# US 10,767,749 B2 · System and apparatus for interchangeable smart gearbox > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,749 B2 - Document ID: US10767749B2 - Status: Granted - Kind: B2 - Application number: 15/075,738 - Filed: 2016-03-21 - Published: 2016-07-14 - Granted: 2020-09-08 - Earliest claimed: 2013-12-10 - Assignees: Raytheon Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Hung Duong - Web page: https://patentgrep.com/patent/US10767749B2 ## CPC - F16H 57/025: Support of gearboxes, e.g. torque arms, or attachment to other devices - F02C 7/32: Arrangement, mounting, or driving, of auxiliaries - F16H 57/033: Series gearboxes, e.g. gearboxes based on the same design being available in different sizes or gearboxes using a combination of several standardised units - F16H 1/222: {with non-parallel axes} - F16H: GEARING - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) ## Abstract Adapter plates for mounting accessories to a gearbox of a turbine engine are described herein. The adapter plates may be inverted to mount with various equipment, such as a variable frequency generator, oil pump, a fuel pump, a hydraulic pump, an alternator, an electrical generator, and a starter. Gear shafts may comprise splines in a particular form/shape for mating with the gears. The gears may be inverted to expose a desired spline configuration. ## Claims ### Claim 1 A gearbox adaptor for a gearbox comprising: a plate comprising a first side and a second side opposite the first side; wherein the first side is configured for coupling a first gearbox accessory to the gearbox, wherein the second side is configured for coupling a second gearbox accessory to the gearbox, wherein the gearbox adaptor is configured to be inverted such that at least one of the first side or the second side faces the gearbox, wherein the first side comprises a first mounting pattern and the second side comprises a second mounting pattern, wherein the first mounting pattern is configured for mating with a first mounting pattern of the first gearbox accessory, and wherein the second mounting pattern is configured for mating with a second mounting pattern of the second gearbox accessory, wherein, the gearbox adaptor is selectively configured to couple the first gearbox accessory to the gearbox or the second gearbox accessory to the gearbox in response to an inversion of the at least one of the first side or the second side facing the gearbox, wherein the first mounting pattern comprises a first plurality of holes extending only partially into the plate from the first side and wherein the second mounting pattern comprises a second plurality of holes extending only partially into the plate from the second side. ### Claim 2 (depends on 1) The gearbox adaptor of claim 1, wherein the plate is defined by a first annular portion, a second annular portion, a coupling member, and a second coupling member, wherein the first coupling member and the second coupling member are coupled tangentially to each of the first annular portion and the second annular portion, and wherein the gearbox adaptor is marked on at least one of the first coupling member or the second coupling member with an indicator to designate that the first side faces away from the gearbox, wherein each of the first side and the second side comprise a third mounting pattern configured to couple the gearbox adaptor to the gearbox, wherein the third mounting pattern comprises a third plurality of holes extending entirely through the plate between the first side and the second side. ### Claim 3 (depends on 1) The gearbox adaptor of claim 1, wherein at least one of the first side and the second side are configured for coupling via a quick attach/detach attachment. ### Claim 4 (depends on 1) The gearbox adaptor of claim 1, wherein a gear shaft of the first gearbox accessory comprises a first spline to mate with a gear of the gearbox and wherein a gear shaft of the second gearbox accessory comprises a second spline to mate with the gear of the gearbox. ### Claim 5 (depends on 4) The gearbox adaptor of claim 4, wherein the gear comprises a plurality of splines for mating with at least one of the first gearbox accessory and the second gearbox accessory. ### Claim 6 (depends on 5) The gearbox adaptor of claim 5, wherein the first spline is located on a top surface of the gear and the second spline is located on a bottom surface of the gear. ### Claim 7 (depends on 5) The gearbox adaptor of claim 5, wherein the gear is configured to operate in at least one of a clockwise direction or a counter-clockwise direction. ### Claim 8 (depends on 1) The gearbox adaptor of claim 1, wherein the first gearbox accessory and the second gearbox accessory are configured to operate at different respective speeds. ### Claim 9 (depends on 1) The gearbox adaptor of claim 1, wherein at least one of the first gearbox accessory and the second gearbox accessory are at least one of a variable frequency generator, an oil pump, a fuel pump, a hydraulic pump, an alternator, an electrical generator, and a starter.