# US 2014/0154076 A1 · Device for supplying and distributing fluid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154076 A1 - Document ID: US20140154076A1 - Status: Published application - Kind: A1 - Application number: 14/093,779 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Snecma - Applicants: Snecma - Inventors: Olivier BELMONTE; Augustin Curlier; Mathieu Perrier - Web page: https://patentgrep.com/patent/US20140154076A1 ## CPC - B64C 11/38: fluid, e.g. hydraulic - B63H 3/02: actuated by control element coaxial with propeller shaft, e.g. the control element being rotary {(B63H3/002 takes precedence, fluid actuated B63H3/081)} - B64C 11/308: {automatic} - B64C 11/40: automatic - F01D 7/00: Rotors with blades adjustable in operation; Control thereof (for reversing F01D1/30) - B64D 2027/005: {Aircraft with an unducted turbofan comprising contra-rotating rotors, e.g. contra-rotating open rotors [CROR]} - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - B64C: AEROPLANES; HELICOPTERS - B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The device (18) is intended to supply a rotating linear displacement actuator capable of controlling the pitch of the blades of a propeller, according to separate operating states, from a rotary power assembly, the device being arranged so as to be located between the power assembly and the actuator, along a longitudinal axis (A), and being connected in rotation therewith. According to the invention, the device comprises means (20) for supplying fluid interacting with said power assembly and defining as many supplies as there are operating states of the actuator, and a fluid distributor (21) to which said supplies are connected and having separate channels for transporting the fluid in the direction of the actuator according to the operating states, by means of tubular equipment (25) connected to the distributor. ## Claims ### Claim 1 Device for supplying and distributing fluid for a rotating linear displacement actuator capable of controlling the pitch of the blades of a propeller, according to separate operating states, by means of a rotary power assembly, said device being arranged so as to be located between the power assembly and the actuator, along a longitudinal axis, and being connected in rotation therewith, characterised in that it comprises: means for supplying fluid comprising radial arms having internal passages capable of interacting with said power assembly and defining as many supplies as there are operating states of the actuator, a fluid distributor to which the internal passages of the arms of said supplies are connected, and having channels capable of separately transporting the fluid in the direction of the actuator according to the operating states, and tubular equipment connected coaxially to the distributor and forming at least two independent chambers connected to separate lateral channels of the distributor, and one or the other of which are capable of being in communication with said actuator for two operating states thereof, said distributor comprising another central channel, along the common axis, capable of being in direct communication with a supply tube of the actuator for another operating state thereof. ### Claim 2 (depends on 1) Device according to claim 1, wherein the radial arms are fixed to the distributor, and the internal passage of each of said arms ends in an input cavity in connection with a supply tube passing through the power assembly, and through an output cavity leading into the distributor. ### Claim 3 (depends on 2) Device according to claim 2, wherein the channels of the fluid distributor comprise compartments for receiving the output cavities of the radial arms, each compartment and the associated output cavity being interconnected in a sealing manner by a connecting end piece. ### Claim 4 (depends on 1) Device according to claim 1, wherein the tubular equipment is cylindrical, along the common axis, and fixed, at one end, to one of the transverse faces of the distributor, facing towards the actuator, while the supply means are fixed to the other transverse face facing towards the power assembly. ### Claim 5 (depends on 1) Device according to claim 1, wherein the tubular equipment comprises two external and internal assembled tubular sleeves, defining between them an annular space in connection with one of the channels of the distributor, and surrounding a tubular control shaft of the actuator by forming, between said actuator and the internal sleeve, the two independent chambers, one chamber in connection with the annular space and the corresponding channel, and the other chamber in connection with a separate channel of the distributor. ### Claim 6 (depends on 5) Device according to claim 5, wherein one or the other of the two chambers are capable of being put in communication with an annular chamber located between the control shaft of the actuator and the supply tube of the actuator, through orifices made in the wall of said shaft. ### Claim 7 (depends on 5) Device according to claim 5, wherein the two chambers are adjacent and mutually separated by a transverse partition wall emanating from the internal sleeve or the control shaft. ### Claim 8 (depends on 4) Device according to claim 4, wherein, at the end of the equipment opposite the end fixed to the distributor, the two sleeves are joined together by a connecting ring held axially in position. ### Claim 9 (depends on 1) System for adjusting the pitch of the blades of a turbine engine propeller, of the type comprising a rotary linear displacement actuator, driven in rotation by a power assembly and supplied by a device for supplying and distributing fluid according to the different operating states of the propeller, and a transmission mechanism connecting the actuator to the blades of the propeller to be controlled, characterised in that the device for supplying and distributing fluid is as defined according to claim 1, being arranged between the power assembly and the actuator and connected in rotation therewith.