Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Reactor core of liquid metal cooled reactor
Deposition apparatus and method for manufacturing organic light emitting diode display using the same
Monitoring and correcting upstream packet loss
Badge or pin
Roll of continuous web of optical film laminate and production method therefor
Injection molding method and injection molding machine
Means to securely fixate pacing leads and/or sensors in vessels
  Randomly Featured Patents
Apparatus for preparing sample solution for infrared spectrophotometer and method of analyzing sample solution
Coupling between two parts which are movable with respect to each other
Pliers for plastic radiator tank replacement
Blood pressure estimating apparatus and method
Rose plant--74-2179-18
Controlled-flow fiber casting
Method for selecting synchronous codes in a mobile communication synchronic system
Transformer fault analyzer
Method of forming moire contour lines
Single-lock plating system