Single use two-cycle oil packets and method therefor

Abstract

A fuel and oil mixing system for an internal combustion engine-powered tool includes a single use container accommodating a predetermined volume of lubricating oil for mixing with a full tank of fuel in a fuel tank of the tool to yield a mixture of fuel and lubricating oil having a predetermined ratio of fuel to lubricating oil. A method for using the system includes steps of: providing a single use container having a predetermined volume of lubricating oil, supplying the predetermined volume of lubricating oil to a fuel tank of the tool, and filling the fuel tank to capacity with fuel such that the fuel mixes with the predetermined volume of lubricating oil and a resulting mixture of fuel and lubricating oil has a predetermined ratio of fuel to lubricating oil.

1 . A fuel and oil mixing system for an internal combustion engine-powered tool, the system comprising: 
 a predetermined volume of lubricating oil for mixing with a full tank of fuel in a fuel tank of the tool to yield a mixture of fuel and lubricating oil having a predetermined ratio of fuel to lubricating oil; and    a single use container for accommodating said predetermined volume of lubricating oil.    
   
   
       2 . The fuel and oil mixing system of  claim 1 , wherein the predetermined ratio of fuel to lubricating oil is selected from the group consisting of 25:1, 32:1, 40:1 and 50:1.  
   
   
       3 . The fuel and oil mixing system of  claim 1 , wherein the single use container comprises first and second flexible sheets, a perimeter of the first sheet being bonded to a perimeter of the second sheet.  
   
   
       4 . The fuel and oil mixing system of  claim 1 , wherein the single use container further comprises means for destructively opening the single use container.  
   
   
       5 . The fuel and oil mixing system of  claim 1 , wherein the lubricating oil is two cycle engine lubricating oil.  
   
   
       6 . A fuel and oil mixing system for an internal combustion engine-powered tool, the system comprising: 
 a predetermined volume of lubricating oil; and    means for providing said predetermined volume of lubricating oil to a fuel tank of the tool such that when the fuel tank is full, a resultant mixture of fuel and lubricating oil has a predetermined ratio of fuel to lubricating oil.    
   
   
       7 . The fuel and oil mixing system of  claim 6 , wherein the predetermined fuel to lubricating oil ratio is selected from the group consisting of 25:1, 32:1, 40:1 and 50:1.  
   
   
       8 . The fuel and oil mixing system of  claim 6 , wherein the means for providing said predetermined volume of lubricating oil comprises a single use container.  
   
   
       9 . The fuel and oil mixing system of  claim 8 , wherein the single use container comprises first and second flexible sheets, a perimeter of the first sheet being bonded to a perimeter of the second sheet.  
   
   
       10 . The fuel and oil mixing system of  claim 8 , wherein the single use container further comprises means for destructively opening the single use container.  
   
   
       11 . The fuel and oil mixing system of  claim 6 , wherein the lubricating oil is two cycle engine lubricating oil.  
   
   
       12 . An internal combustion engine powered tool having a fuel and oil mixing system, the tool comprising: 
 an internal combustion engine operating on a mixture of fuel and oil having a predetermined ratio of fuel to lubricating oil, R;    a fuel tank in fluid communication with the internal combustion engine, said fuel tank having a fuel capacity, V c ;    a predetermined volume of lubricating oil, V o , such that the following equation is satisfied:              R   =         V   c     -     V   o         V   o         ;           a single use container enclosing said predetermined volume of lubricating oil, V o .    
   
   
       13 . The internal combustion engine-powered tool of  claim 12 , wherein the predetermined ratio of fuel to lubricating oil is selected from the group consisting of 25:1, 32:1, 40:1 and 50:1.  
   
   
       14 . The internal combustion engine-powered tool of  claim 12 , wherein the fuel capacity, V c , of the fuel tank is not equal to one gallon.  
   
   
       15 . The internal combustion engine-powered tool of  claim 12 , wherein the fuel capacity, V c , of the fuel tank is less than one gallon.  
   
   
       16 . The internal combustion engine-powered tool of  claim 12 , wherein the single use container comprises first and second flexible sheets, a perimeter of the first sheet being bonded to a perimeter of the second sheet.  
   
   
       17 . The internal combustion engine-powered tool of  claim 12 , wherein the single use container further comprises means for destructively opening the single use container.  
   
   
       18 . The internal combustion engine-powered tool of  claim 12 , wherein the lubricating oil is two cycle engine lubricating oil.  
   
   
       19 . A method for providing a fuel and oil mixture to an internal combustion engine powered tool comprising steps of: 
 providing a single use container having a predetermined volume of lubricating oil;    supplying the predetermined volume of lubricating oil to a fuel tank of the tool; and    filling the fuel tank to capacity with fuel such that the fuel mixes with the predetermined volume of lubricating oil and a resulting mixture of fuel and lubricating oil has a predetermined ratio of fuel to lubricating oil.    
   
   
       20 . The method of  claim 19 , wherein the predetermined ratio of fuel to lubricating oil is selected from the group consisting of 25:1, 32:1, 40:1 and 50:1.  
   
   
       21 . The method of  claim 19 , wherein the single use container comprises first and second flexible sheets, a perimeter of the first sheet being bonded to a perimeter of the second sheet.  
   
   
       22 . The method of  claim 19 , wherein the single use container further comprises means for destructively opening the single use container.  
   
   
       23 . The method of  claim 19 , wherein the lubricating oil is two cycle engine lubricating oil.