# US 12,009,126 B2 · Resistor support assembly with spring seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,126 B2 - Document ID: US12009126B2 - Status: Granted - Kind: B2 - Application number: 17/200,827 - Filed: 2021-03-13 - Published: 2022-09-15 - Granted: 2024-06-11 - Earliest claimed: 2021-03-13 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Kyle S. Sirbasku; Dhaval Patel; Andrew R. Wilkinson; Mary Christelle Ann Calacal; Yaser J. Isa; Edward C. Allen; Duane C. Johnson - Web page: https://patentgrep.com/patent/US12009126B2 ## CPC - H01C 1/01: Mounting; Supporting - H02K 11/0094: {Structural association with other electrical or electronic devices} - H02K 19/36: Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches - H02K 7/003: {Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28)} - H02K 11/042: Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts - H02K 19/38: Structural association of synchronous generators with exciting machines - H01C: RESISTORS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract An assembly comprises a resistor support housing for a rotating rectifier assembly (RRA). A shaft bore is defined through the resistor support housing for passage of a shaft of an electrical machine. The resistor support housing defines a main annular body around the shaft bore. An end housing is mounted to one axial end of the resistor support housing. The end housing defines a portion of the shaft bore therethrough. ## Claims ### Claim 1 An assembly comprising: a resistor support housing for a rotating rectifier assembly (RRA), wherein a shaft bore is defined through the resistor support housing for passage of a shaft of an electrical machine, wherein the resistor support housing defines a main annular body around the shaft bore; an end housing mounted to the main annular body at one axial end of the resistor support housing at a joining interface via press fit, wherein the end housing defines a portion of the shaft bore therethrough; and an anti-rotation tab extending axially from the end housing, wherein the anti-rotation tab is seated in an anti-rotation notch defined in the main annular body with the end housing mounted to the main annular body at the joining interface, wherein the anti-rotation tab is defined at least partially in the joining interface; wherein the resistor support housing is of Aluminum, wherein the end housing is of steel. ### Claim 2 (depends on 1) The assembly as recited in claim 1, wherein the resistor support housing is of a first material that is electrically conductive, and wherein the end housing is of a second material with higher mechanical strength than the first material. ### Claim 3 (depends on 1) The assembly as recited in claim 1, wherein a circumferential notch is defined through a rim portion of the resistor support housing axially opposite the end housing. ### Claim 4 (depends on 1) The assembly as recited in claim 1, wherein a circumferential spring seat is defined around the end housing, wherein the spring seat is defined by an annular, axial facing surface of the end housing, and a radially outward facing surface of the end housing. ### Claim 5 (depends on 4) The assembly as recited in claim 4, wherein the resistor support housing and end housing are free of Beryllium Copper (BeCu). ### Claim 6 (depends on 1) The assembly as recited in claim 1, wherein the resistor support housing and end housing are assembled into a resistor package of a rotating rectifier assembly (RRA) of a variable frequency generator (VFG). ### Claim 7 (depends on 6) The assembly as recited in claim 6, wherein the end housing is engaged with an axially loaded disconnect spring in compression. ### Claim 8 (depends on 6) The assembly as recited in claim 6, wherein the resistor support housing is electrically connected as negative rail of a circuit of the RRA. ### Claim 9 (depends on 6) The assembly as recited in claim 6, further comprising: a resistor plate assembly stacked axially with the resistor support housing; and a resistor seated in the shaft bore of the resistor support housing, wherein the resistor plate assembly is axially engaged with the resistor. ### Claim 10 (depends on 9) The assembly as recited in claim 9, wherein the resistor package is mechanically between a diode package of the RRA and a disconnect spring, and wherein the resistor package is electrically between the diode package and one or more main field windings of the VFG. ### Claim 11 An resistor support housing for a rotating rectifier assembly (RRA), comprising: an annular body including a shaft bore defined therethrough for passage of a shaft of an electrical machine along a shaft axis, the body having a first annular end portion and a second annular end portion extending axially from the first annular end portion; and an annular end housing defining a second shaft bore therethrough, the annular end housing -configured to be press fit to the second annular end portion of the annular body, wherein with the annular body and the annular end housing press fit together, a joining interface is formed between the second annular end portion of the annular body and the annular end housing, wherein, an anti-rotation feature is defined within the joining interface including a notch formed within the second annular end portion and a tab extending from the end housing portion configured to be inserted into the notch, wherein the annular body is of a first material that is electrically conductive, and wherein the annular end housing is of a second material, different than the first material, with higher mechanical strength than the first material, wherein the first material is Aluminum and wherein the second material is steel. ### Claim 12 (depends on 11) The resistor support housing as recited in claim 11, wherein a circumferential notch is defined through a rim portion of the annular body in the first annular end portion. ### Claim 13 (depends on 11) The resistor support housing as recited in claim 11, wherein a circumferential spring seat is defined around the annular end portion, wherein the spring seat is defined by an annular, axial facing surface of the annular end portion, and a radially outward facing surface of the annular end portion. ### Claim 14 (depends on 13) The resistor support housing as recited in claim 13, wherein the annular body and the annular end portion are free of Beryllium Copper (BeCu). ### Claim 15 (depends on 11) The resistor support housing as recited in claim 11, wherein the annular body and the annular end portion are configured to assembled into a resistor package of a rotating rectifier assembly (RRA) of a variable frequency generator (VFG). ### Claim 16 (depends on 15) The resistor support housing as recited in claim 15, wherein the annular end portion is configured to be engaged with an axially loaded disconnect spring in compression. ### Claim 17 (depends on 15) The resistor support housing as recited in claim 15, wherein the annular body is configured to be electrically connected as negative rail of a circuit of the RRA. ### Claim 18 (depends on 15) The resistor support housing as recited in claim 15, further comprising: a resistor plate assembly stacked axially with the annular body; and a resistor seated in the shaft bore of the annular body, wherein the annular body is axially engaged with the resistor. ### Claim 19 (depends on 18) The resistor support housing as recited in claim 18, wherein the resistor package is mechanically between a diode package of the RRA and a disconnect spring, and wherein the resistor package is electrically between the diode package and one or more main field windings of the VFG.