Patent ID: 8808044
Filing Date: 2014-08-19
Classification: B63H,F04D

Abstract:
1. A portable propulsion system for a watercraft, comprising: a telescoping shaft having a prop end portion, a drive end portion, and a rotational axis extending from the prop end portion to the drive end portion; a propeller connected to the prop end portion of the telescoping shaft; a driver removably connected to the drive end portion of the telescoping shaft, the driver being configured to rotate the propeller via rotation of the telescoping shaft about the rotational axis to propel the watercraft; a first section of foam tubing disposed around the telescoping shaft distal the propeller and proximal the drive end portion; and a second section of foam tubing disposed around the telescoping shaft proximal the propeller and distal the drive end portion, the first and second sections of foam tubing extending along the rotational axis and being spaced apart from one another by a gap having a length; wherein the portable propulsion system is operable between an extended position and a collapsed position along the rotational axis, the extended position corresponding to the prop end portion being further away from the drive end portion than when in the collapsed position.