Patent Publication Number: US-2007101830-A1

Title: Leverage master carpenter manner

Description:
REFERENCE CITED  
     U.S. Patent Documents  
     
       
         
           
               
               
               
               
               
             
               
                   
                   
               
               
                   
                   
               
             
            
               
                   
                   724,542 
                 Apr. 7, 1903 
                 Brownell 
                 254/26R 
               
               
                   
                 1,089,234 
                 Mar. 3, 1914 
                 Leslie 
               
               
                   
                 1,531,014 
                 Mar. 24, 1925 
                 Maclure 
               
               
                   
                 1,550,405 
                 Aug. 18, 1925 
                 Williams 
               
               
                   
                 2,553,102 
                 May 15, 1951 
                 McLean 
               
               
                   
                 2,643,854 
                 Jun. 30, 1953 
                 Johnson 
                 254/27 
               
               
                   
                 2,657,903 
                 Nov. 03, 1953 
                 Johnson 
                 254/26E 
               
               
                   
                 3,885,772 
                 May 27, 1975 
                 Balkus, Jr. 
                 254/26 
               
               
                   
                 4,216,808 
                 Aug. 12, 1980 
                 Royce 
               
               
                   
                 4,482,132 
                 Nov. 13, 1984 
                 Lamansky 
               
               
                   
                 5,159,858 
                 Nov. 03, 1992 
                 Gensen 
               
               
                   
                 5,249,776 
                 Oct. 05, 1993 
                 Johnson 
               
               
                   
                 5,622,352 
                 Apr. 22, 1997 
                 Swindoll 
               
               
                   
                 6,032,927 
                 Mar. 7, 2000 
                 Atkinson 
               
               
                   
                 6,866,247 B2 
                 Mar. 15, 2005 
                 Thompson 
               
               
                   
                   
               
            
           
         
       
     
     BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to hammers and more specifically pertains to a carpenter&#39;s claw hammer that significantly increased leverage during the nail extraction operation.  
      2. Description of the Prior Art  
      Existing patent hammers designed to facilitate the extraction of various length nails do so by utilizing more than one claw or adding several different devices to the current standard hammer. The result of these types of designs is problematic in that they require maintenance and are subject to breakage (examples cited but not limited to U.S. Pat. Nos. 5,249,776 3,885,772 2,657,903 2,553,102).  
      Most hammers today use a single claw opposite the striking head to aid in the removal of nails offering different degrees of operability. Carpenter hammers or straight claw hammers, for example, are well known to have difficulty removing long nails ( 10 D,  12 D,  16 D,  20 D); the extracting capability varies between 1 inch to 1½ inches until the hammers striking head reached the surface preventing further leverage from taking place, thereby leaving a large residual of the nail unextracted.  
      Occasionally, as a second step for nail prying, the claw is backed out of the nail and moved to a second claw or device (examples cited but not limited to U.S. Pat. Nos. 6,866,247 B2 6,032,927 5,622,352 5,159,858 4,482,132 1,550,405). Curved claw hammers have similar problems, although the curvature of the claw yields for extra extracting distance, it tends to force a bend in the nail and displacing the removal force sideways in the direction of the hammer causing increased friction resulting in leverage loss.  
      Commonly know hammers also have additional problems while removing long nails or using the claw as a prying tool. The fulcrum point is very low forcing the user to utilize a block of wood or some other material placed directly below the top of the hammer&#39;s handle housing in order to elevate the point of support in which the hammer pivots; therefore, increasing leverage allowing longer claw rotation. Although this technique is often utilized the hammers position may become unstable and may cause the hammer to slip and possible cause damage to the surface being worked on or even bodily harm.  
      In many cased a person utilizing a standard hammer while working on roofs or other jobs that require the user to climb a ladder or scaffolding conventional hammers lack the necessary leverage for the tack at hand.  
      Generally, this practice significantly compromised the users safety since in order to complete the task at hand the person using the equipment needs to often use both hands letting go of the ladder or scaffolding, thereby facing possible injury or even death as a result of a fall.  
     SUMMARY OF THE INVENTION  
      A hammer having a conventional head or flat top portion, when used to extract nails of various lengths can not completely extract the nails before the nail binds or bends in the material from which it is being removed.  
      The present invention relates to claw hammers, specifically those designed to improve their prying ability in order to remove long nails of other surface- affixed materials. This invention provides increased leverage by elevating the point of support on which the hammer rotates while in use as a prying elongation of the tip of the hammer in the shape of a semi-circle or “camel back” depending on the prying elevation distance needed. In addition, the curvature and length of the claw are slightly larger than the conventional hammer.  
      The objective of the current invention is to provide a carpentry tool that delivers increased leverage and greater extraction capabilities while prying long nails or other materials and at the same time provides striking surface for hammering needs.  
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The elongated, ovalized head in  FIG. 1  has an ovalized, provection which allows a vertical upward prying motion as shown in  FIGS. 2, 3  and  4  with extremely increased leverage over a conventional hammer. 
    
    
       FIG. 1  also describes the elements of a traditional hammer other elements  1 , 2 , 3 , 4  and  5 .