Abstract:
A tool for use with other tools to increase their leverage. The tool has a handle with a curved extension connected at an end and the handle has a projection pin. The extension has a slot which receives a projection that can slide along the extent of the slot.

Description:
Applicant claims priority of Provisional application Ser. No. 61/195,929, filed Oct. 14, 2008. 
    
    
     BACKGROUND OF THE INVENTION 
     This invention relates, in general, to tools, and, in particular, to a tool which can exert additional leverage on other tools. 
     DESCRIPTION OF THE PRIOR ART 
     In the prior art various types of devices have been proposed. For example, U.S. Pat. No. 6,848,692 to Cooper discloses a leverage tool that has two fixed pins to apply leverage against a plurality of tools. 
     U.S. Pat. No. 4,104,935 to Stoops discloses a leverage tool that has a pair of fixed pins, one of which has a socket wrench fitting to apply leverage against a plurality of tools. 
     U.S. Pat. No. 2,725,773 to Anacker discloses a leverage tool with a plate secured to a handle by a plurality of fixed studs to apply leverage against a plurality of tools. 
     U.S. Pat. No. 1,511,738 to Lownsberry discloses an extension handle for wrenches having two fixed, opposing clips and a fixed pin. 
     U.S. Pat. No. 6,978,703 to Whitehead et al discloses a cam gear holding wrench with two arm, one of which is slidable with respect to the other, and the arms have transverse rods projecting therefrom. 
     SUMMARY OF THE INVENTION 
     The present invention is directed to a tool for use with other tools to increase their leverage. The tool has a handle with a curved extension connected at one end and the handle has a projection pin. The extension has a slot which receives a projection that can slide along the extent of the slot. 
     It is an object of the present invention to provide a new and improved tool to be used in combination with a second tool to increase the leverage exerted by the second tool. 
     It is an object of the present invention to provide a new and improved tool to be used in combination with a second tool which can be used with a variety of second tools. 
     It is an object of the present invention to provide a new and improved tool to be used in combination with a second tool and the tools can still be used in confined spaces. 
     It is an object of the present invention to provide a new and improved tool to be used in combination with a second tool in which the tool exerts an automatic tightening pressure on the other tool. 
     These and other objects and advantages of the present invention will be fully apparent from the following description, when taken in connection with the annexed drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of the present invention. 
         FIG. 2  is a perspective view of the present invention in use with a second tool. 
         FIG. 3  is a perspective view of the present invention in use with another tool. 
         FIG. 4  is a perspective view of the present invention with a detachable handle. 
         FIG. 5  is a perspective view of the present invention with a clip to hold the movable pin. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is chosen and described to best explain the invention so that others, skilled in the art to which the invention pertains, might utilize its teachings. 
     Referring now to the drawings in greater detail,  FIG. 1  shows a perspective view of the leverage tool  1  of the present invention. The tool has a handle portion  2  with a first end  17  and a curved arm portion  3  connected adjacent a second end  18  of the handle. It is important that the arm  3  be curved as this shape will allow the tool to be inserted into spaces a straight arm would not fit. Also, it allows easier maneuvering of the tool in use. A first pin or anchor  6  is positioned adjacent the second end  18  of the handle. The first pin is fixed with respect to the handle, however, the pin does not have to be permanently fixed. It can be made removable as long as it does not move during operation of the tool. 
     The curved arm portion  3  has a curved slot  4  that generally follows the curvature of the arm. The slot  4  has a series of teeth  5  or lands and grooves positioned along at least one side of the slot  4 . A pin or anchor  7  is positioned in the slot in any conventional manner. The pin  7  is movable in the slot and will engage the teeth  5  when pressure is applied sideways against the pin  7 . The engagement between the teeth  5  and the pin  7  will lock the pin in a selected position within the slot  4 . 
       FIG. 2  shows the present invention used with a conventional wrench  8 . The wrench is the type with open ended slots at either end, however, the invention is not limited to use with only this type of wrench. The invention can be used with any type of wrench. In order to use the invention, the wrench is positioned on the tool so the end which will not engage a nut or bolt is adjacent the fixed pin  6 , The moveable pin  7  is moved along the slot  4  until it engages the wrench  8  on the side opposite the pin  6 . Then the opposite end of the wrench can be engaged with a nut or bolt (not shown) and the handle  2  can be rotated. The rotation of the handle will force the pin  7  against the teeth  5  which will lock the pin  7  in position along the slot so it will not slip, and, at the same time lock the wrench between the two pins  6 ,  7 . The length of the handle  2  will be effectively added to the length of the wrench, thereby increasing the amount of leverage the wrench can apply to a nut or bolt. 
       FIG. 3  shows the present invention being used with a pair of conventional pliers  9 . Again, the invention is not limited to use with only this type of pliers. The invention can be used with any type of pliers. The pliers are inserted into the present invention in the same manner that the wrench  8  of  FIG. 2  was. It should be noted that the moveable pin  7  is now located at the end of the slot remote from the pin  6 . This is due to the shape of the pliers. The handles of the pliers are wider than the handle of the wrench  8 , therefore, the pins will have to be placed further apart to receive the handles of the pliers therebetween. Also, as the handle  2  is rotated the pressure of the pins  6 ,  7  will lock the jaws of the pliers around the object to be turned by the pliers (such as a nut or bolt). Therefore, the user will not have to be concerned with holding the pliers on the object to be turned and rotating the present invention at the same time. All of his efforts can be applied to turning the tool. In all other respects, the invention will operate in the same manner as it does with the wrench  8 , 
       FIG. 4  shows the present invention in which the handle  2 ′ is made as a separate piece. An aperture  18  is placed in one end of the handle  2 ′ and can be secured to the rest of the tool by any conventional fastener such as bolt  17 . By making the handle as a separate piece different length handles can be supplied for different purposes as a kit. The curved arm  3 ′, the fixed pin  6 ′, the slot  4 ′ and the movable pin  7 ′ all will operate in the same manner as the  FIG. 1  device.  FIG. 4  also has a clip  10  which will hold the movable pin  7 ′ against the teeth (not shown in  FIG. 4 ) in the slot  4 ′. 
     The clip  10  is shown in exploded view in  FIG. 5 . The clip is essentially U-shaped with two legs  11  extending from the base. Each leg has an aperture  12  extending therethrough. The pin  7 ′ has a head with a threaded stem  13  extending from the head which threads into the body  15 . At the opposite end of the body is a projection  14  which is internally threaded. Another pin  7 ′ with another threaded stem  13  is threaded into the projection  14 . The clip has a spring  19  positioned adjacent the base in any conventional manner. 
     The clip is placed onto the curved arm  3 ′ as shown in  FIG. 4 . The threaded stem  13  is passed through the aperture  12  on one leg  11  and threaded into aperture  16  on the body  15 . The projection  14  will align with the aperture  12  in the other leg  11  and the other threaded stem  13  will be threaded into the projection  14  which will hold the clip onto the pin  7 ′ and the spring  19  against the outside of the curved arm  3 ′. In this manner the spring  19  will always bias the pin against the teeth  5 . In order to move the pin  7 ′ a user will have to press the pin against the bias of the spring  19  in order to separate the projection  14  from the teeth. Once the pin in its desired position, the user will release the clip and the spring will force it against the teeth  5  which will hold the pin in the desired position. 
     Although the Leverage Tool and the method of using the same according to the present invention has been described in the foregoing specification with considerable details, it is to be understood that modifications may be made to the invention which do not exceed the scope of the appended claims and modified forms of the present invention done by others skilled in the art to which the invention pertains will be considered infringements of this invention when those modified forms fall within the claimed scope of this invention.