Resources Contact Us Home
Airboat systems and methods for increasing engine efficiency while reducing torque and noise

Image Number 9 for United States Patent #5807149.

An airboat propelling system is provided wherein a propeller is rotated by a hollow driven shaft. A further embodiment is provided wherein two propellers are rotated in opposite directions by counter-rotating coaxial hollow driven shafts. Floating stiffener bearings positioned between the coaxial hollow driven shafts suppress flexion and protect the opposing surfaces of the shafts. These innovative techniques permit a minimization of size and weight, as well as a reduction in rotational speed of the propellers, maximizing efficiency and decreasing noise.

  Recently Added Patents
Electrostatic charger and image forming apparatus
Metal melting apparatus and method for melting metal
Restarting event and alert analysis after a shutdown in a distributed processing system
Assigning runtime artifacts to software components
Controlling access to resources on a network
Method and apparatus for generating images using a color field sequential display
  Randomly Featured Patents
Process for the production of carboxylic acid esters
Multilayer printed circuit board for high-speed differential signal, communication apparatus, and data storage apparatus
High-frequency module and communication apparatus using the module
Ink roller vibrator mechanism
Semiconductor test system, semiconductor test method, method of wiring pattern formation and semiconductor integrated circuit
Modern sports coupe car body
Motion vector detector circuit
Stacker for plate members, method for stacking plate members, and stacked plate members
Intelligent wireless mobile device for use with casino gaming table systems
Device for carrying toddlers and small children on an adult wearer's back