# US 10,479,138 B2 · Electromagnetic wheel assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,138 B2 - Document ID: US10479138B2 - Status: Granted - Kind: B2 - Application number: 15/839,443 - Filed: 2017-12-12 - Published: 2019-06-13 - Granted: 2019-11-19 - Earliest claimed: 2017-12-12 - Applicants: Kevin Christy - Inventors: Kevin Christy - Web page: https://patentgrep.com/patent/US10479138B2 ## CPC - B60B 27/0015: {for driven wheels} - B60B 27/02: adapted to be rotatably arranged on axle - B60B 27/06: adapted to be fixed on axle - B60B 37/10: the wheels being individually rotatable around the axles - B60K 7/0007: {the motor being electric} - F16B 1/00: Devices for securing together, or preventing relative movement between, constructional elements or machine parts - F16C 32/0444: {Details of devices to control the actuation of the electromagnets} - F16C 32/0489: {with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing} - H02K 7/09: with magnetic bearings - H02K 7/1846: {structurally associated with wheels or associated parts (dynamos arranged in the wheel hub of cycles B62J6/12)} - B60K 2007/0038: {the motor moving together with the wheel axle} - B60K 2007/0092: {the motor axle being coaxial to the wheel axle} - B60Y 2400/423: Electromagnetic clutches, e.g. powder type clutches - F16C 2322/39: General buildup of machine tools, e.g. spindles, slides, actuators - F16C 2326/02: Wheel hubs or castors - 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 - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract An electromagnetic wheel assembly includes a spindle that may be rotatably coupled to an axle of a vehicle. A wheel is removably positioned on the spindle. A hub is provided and the spindle is rotatably positioned in the hub. An electromagnet is coupled to the hub. The electromagnet is selectively turned on to magnetically engage the wheel thereby retaining the wheel on the disk. The electromagnet is embedded within the disk. A lock is movably coupled to the spindle. The lock is selectively urged into a locking position to inhibit the wheel from coming off of the spindle when the electromagnet fails. Additionally, the lock is selectively urged into an unlocked position to facilitate the wheel to be removed from the spindle. ## Claims ### Claim 1 An electromagnetic wheel assembly being configured to be electromagnetically coupled to a vehicle thereby facilitating a fastener-free coupling of a wheel to a vehicle, said assembly comprising: a spindle being configured to be rotatably coupled to an axle of a vehicle, said spindle being configured to have a wheel positioned thereon; a hub, said hub having a disk, said hub having said spindle being rotatably positioned therein, said hub being configured to be coupled to a suspension of the vehicle; an electromagnet being coupled to said hub, said electromagnet being selectively turned on wherein said electromagnet is configured to magnetically engage the wheel thereby retaining the wheel on said disk, said electromagnet being embedded within said disk; and a lock being movably coupled to said spindle, said lock being selectively urged into a locking position wherein said lock is configured to inhibit the wheel from coming off of said spindle when said electromagnet fails, said lock being selectively urged into an unlocked position wherein said lock is configured to facilitate the wheel to be removed from said spindle. ### Claim 2 (depends on 1) The assembly according to claim 1, wherein said spindle has a first end, a second end and an outer wall extending therebetween, said spindle being elongated between said first and second ends, said spindle being substantially hollow, said outer wall having an interior surface. ### Claim 3 (depends on 2) The assembly according to claim 2, wherein said outer wall has a plurality of slots, each of said slots extending into an interior of said spindle, each of said slots being oriented to extend from said first end toward said second end, each of said slots being positioned closer to said first end than said second end, said slots being spaced apart from each other and being distributed around said spindle. ### Claim 4 (depends on 2) The assembly according to claim 2, further comprising a flange being coupled to said second end of said spindle wherein said flange is coupled to be coupled to the axle having said spindle being oriented collinear with the axle. ### Claim 5 (depends on 1) The assembly according to claim 1, wherein said hub comprises said disk having a first surface and a second surface, said second surface of said disk being configured to abut the wheel when the wheel is positioned on said spindle. ### Claim 6 (depends on 5) The assembly according to claim 5, further comprising a sleeve being coupled to and extending away from said first surface of said disk, said sleeve having a distal edge with respect to said disk forming an opening into said sleeve. ### Claim 7 (depends on 6) The assembly according to claim 6, wherein said disk has an aperture extending through said first and second surfaces, said aperture being aligned with said sleeve, said opening in said sleeve insertably receiving said spindle having said spindle extending outwardly through said aperture. ### Claim 8 (depends on 6) The assembly according to claim 6, further comprising a pair of bearings, each of said bearings being positioned in said sleeve, each of said bearings being continuous such that each of said bearings forms a closed loop, said spindle extending through each of said bearings such that spindle is retained in a center of said hub. ### Claim 9 (depends on 1) The assembly according to claim 1, further comprising: a power supply being configured to be coupled to the vehicle, said power supply being electrically coupled to said electromagnet; and a control being configured to be positioned in the vehicle thereby facilitating said control to be manipulated, said control being electrically coupled to said electromagnet such that said control turns said electromagnet on and off. ### Claim 10 (depends on 1) The assembly according to claim 1, wherein said lock comprises a plunger having a first end and a second end, each of said first end and said second end flaring outwardly from said plunger, said plunger being slidably positioned within said spindle having each of said first and second ends frictionally engaging an interior surface of said outer wall of said spindle such that plunger forms a fluid impermeable seal with said spindle. ### Claim 11 (depends on 10) The assembly according to claim 10, further comprising a biasing member being positioned between a second end of said spindle and said second end of said plunger such that said biasing member biases said plunger into a first position having said second end of said plunger being urged away from said second end of said spindle. ### Claim 12 (depends on 10) The assembly according to claim 10, further comprising a seal being positioned within said spindle, said plunger extending through said seal such that said seal forms a fluid impermeable seal with said spindle, said seal being positioned between said first end and said second end of said plunger. ### Claim 13 (depends on 12) The assembly according to claim 12, further comprising a hydraulic line being fluidly coupled to said spindle such that said hydraulic line is in fluid communication with said interior of said spindle, said hydraulic line being configured to be fluidly coupled to a hydraulic pump, said hydraulic line being configured to selectively direct hydraulic fluid into spindle between said second end of said plunger and said seal. ### Claim 14 (depends on 13) The assembly according to claim 13, wherein said plunger is urged into a second position when the hydraulic fluid is directed into said spindle such that said second end of said plunger is urged toward said second end of said spindle. ### Claim 15 (depends on 14) The assembly according to claim 14, further comprising a plurality of fingers, each of said fingers having a first end and a second end, said first end corresponding to each of said fingers being pivotally coupled to an outer wall of said spindle. ### Claim 16 (depends on 15) The assembly according to claim 15, wherein: said outer wall of said spindle has a plurality of slots; and each of said fingers is positioned in an associated one of said slots in said spindle, said first end of said plunger being positioned between said fingers and a first end of said spindle when said plunger is in said first position such that each of said fingers rests in said associated slot wherein each of said fingers is configured to be inhibited from engaging the wheel thereby facilitating the wheel to be removed from said spindle. ### Claim 17 (depends on 16) The assembly according to claim 16, wherein said first end of said plunger engages said second end corresponding to each of said fingers when said plunger is in said second position such that each of said fingers extends outwardly from said associated slot wherein each of said fingers is configured to engage the wheel thereby inhibiting the wheel from being removed from said spindle. ### Claim 18 An electromagnetic wheel assembly being configured to be electromagnetically coupled to a vehicle thereby facilitating a fastener-free coupling of a wheel to a vehicle, said assembly comprising: a spindle being configured to be rotatably coupled to an axle of a vehicle, said spindle being configured to have a wheel positioned thereon, said spindle having a first end, a second end and an outer wall extending therebetween, said spindle being elongated between said first and second ends, said spindle being substantially hollow, said outer wall having an interior surface, said outer wall having a plurality of slots, each of said slots extending into an interior of said spindle, each of said slots being oriented to extend from said first end toward said second end, each of said slots being positioned closer to said first end than said second end, said slots being spaced apart from each other and being distributed around said spindle; a flange being coupled to said second end of said spindle wherein said flange is coupled to be coupled to the axle having said spindle being oriented collinear with the axle; a hub having said spindle being rotatably positioned therein, said hub being configured to be coupled to a suspension of the vehicle, said hub comprising: a disk having a first surface and a second surface, said second surface of said disk being configured to abut the wheel when the wheel is positioned on said spindle, a sleeve being coupled to and extending away from said first surface of said disk, said sleeve having a distal edge with respect to said disk forming an opening into said sleeve, said disk having an aperture extending through said first and second surfaces, said aperture being aligned with said sleeve, said opening in said sleeve insertably receiving said spindle having said spindle extending outwardly through said aperture, and a pair of bearings, each of said bearings being positioned in said sleeve, each of said bearings being continuous such that each of said bearings forms a closed loop, said spindle extending through each of said bearings such that spindle is retained in a center of said hub; an electromagnet being coupled to said hub, said electromagnet being selectively turned on wherein said electromagnet is configured to magnetically engage the wheel thereby retaining the wheel on said disk, said electromagnet being embedded within said disk; a power supply being configured to be coupled to the vehicle, said power supply being electrically coupled to said electromagnet; a control being configured to be positioned in the vehicle thereby facilitating said control to be manipulated, said control being electrically coupled to said electromagnet such that said control turns said electromagnet on and off; and a lock being movably coupled to said spindle, said lock being selectively urged into a locking position wherein said lock is configured to inhibit the wheel from coming off of said spindle when said electromagnet fails, said lock being selectively urged into an unlocked position wherein said lock is configured to facilitate the wheel to be removed from said spindle, said lock comprising: a plunger having a first end and a second end, each of said first end and said second end of said plunger flaring outwardly from said plunger, said plunger being slidably positioned within said spindle having each of said first and second ends of said plunger frictionally engaging said interior surface of said outer wall of said spindle such that plunger forms a fluid impermeable seal with said spindle, a biasing member being positioned between said second end of said spindle and said second end of said plunger such that said biasing member biases said plunger into a first position having aid second end of said plunger being urged away from said second end of said spindle, a seal being positioned within said spindle, said plunger extending through said seal such that said seal forms a fluid impermeable seal with said spindle, said seal being positioned between said first end and said second end of said plunger, a hydraulic line being fluidly coupled to said spindle such that said hydraulic line is in fluid communication with said interior of said spindle, said hydraulic line being configured to be fluidly coupled to a hydraulic pump, said hydraulic line being configured to selectively direct hydraulic fluid into spindle between said second end of said plunger and said seal, said plunger being urged into a second position when the hydraulic fluid is directed into said spindle such that said second end of said plunger is urged toward said second end of said spindle, and a plurality of fingers, each of said fingers having a first end and a second end, said first end corresponding to each of said fingers being pivotally coupled to said outer wall of said spindle, each of said fingers being positioned in an associated one of said slots in said spindle, said first end of said plunger being positioned between said fingers and said first end of said spindle when said plunger is in said first position such that each of said fingers rests in said associated slot wherein each of said fingers is configured to be inhibited from engaging the wheel thereby facilitating the wheel to be removed from said spindle, said first end of said plunger engaging said second end corresponding to each of said fingers when said plunger is in said second position such that each of said fingers extends outwardly from said associated slot wherein each of said fingers is configured to engage the wheel thereby inhibiting the wheel from being removed from said spindle.