REVIEW  OF WAVE CONVERTERS & PATENTS

POINT ABSORBER - BUOY ON SPAR WAVE CONVERTER TYPE

This point absorber system is also known as "Donut on a stick" and consists of a floating structure which absorbs energy from all directions through its movements at/near the water surface. It converts the motion of the float relative to the base, which is a spar pole float and may use a heave plate and / or a 2nd counter acting float, into a useable power form. The power take-off system may be: high speed rotary generator, linear generator, liquid and air pump or turbine.

Patents show off  shore systems with Pump, Rotary and Linear Generator PTO devices

 

Image from:  http://nnmrec.oregonstate.edu/wavebob-point-absorber

 

 With Direct Pump:   

With Rotary:                     1897  

With Linear Generator:    

NOTE: to view a complete patent:

     1.  Open Google, search for "Google Patent Search",

     2.  Open this search sub-set & type in Patent Number, or Inventor Name, or General Descriptive Words and a Date, etc.

PATENT EXAMPLES OF THIS TYPE