초록 ▼

A motor-driven marine propeller is disclosed for propelling a marine vessel. The propeller includes a hub member driven by the motor and a can member disposed coaxially relative to the hub member the can member having a fore and an aft end. The hub member and the can member define therebetween an an

A motor-driven marine propeller is disclosed for propelling a marine vessel. The propeller includes a hub member driven by the motor and a can member disposed coaxially relative to the hub member the can member having a fore and an aft end. The hub member and the can member define therebetween an annular port for the passage therethrough of a portion of the exhaust generated by the motor. Supports extend between the hub member and the can member for supporting the can member coaxially relative to the hub member and a plurality of blades are secured to and extend from the can member with each of the blades being equidistantly spaced relative to each other. Each of the blades defines a leading and a trailing surface such that the propeller rotates in a direction from the trailing towards the leading surface in normal forward motion. A plurality of notches are defined by the fore end of the can member and each of the notches is disposed adjacent to a trailing surface of an adjacent blade such that the notches cut through filamentary material entangled around the propeller and reduce the generation of eddies during rotation of the propeller.

대표청구항 ▼

A motor driven marine propeller for propelling a marine vessel, said propeller comprising: a hub member driven by the motor; a can member disposed coaxially relative to said hub member, said can member having a fore end and an aft end; said hub member and said can member defining an annular port the

A motor driven marine propeller for propelling a marine vessel, said propeller comprising: a hub member driven by the motor; a can member disposed coaxially relative to said hub member, said can member having a fore end and an aft end; said hub member and said can member defining an annular port therebetween for the passage therethrough of a portion of the exhaust generated by the motor; support means extending between said hub member and said can member for supporting said can member coaxially relative to said hub member; a plurality of blades, each of said blades being secured to and extending from said can member, each of said blades being equidistantly spaced relative to each other; a root portion of each blade disposed adjacent to said can member and extending substantially from said fore end to said aft end of said can member; each of said blades defining a leading surface and a trailing surface such that the propeller rotates in a direction from said trailing surface towards said leading surface in normal forward motion; a plurality of notches with each notch of said plurality of notches formed in said can member and being disposed at said fore end of said can member substantially adjacent to said trailing surface of an adjacent blade such that said plurality of notches cut through filamentary material entangled around the propeller and reduce the generation of eddies during the rotation of the propeller.