Flow restrictive edge profile exhibited upon a surface of a fluid propelled/propelling implement

Abstract

A flow restrictive edge profile applied to a fluid propelled/propelling implement and for creating increased driving force as a blade interacts with a fluid medium. An arcuate blade face pattern, including such as a “horseshoe” or modified “U” shape profile, is applied to one or two opposite faces of an oar design, with a deepened and inner extending connecting (arcuate) edge establishing a maximum of resistance (and a corresponding minimization of fluid losses) when traveling through the fluid medium. This in turn maximizes the amount of driving efficiency (e.g. thrust) to the article, such as during it being physically translated through a water medium or acted upon by a wind stream medium. The flow restrictive edge profile also contemplates application into one more blades associated with such as a rotating propeller or a driven windmill.

1 . An article for creating increased efficiency when interacting within a fluid medium, comprising:
 a body having a specified shape and size and exhibiting a surface area; and   a flow restrictive and arcuate profile extending a distance along said surface area including at least an edge portion of said body;   a flow of fluid across said body impacting said profile, thereby restricting flow across said edge portion and increasing a resistance force exerted upon or by the fluid medium in relation to said body.   
   
   
       2 . The article as described in  claim 1 , said body further comprising a paddle exhibiting a planar surface area. 
   
   
       3 . The article as described in  claim 2 , said profile further comprising a modified “U” shape profile including first and second edge extending portions and a recessed and interconnecting central portion. 
   
   
       4 . The article as described in  claim 3 , further comprising said edge extending portions increasing in thickness dimension from forward-most locations approximate a front edge of said paddle to a maximum thickness associated with said interconnecting central portion. 
   
   
       5 . The article as described in  claim 4 , said flow restrictive profile further comprising first and second arcuate interconnecting edges established between said central portion and said first and second edge extending portions, said central portion further comprising a width dimension separating said edge extending portions. 
   
   
       6 . The article as described in  claim 2 , further comprising a second and identically configured profile being applied to an opposite planar surface area of said paddle. 
   
   
       7 . The article as described in  claim 1 , said body further comprising a plurality of individual blades mounted in rotating fashion about a common hub. 
   
   
       8 . The article as described in  claim 7 , each of said blades further comprising an arcuate surface area. 
   
   
       9 . The article as described in  claim 8 , said flow restrictive profile associated with each of said rotating blades further comprising an edge extending configuration initiating at an outermost location and increasing in thickness to an inner contacting location with said hub. 
   
   
       10 . An article for creating increased efficiency when interacting within a fluid medium, comprising:
 a paddle shaped body having a specified shape and size and exhibiting a planar surface area; and   a flow restrictive and arcuate profile extending a distance along said surface area including at least an edge portion of said body;   said body being translated through the fluid medium, such that a flow of fluid initially impacts said surface area and, upon distributing across said body subsequently impacts said profile, restricting flow across said edge portion and increasing a resistance force exerted upon the fluid medium by said body.   
   
   
       11 . The article as described in  claim 10 , said profile further comprising a modified “U” shape profile including first and second edge extending portions and a recessed and interconnecting central portion. 
   
   
       12 . The article as described in  claim 11 , further comprising said edge extending portions increasing in thickness dimension from forward-most locations approximate a front edge of said paddle to a maximum thickness associated with said interconnecting central portion. 
   
   
       13 . The article as described in  claim 12 , said flow restrictive profile further comprising first and second arcuate interconnecting edges established between said central portion and said first and second edge extending portions, said central portion further comprising a width dimension separating said edge extending portions. 
   
   
       14 . The article as described in  claim 10 , further comprising a second and identically configured profile being applied to an opposite planar surface area of said paddle body. 
   
   
       15 . An article for creating increased efficiency when interacting within a fluid medium, comprising:
 a body including a plurality of individual blades mounted in rotating fashion about a common hub; and   a flow restrictive profile associated with an arcuate edge profile of each of said rotating blades, each of said profiles initiating at an outermost location and increasing in thickness to an inner contacting location with said hub;   a flow of fluid impacting each of said rotating blades and, upon distributing across a surface area of each blade, subsequently impacting said edge extending profile, thereby restricting flow across said edge profile and increasing a resistance to a rotating force exerted upon or by the fluid medium in relation to said body.   
   
   
       16 . The article as described in  claim 15 , said body having a specified shape and size and further comprising a multi-bladed and powered propeller for increasing a driving force to the fluid medium. 
   
   
       17 . The article as described in  claim 15 , said body having a specified shape and size and further comprising a freely rotating and multi-bladed windmill exhibiting an increased driven force exerted by the fluid medium.