. ### Claim 16 (depends on 13) The toy vehicle according to claim 13 wherein the outer rim has a conical surface. ### Claim 17 (depends on 13) The vehicle according to claim 13 wherein each of the plurality of three-dimensional S shaped spokes of the first hub part curves first inward from the tubular wheel shaft toward the second hub part. ### Claim 18 (depends on 13) The toy vehicle according to claim 13 wherein each of the plurality of three-dimensional S shaped spokes of the second hub part curves first inward from the tubular driven shaft toward the first hub part. ### Claim 19 (depends on 13) The toy vehicle according to claim 13 wherein each of the plurality of three-dimensional S shaped spokes of the first hub part and the second hub part each first curves inward from its shaft toward an other of the first and the second hub parts. ### Claim 20 (depends on 13) The toy vehicle according to claim 13 wherein the outer rim of the first hub part and the inner rim of the second hub part each has a straight tubular portion.