| 摘要 |
A propeller driven underwater propulsion system for use by a scuba diver, comprising at least one elongate air tank to be carried on the back of the diver, with the longitudinal centerline of the tank residing in a plane approximately perpendicular to the plane of the shoulders of the diver. A propeller is operatively mounted for rotation at a location closely adjacent the rear end of the tank, but it is neither rigidly connected to nor directly supported by the tank. A motor mounting arrangement operatively supports a motor adjacent the tank, with a motor output shaft being operatively connected by a torque transmitting device for continuously supplying rotative power to the propeller, such that the propeller provides a line of thrust at a location directed essentially rearwardly of the tank. Significantly, the angularity of the propeller shaft with respect to the longitudinal centerline of the tank can be readily modified at the behest of the diver so as to enable the line of thrust of the propeller to be tilted away from the longitudinal centerline of the tank and the body of the diver. The selective adjustment of the line of thrust of the propeller effectively compensates for the fact that line of thrust of the propeller is inherently laterally offset from the body of the diver. It is apparent that the selective tilt of the line of thrust of the propeller enables the diver to readily travel in a desired direction underwater. |
