# US 2021/0242805 A1 · Electrostatic motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242805 A1 - Document ID: US20210242805A1 - Status: Published application - Kind: A1 - Application number: 17/234,520 - Filed: 2021-04-19 - Published: 2021-08-05 - Earliest claimed: 2020-01-03 - Assignees: C-Motive Technologies, Inc. - Applicants: C-Motive Technologies, Inc. - Inventors: Ryan Knippel; William D. Butrymowicz; Baoyun Ge - Web page: https://patentgrep.com/patent/US20210242805A1 ## CPC - H02N 1/006: {of the gap-closing type (H02N1/004 takes precedence)} - H02N 1/002: {Electrostatic motors} - H02N 1/004: {in which a body is moved along a path due to interaction with an electric field travelling along the path} - H02N 2/12: Constructional details - H02N 2/14: Drive circuits; Control arrangements {or methods} - Y10T 29/49009: Dynamoelectric machine - Y10T 29/5313: Means to assemble electrical device - H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An example apparatus including a rotor stage of an electrostatic machine, the rotor stage including a rotor plate, at least one rotor via, a rotor power distribution board including at least one rotor power distribution bus, at least one rotor power coupling perforation, and a rotor electrical coupling circuit; a stator stage of the electrostatic machine, the stator stage including a stator plate, at least one stator via, a stator power distribution board including at least one stator power distribution bus, at least one stator power coupling perforation; and a stator electrical coupling circuit structured to electrically couple the at least one stator power distribution bus to at least a portion of the plurality of stator electrodes, wherein the stator electrical coupling circuit extends through the at least one stator via and the at least one stator power coupling perforation. ## Claims ### Claim 1 An apparatus, comprising: a rotor stage of an electrostatic machine, the rotor stage comprising: a rotor plate comprising a plurality of rotor electrodes positioned on a first side of the rotor plate; at least one rotor via comprising an electrical connection between the first side of the rotor plate and a second side of the rotor plate; a rotor power distribution board positioned on a second side of the rotor plate, the rotor power distribution board comprising: at least one rotor power distribution bus on a first side of the rotor power distribution board; at least one rotor power coupling perforation; and wherein a second side of the rotor power distribution board faces the second side of the rotor plate; and a rotor electrical coupling circuit structured to electrically couple the at least one rotor power distribution bus to at least a portion of the plurality of rotor electrodes, wherein the rotor electrical coupling circuit extends through the at least one rotor via and the at least one power coupling perforation; and a stator stage of the electrostatic machine, the stator stage comprising: a stator plate comprising a plurality of stator electrodes positioned on a first side of the stator plate; at least one stator via comprising an electrical connection between the first side of the stator plate and a second side of the stator plate; a stator power distribution board positioned on a second side of the stator plate, the stator power distribution board comprising: at least one stator power distribution bus on a first side of the stator power distribution board; at least one stator power coupling perforation; and wherein a second side of the stator power distribution board faces the second side of the stator plate; and a stator electrical coupling circuit structured to electrically couple the at least one stator power distribution bus to at least a portion of the plurality of stator electrodes, wherein the stator electrical coupling circuit extends through the at least one stator via and the at least one stator power coupling perforation. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein at least one of the rotor power distribution board or the stator power distribution board comprises a printed circuit board (PCB). ### Claim 3 (depends on 1) The apparatus of claim 1, wherein at least one of the rotor plate or the stator plate comprises a printed circuit board (PCB). ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the PCB comprises at least one substrate comprising a material selected from among: alumina, aluminum nitride, beryllium oxide, or boron nitride. ### Claim 5 (depends on 2) The apparatus of claim 2, wherein the PCB comprises at least one substrate comprising a material selected from among: polytetrafluoroethylene, a polyimide, or polyether ether ketone. ### Claim 6 (depends on 2) The apparatus of claim 2, wherein the PCB comprises at least one substrate comprising a material selected from among: a hydrocarbon ceramic laminate, a pre-impregnated composite material, or a ceramic-filled laminate material. ### Claim 7 (depends on 2) The apparatus of claim 2, wherein the PCB comprises at least one substrate comprising a material selected from among: a low dielectric constant material, a direct bond copper material, a crystalline thermopolymer, or an acetal thermoplastic. ### Claim 8 (depends on 2) The apparatus of claim 2, wherein the PCB comprises at least one substrate comprising a material selected from among: fiberglass, FR-4 fiberglass, FR-5 fiberglass, FR-6 fiberglass, G-10 fiberglass, G-11 fiberglass, or high strength glass. ### Claim 9 (depends on 3) The apparatus of claim 3, wherein the at least one of the rotor plate or the stator plate further comprises a supplementary rigid substrate, and wherein the PCB is mounted to the supplementary rigid substrate. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the supplementary rigid substrate comprises at least one material selected from the materials consisting of: alumina, aluminum nitride, aluminum, steel, mild steel, high strength steel, titanium, carbon fiber, a foamed substrate, a foamed polymeric substrate, a foamed metallic substrate, a foamed metallized substrate, beryllium oxide, boron nitride, polytetrafluoroethylene, a polyimide, polyether ether ketone, a direct bond copper material, a crystalline thermopolymer, an acetal thermoplastic, fiberglass, FR-4 fiberglass, FR-5 fiberglass, FR-6 fiberglass, G-10 fiberglass, G-11 fiberglass, or high strength glass, or high strength glass. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the rotor stage further comprises a rotor stack, the rotor stack comprising a plurality of additional rotor plates, each of the plurality of additional rotor plates comprising: a plurality of rotor electrodes positioned on each side of the additional rotor plate; and at least one rotor via comprising an electrical connection between a first side of the additional rotor plate and a second side of the additional rotor plate. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the stator stage further comprises a stator stack, the stator stack comprising a plurality of additional stator plates, each of the plurality of additional stator plates comprising: a plurality of stator electrodes positioned on each side of the additional stator plate; and at least one stator via comprising an electrical connection between a first side of the additional stator plate and a second side of the additional stator plate. ### Claim 13 A rotor stage of an electrostatic machine, the rotor stage comprising: a rotor plate comprising a plurality of rotor electrodes positioned on a first side of the rotor plate; at least one rotor via comprising an electrical connection between the first side of the rotor plate and a second side of the rotor plate; a rotor power distribution board positioned on a second side of the rotor plate, the rotor power distribution board comprising: at least one rotor power distribution bus on a first side of the rotor power distribution board; at least one rotor power coupling perforation; and wherein a second side of the rotor power distribution board faces the second side of the rotor plate; and a rotor electrical coupling circuit structured to electrically couple the at least one rotor power distribution bus to at least a portion of the plurality of rotor electrodes, wherein the rotor electrical coupling circuit extends through the at least one rotor via and the at least one power coupling perforation. ### Claim 14 (depends on 13) The rotor stage of claim 13, further comprising a plurality of mechanical pads interposed between the rotor plate and the rotor power distribution board. ### Claim 15 (depends on 14) The rotor stage of claim 14, wherein the plurality of mechanical pads are each affixed to at least one of the rotor plate or the rotor power distribution board. ### Claim 16 (depends on 15) The rotor stage of claim 15, wherein at least a portion of the plurality of mechanical pads are affixed to the rotor plate, and wherein the at least a portion of the plurality of mechanical pads include at least one inner mechanical pad positioned radially inside the rotor electrodes, and outer mechanical pads positioned radially outside the rotor electrodes. ### Claim 17 (depends on 16) The rotor stage of claim 16, wherein the at least one inner mechanical pad is distributed azimuthally around the rotor plate. ### Claim 18 (depends on 16) The rotor stage of claim 16, wherein the outer mechanical pads are distributed azimuthally around the rotor plate. ### Claim 19 A stator stage of an electrostatic machine, the stator stage comprising: a stator plate comprising a plurality of stator electrodes positioned on a first side of the stator plate; at least one stator via comprising an electrical connection between the first side of the stator plate and a second side of the stator plate; a stator power distribution board positioned on a second side of the stator plate, the stator power distribution board comprising: at least one stator power distribution bus on a first side of the stator power distribution board; at least one stator power coupling perforation; and wherein a second side of the stator power distribution board faces the second side of the stator plate; and a stator electrical coupling circuit structured to electrically couple the at least one stator power distribution bus to at least a portion of the plurality of stator electrodes, wherein the stator electrical coupling circuit extends through the at least one stator via and the at least one stator power coupling perforation. ### Claim 20 (depends on 19) The stator stage of claim 19, further comprising a plurality of mechanical pads interposed between the stator plate and the stator power distribution board. ### Claim 21 (depends on 20) The stator stage of claim 20, wherein the plurality of mechanical pads are each affixed to at least one of the stator plate or the stator power distribution board. ### Claim 22 (depends on 21) The stator stage of claim 21, wherein at least a portion of the plurality of mechanical pads are affixed to the stator plate, and wherein the at least a portion of the plurality of mechanical pads include at least one inner mechanical pad positioned radially inside the stator electrodes, and outer mechanical pads positioned radially outside the stator electrodes. ### Claim 23 (depends on 22) The stator stage of claim 22, wherein the at least one inner mechanical pad is distributed azimuthally around the stator plate. ### Claim 24 (depends on 22) The stator stage of claim 22, wherein the outer mechanical pads are distributed azimuthally around the stator plate. ### Claim 25 (depends on 19) The stator stage of claim 19, wherein the stator electrical coupling circuit further comprises a compliant electrical connection interposed between the stator plate and the stator power distribution board. ### Claim 26 (depends on 19) The stator stage of claim 19, wherein the stator plate further comprises a plurality of stator plate sectors, each comprising an azimuthal portion of the stator plate. ### Claim 27 (depends on 3) The apparatus of claim 3, wherein the PCB comprises at least one substrate comprising a material selected from among: alumina, aluminum nitride, beryllium oxide, or boron nitride. ### Claim 28 (depends on 3) The apparatus of claim 3, wherein the PCB comprises at least one substrate comprising a material selected from among: polytetrafluoroethylene, a polyimide, or polyether ether ketone. ### Claim 29 (depends on 3) The apparatus of claim 3, wherein the PCB comprises at least one substrate comprising a material selected from among: a hydrocarbon ceramic laminate, a pre-impregnated composite material, or a ceramic-filled laminate material. ### Claim 30 (depends on 3) The apparatus of claim 3, wherein the PCB comprises at least one substrate comprising a material selected from among: a low dielectric constant material, a direct bond copper material, a crystalline thermopolymer, or an acetal thermoplastic. ### Claim 31 (depends on 3) The apparatus of claim 3, wherein the PCB comprises at least one substrate comprising a material selected from among: fiberglass, FR-4 fiberglass, FR-5 fiberglass, FR-6 fiberglass, G-10 fiberglass, G-11 fiberglass, or high strength glass.