# US 2019/0356206 A1 · Dual axis motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0356206 A1 - Document ID: US20190356206A1 - Status: Published application - Kind: A1 - Application number: 15/983,323 - Filed: 2018-05-18 - Published: 2019-11-21 - Earliest claimed: 2018-05-18 - Assignees: Kohler Co. - Applicants: Kohler Co. - Inventors: Isaac S. Frampton; Adam Larson - Web page: https://patentgrep.com/patent/US20190356206A1 ## CPC - H02K 26/00: Machines adapted to function as torque motors, i.e. to exert a torque when stalled - F16H 1/46: Systems consisting of a plurality of gear trains each with orbital gears, {i.e. systems having three or more central gears} - F16H 3/54: one of the central gears being internally toothed and the other externally toothed - F16H 61/0202: {the signals being electric} - H02K 7/102: with friction brakes - H02K 7/108: with friction clutches - H02K 7/116: with gears - H02K 11/30: Structural association with control circuits or drive circuits - H02K 16/00: Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029)} - H02P 5/747: mechanically coupled by gearing - F16H 57/10: Braking arrangements - F16H 2200/0034: the gear ratios comprising two forward speeds - F16H 2200/2005: with one sets of orbital gears - H02K 7/006: {Structural association of a motor or generator with the drive train of a motor vehicle} - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - F16H: GEARING - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ## Abstract A dual axis motor a first epicyclic gear, a second epicyclic gear, a rim gear, an inner rotor, an outer rotor, a brake and a stator assembly. The second epicyclic gear is operative to mesh with the first epicyclic gear and move in around the first epicyclic. The inner rotor is fixedly connected to the first epicyclic gear. The outer rotor fixedly is connected to the second epicyclic gear. The stator assembly spaced from the inner rotor by a first gap and spaced from the outer rotor by a second gap. The motor provides a resultant torque to driven device. The resultant torque is provided by the inner rotor, outer rotor, the brake, or by sudden deceleration of one or more elements within the dual axis motor. The gear ratio provided by the first and second epicyclic gear allow for an enhanced speed range while providing high starting torque. ## Claims ### Claim 1 An apparatus comprising: a first epicyclic gear; a second epicyclic gear operative to mesh with the first epicyclic gear and move in relation to the first epicyclic gear to be carried around the first epicyclic gear; a rim gear operative to mesh with the second epicyclic gear such that the second epicyclic gear revolves within the rim gear; an inner rotor connected to the first epicyclic gear or the second epicyclic gear; an outer rotor connected to the second epicyclic gear or the rim gear; and a stator assembly spaced from the inner rotor by a first gap and spaced from the outer rotor by a second gap. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the second epicyclic gear is included in a plurality of second epicyclic gears, the apparatus further comprising: a carrier physically connected to the plurality of second epicyclic gears, wherein the carrier provides an output rotation to a driven device. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the output rotation includes a first torque associated with the first epicyclic gear and a second torque associated with the second epicyclic gear. ### Claim 4 (depends on 1) The apparatus of claim 1, the stator assembly further comprising: an outer stator configured to cause the outer rotor to rotate; and an inner stator configured to cause the inner rotor to rotate. ### Claim 5 (depends on 4) The apparatus of claim 4, further comprising: a controller connected to provide a first control signal to the outer stator for the outer rotor and a second control signal to the inner stator for the inner rotor. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the controller is configured to receive a requested torque and to sequence the first control signal, second control signal, and outer rotor brake signal are in response to the requested torque. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the requested torque is received from a user input for a torque assist selection made by a user. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the requested torque is received from a load signal or a feedback signal. ### Claim 9 (depends on 5) The apparatus of claim 5, further comprising: an outer brake, operatively connected to provide braking torque to outer rotor, wherein the controller is configured to generate an outer rotor brake signal for the outer brake connected to the outer rotor. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the first control signal, the second control signal, and the outer rotor brake signal are sequenced to increase an output torque. ### Claim 11 (depends on 9) The apparatus of claim 9, further comprising: an inner brake, operatively connected to provide braking torque to the inner rotor, wherein the controller is configured to generate an inner rotor brake signal for the brake connected to the inner rotor. ### Claim 12 (depends on 5) The apparatus of claim 5, further comprising: an inner brake, operatively connected to provide braking torque to the inner rotor, wherein the controller is configured to generate an inner rotor brake signal for the brake connected to the inner rotor. ### Claim 13 A method comprising: providing a first magnetic field to rotate an inner rotor fixedly connected to a first epicyclic gear; providing a second magnetic field to rotate an outer rotor fixedly connected to a rim gear, wherein the rim gear revolves around the first epicyclic gear and a second epicyclic gear and is meshed with the second epicyclic gear, wherein the second epicyclic gear is carried by a carrier coupled to an output shaft providing resultant torque to a driven device; and generating a braking signal configured to selectively brake the rim gear meshed with the second epicyclic gear. ### Claim 14 (depends on 13) The method of claim 13, wherein the resultant torque is attributable to the first magnetic field and the second magnetic field. ### Claim 15 (depends on 13) The method of claim 13, wherein the resultant torque is attributable to a decrease in a rotating speed of the inner rotor or the outer rotor. ### Claim 16 (depends on 15) The method of claim 15, where the decrease in the rotating speed of the outer rotor is caused by application of a brake on the rim gear via the braking signal. ### Claim 17 (depends on 13) The method of claim 13, wherein the first magnetic field is provided by an inner stator spaced from the inner rotor by a first air gap and the second magnetic field is provided by an outer stator spaced from the outer rotor by a second air gap. ### Claim 18 (depends on 13) The method of claim 13, wherein the resultant torque is applied to the driven device in response to the braking signal. ### Claim 19 (depends on 13) The method of claim 13, wherein the resultant torque is applied based on a demand signal from the driven device. ### Claim 20 (depends on 13) The method of claim 13, wherein the resultant torque is applied based on a measured characteristic of the first magnetic field, the second magnetic field, the inner rotor, the outer rotor, or the driven device.