# US 12,110,950 B1 · Compact two-speed transmission with compound planetary stage > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,950 B1 - Document ID: US12110950B1 - Status: Granted - Kind: B1 - Application number: 18/526,947 - Filed: 2023-12-01 - Granted: 2024-10-08 - Earliest claimed: 2023-12-01 - Assignees: Atieva, Inc. - Applicants: Atieva, Inc. - Inventors: Balazs Palfai; Aravind Srinivasan; Sai Krishna Enabothula; Bela Hegedus; Jean-Philippe Gauthier - Web page: https://patentgrep.com/patent/US12110950B1 ## CPC - F16H 3/666: {with intermeshing orbital gears (F16H3/663 takes precedence)} - B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) - B60K 1/02: comprising more than one electric motor - B60K 17/08: of mechanical type - F16H 3/663: {with conveying rotary motion between axially spaced orbital gears, e.g. a stepped orbital gear or Ravigneaux} - F16H 3/78: Special adaptation of synchronisation mechanisms to these gearings - B60K 17/354: having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels - B60K 17/356: having fluid or electric motor, for driving one or more wheels - B60K 2001/001: {one motor mounted on a propulsion axle for rotating right and left wheels of this axle} - B60Y 2200/91: Electric vehicles - F16H 2200/0021: specially adapted for electric vehicles - F16H 2200/0034: the gear ratios comprising two forward speeds - F16H 2200/2005: with one sets of orbital gears - F16H 2200/2007: with two sets of orbital gears - F16H 2200/2035: with two engaging means - F16H 2200/2069: using two freewheel mechanism - F16H 2200/2084: two freewheel mechanisms - F16H: GEARING - 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 - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract A transmission comprises: a first planetary stage including a first ring gear defining first internal teeth; a ground component defining second internal teeth; a compound planetary stage including a one-way clutch with an inner race and an outer race, the outer race having a first tapered surface; and an adaptor defining external teeth and a second tapered surface, the adaptor being movable into at least a first position where the first tapered surface and the second tapered surface are connected with each other, and into a second position where instead the first internal teeth are gear coupled with the second internal teeth. ## Claims ### Claim 1 A transmission comprising: a first planetary stage including a first ring gear defining first internal teeth; a ground component defining second internal teeth; a compound planetary stage including a one-way clutch with an inner race and an outer race, the outer race having a first tapered surface; and an adaptor defining external teeth and a second tapered surface, the adaptor being movable into at least a first position where the first tapered surface and the second tapered surface are connected with each other, and into a second position where instead the first internal teeth are gear coupled with the second internal teeth. ### Claim 2 (depends on 1) The transmission of claim 1, wherein the compound planetary stage has a common shaft with the first planetary stage. ### Claim 3 (depends on 1) The transmission of claim 1, wherein the adaptor is also movable into at least a third position where the first tapered surface and the second tapered surface are not connected with each other, and where the first internal teeth are not gear coupled with the second internal teeth. ### Claim 4 (depends on 1) The transmission of claim 1, wherein the first position corresponds to a first gear ratio for the transmission, and wherein the second position corresponds to a second gear ratio for the transmission. ### Claim 5 (depends on 4) The transmission of claim 4, wherein the first gear ratio is greater than the second gear ratio. ### Claim 6 (depends on 1) The transmission of claim 1, wherein the first planetary stage further comprises: a sun gear to be rotated about an axis by a rotor shaft; and a first planetary gear that is gear coupled to the sun gear. ### Claim 7 (depends on 6) The transmission of claim 6, wherein the first planetary stage comprises multiple first planetary gears that are gear coupled to the sun gear. ### Claim 8 (depends on 6) The transmission of claim 6, wherein the compound planetary stage further comprises: a second planetary gear; a second ring gear that is gear coupled to the second planetary gear; and a carrier member carrying the first and second planetary gears. ### Claim 9 (depends on 8) The transmission of claim 8, wherein the first planetary gear has a first diameter, wherein the second planetary gear has a second diameter, and wherein the first diameter is greater than the second diameter. ### Claim 10 (depends on 8) The transmission of claim 8, wherein the carrier member is coaxial with the sun gear. ### Claim 11 (depends on 8) The transmission of claim 8, wherein the inner race of the one-way clutch is coupled to the second ring gear. ### Claim 12 (depends on 8) The transmission of claim 8, wherein the compound planetary stage comprises multiple second planetary gears that are gear coupled to the second ring gear. ### Claim 13 (depends on 8) The transmission of claim 8, wherein the second planetary gear has a common shaft with the first planetary gear. ### Claim 14 (depends on 1) The transmission of claim 1, further comprising another one-way clutch coupled between the first ring gear and ground in the transmission. ### Claim 15 A transmission comprising: a first planetary stage including a first ring gear; a ground component; a compound planetary stage including a second ring gear; and means for selectively i) connecting the second ring gear to the ground component, wherein the transmission has a first gear ratio, and ii) instead connecting the first ring gear to the ground component, wherein the transmission has a second gear ratio. ### Claim 16 A vehicle comprising: a first electric motor having a first rotor shaft; and a first transmission coupled to the first rotor shaft of the first electric motor, the first transmission comprising: a first planetary stage including a first ring gear defining first internal teeth; a ground component defining second internal teeth; a compound planetary stage including a one-way clutch with an inner race and an outer race, the outer race having a first tapered surface; and an adaptor defining external teeth and a second tapered surface, the adaptor being movable into at least a first position where the first tapered surface and the second tapered surface are connected with each other, and into a second position where instead the first internal teeth are gear coupled with the second internal teeth. ### Claim 17 (depends on 16) The vehicle of claim 16, wherein: in the first position of the adaptor the first transmission has a first gear ratio, wherein in the first gear ratio the first transmission: does not provide regenerative braking; and provides a reverse gear mode by reversing a rotation direction of the first rotor shaft; and in the second position of the adaptor the first transmission has a second gear ratio, and wherein in the second gear ratio the first transmission: does provide the regenerative braking; and does not provide the reverse gear mode. ### Claim 18 (depends on 17) The vehicle of claim 17, further comprising: a second electric motor having a second rotor shaft; and a second transmission coupled to the second rotor shaft of the second electric motor; wherein: in the first gear ratio of the first transmission the vehicle uses the second transmission for regenerative braking using; and in the second gear ratio of the first transmission the vehicle uses the second transmission for the reverse gear mode. ### Claim 19 (depends on 15) The transmission of claim 15, wherein the compound planetary stage has a common shaft with the first planetary stage. ### Claim 20 (depends on 15) The transmission of claim 15, wherein the first planetary stage further comprises: a sun gear to be rotated about an axis by a rotor shaft; and a first planetary gear that is gear coupled to the sun gear.