# US 9,039,378 B2 · Marine propeller structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,378 B2 - Document ID: US9039378B2 - Status: Granted - Kind: B2 - Application number: 13/286,587 - Filed: 2011-11-01 - Published: 2012-05-10 - Granted: 2015-05-26 - Earliest claimed: 2010-11-05 - Applicants: M. Nevres Ulgen - Inventors: M. Nevres Ulgen - Web page: https://patentgrep.com/patent/US9039378B2 ## CPC - B63H 1/26: Blades - B63H 1/20: Hubs; Blade connections - 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) ## Abstract A marine propeller has at least two blades each having a body, a vane and connection members that enable the blades to be fixed together. The blades are formed with a one-piece vane and the bodies are attached to one another and with the bodies form the central hub of the propeller that may be fitted on a ship's shaft after mounting. ## Claims ### Claim 1 A propeller (1) comprising: at least three blades (2) each having a body (3) of a spiral form such that each body (3) when mounted to one another form a propeller hub; each blade including a vane (5) extending outwardly from each body (3), wherein each body (3) comprises two opposite spiral first side surfaces (7) and a front surface and a back surface; each blade being a single piece with the vane and body; wherein each body (3) comprises at least two connection holes passing parallel to an axis of rotation of the propeller and passing through the front surface, first side surface and back surface of the body; each blade body being positioned with another of said blade bodies against the spiral first side surfaces such that the blade bodies so positioned form a segmented hub; and a plurality of connection members (6) each passing through a connection hole through the front surface, first side surface and back surface of said bodies such that the segmented hub is secured together. ### Claim 2 (depends on 1) The propeller according to claim 1, wherein each body (3) comprises a male groove (11) on one first side surface (7) and a female groove (10) on the opposite first side surface (7). ### Claim 3 (depends on 1) The propeller according to claim 1, wherein each body (3) comprises an inner surface having a form such that when all bodies (3) are mounted to one another, said inner surface has a conical cylindrical form. ### Claim 4 (depends on 1) The propeller according to claim 1, wherein each body (3) comprises a front surface (8) and a back surface (9), each body having two holes for receiving connection members (6). ### Claim 5 (depends on 1) The propeller according to claim 1, wherein the propeller has 6 blades. ### Claim 6 (depends on 1) The propeller according to claim 1, further comprising a plurality of front face holes and a plurality of side surface holes, wherein connection members (6) attach the blades (2) to one another by being fitted into the front face holes and the side surface holes. ### Claim 7 (depends on 1) The propeller (1) according to claim 1, wherein said connection members (6) are bar-shaped. ### Claim 8 (depends on 3) The propeller (1) according to claim 3, wherein bodies (3) which are located on a side of the blade (2) facing a shaft of a ship to which said propeller would be attached is passed through across the propeller (1) and extend along the inner surface of a vane (5). ### Claim 9 (depends on 8) The propeller (1) according to claim 8, wherein said bodies (3) when assembled define a hollow conical cylinder. ### Claim 10 (depends on 5) The propeller (1) according to claim 5, wherein said body (3) has front and back surfaces (8, 9) in a planar structure. ### Claim 11 (depends on 10) The propeller (1) according to claim 10, wherein said propeller includes a front and back and center section, wherein front and back surfaces (8, 9) form a circle ring on each center section of the front and the back of the propeller (1) when the blades (2) are attached to one another. ### Claim 12 (depends on 1) The propeller (1) according to claim 1, wherein each said body (3) has first side surfaces (7) in a spiral form at a desired pitch angle. ### Claim 13 (depends on 5) The propeller (1) according to claim 5, wherein each body (3) includes four side surface holes at each first side surface (7) thereof. ### Claim 14 (depends on 1) The propeller (1) according to claim 1, each body (3) comprising two front face holes and two side surface holes for engagement to each connection member (6). ### Claim 15 (depends on 1) The propeller (1) according to claim 1, wherein each said connection member (6) affixes two blades (2) to one another by entering a front face hole or a side surface hole on a surface of the body (3) and leaving a front face hole or a side surface hole on the other surface thereof. ### Claim 16 (depends on 12) The propeller (1) according to claim 12, wherein blade (2) recesses arising from the pitch angle of the first side surface (7) are mounted to an adjacent blade (2). ### Claim 17 (depends on 10) The propeller (1) according to claim 10 further comprising a plurality of front face holes and a plurality of side surface holes, wherein the blade (2) is fixed to adjacent blades (2) with the connection members (6) being thrust into the body (3) vertically through the front face holes (4) on the front surface (8) of the body (3) thereof. ### Claim 18 (depends on 5) The propeller (1) according to claim 5, further comprising a plurality of front face holes and a plurality of side surface holes, wherein connection members (6) fix the blades (2) to one another both by fitting into the front face holes (4) on the body (3) of the blade (2) mounted and into the side surface holes (41) on an inner surface of an adjacent blade (2) where said blade (2) is mounted. ### Claim 19 (depends on 4) The propeller (1) according to claim 4, wherein two sleeves (12) are closed over the front and back surfaces (8, 9) of the bodies (3). ### Claim 20 (depends on 1) The propeller (1) according to claim 1, wherein the body (3) includes at least one female groove (10), or at least one male groove (11), or at least one female groove and at least one male groove on the first side surfaces (7) thereof. ### Claim 21 (depends on 20) The propeller (1) according to claim 20, wherein said male grooves (11) and female grooves (10) comprise a male groove (11) on the first side surface (7) of a body (3) corresponding to a female groove (10) on the first side surface (7) of the adjacent blade whereto it will be attached. ### Claim 22 (depends on 21) The propeller (21) according to claim 21, wherein said body (3) comprises at least one female groove (10) on one second side surface (71) and at least one male groove (11) on one third side surface (72). ### Claim 23 (depends on 22) The propeller (1) according to claim 22, wherein the body (3) comprises at least one channel-shaped female groove (10) crossing the body (3) on one second side surface (71), and at least one protrusion-shaped male groove (11) crosses one third side surface (72) of the body (3).