Patent Publication Number: US-2003222115-A1

Title: Carpenter&#39;s U-shape stapler troubleshooting mechanism

Description:
BACKGROUND OF THE INVENTION  
       [0001] (a) Field of the Invention  
       [0002] The present invention is related to a carpenter&#39;s stapler trouble shooting mechanism, and more particularly, to one that can rapidly remove jammed staples.  
       [0003] (b) Description of the Prior Art  
       [0004] A stapler by allowing continuous binding to improve speed and efficiency in fixing boards or panels is a carpenter&#39;s tool frequently used in decoration works. Most of the staplers available in the market have a built-in tract accommodate staples, a drive unit to push forward staples and a trigger unit to fire staples one by one. The stapler known for fast and efficient in delivering the staples is a very important tool for a carpenter. However, as the staple is fired by high elasticity to directly enter into a board or panel, the diameter of general staple is limited and the stapler while in use must be held against the board or panel. Therefore, the biggest problem is that the staple could get easily stuck in the outlet of the striking unit as it fails to bear the instantaneous elasticity, thus to prevent continuous use of the stapler.  
       [0005] Naturally, any stuck staple must be removed. To do that, one has to remove the driver unit provided in the rear part of the stapler, empty the tract to remove the jammed staple before reloading the staples and restoring the drive unit into the stapler. Such removal of jammed staples is difficult, interrupting the work, and compromising the convenience and economy of the stapler in general.  
       SUMMARY OF THE INVENTION  
       [0006] The present invention is related to a carpenter&#39;s stapler trouble shooting mechanism, and more particularly, to one that can rapidly remove jammed staples.  
       [0007] It is the primary object of the present invention to provide a carpenter&#39;s U-shape stapler troubleshooting mechanism essentially comprised of a striking unit provided at the front of the stapler containing a plurality of staples; a striking plate provided to the striking unit, and a hole to horizontally eject the staple formed in the center of the striking unit characterized by that: an end cover being provided on the striking unit; the end cover being permitted for longitudinal movement up and down in relation to the striking unit; two flanges relatively to each other extending from a face panel of the face cover; two corresponding troughs being formed between two flanges of the end cover; two resilient plunges being each provided on the striking unit in relation to both sides of the surface of the end cover to hold against the end cover.  
       [0008] The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.  
       [0009] Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.  
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0010]FIG. 1 is a perspective view of a preferred embodiment of the present invention.  
     [0011]FIG. 2 is a sectional view of the preferred embodiment of the present invention.  
     [0012]FIG. 3 is a schematic view showing a troubleshooting performed by the preferred embodiment of the present invention.  
     [0013]FIG. 4 is a perspective view of another preferred embodiment of the present invention.  
     [0014]FIG. 5 is a sectional view of another preferred embodiment of the present invention.  
     [0015]FIG. 6 is a schematic view showing a troubleshooting performed by another preferred embodiment of the present invention.  
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
     [0016] The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.  
     [0017] Referring to FIGS. 1 and 2, a striking unit  11  is provided at the front end of a body  10  accommodating multiple staplers  30 . ...........................An end cover  20  is latched to the striking unit  11  and held by a resilient plunger  16  to prevent the end cover  20  from accidental falling off in the course of work for easy troubleshooting.  
     [0018] As illustrated in FIGS. 4 and 5, in another preferred embodiment of the present invention, a safety push  56  is provided to the striking unit  51  and a restriction hole  53  is each provided on both sides of a staple ejection hole  52  in the striking unit  51  to secure a positioning plate  65 . Two tracks  55  respectively provided on both sides of the striking unit  51  is inserted with an end cover in shape corresponding to that of the striking unit  51 . Two L-shape latches  61  are respectively provided on both sides of the end cover  60  in relation to both of tracks  55 , and a slide channel  62  protruding outwardly is formed on the end cover  60  in relation to the safety push  56 . Two rivet heads  63  are formed on the slide channel  62  to respectively latch in a hole  57  provided to the safety push  57  for the safety push  57  to slide in relation to the end cover.  
     [0019] The positioning plate  65  is provided between the striking unit  51  and the end cover  60 , and a staple trough  66  is formed in the positioning plate  65  in relation to the staple ejection hole  52  in the striking unit. Two restriction pillars  68  are provided on the surface of the positioning plate  65  at where relatively to the striking unit  51  to be respectively inserted into the restriction hole in the striking unit  51  for the positioning plate  65  to be retained by the striking unit  51 . Two resilient plungers  67  are respectively provided on both sides of the positioning plate in relation to the end cover  60  so to secure the end cover  60  to the string unit  51  to constitute a mechanism that allows fast remove of any jammed staples  70 .  
     [0020] When any section of staples  70  is jammed as illustrated in FIGS. 5 and 6, the user simply slides the end cover  60  downward to disengage it from the striking unit  51 , then withdraw the positioning plate  65  out of the striking unit  51  to expose the staple ejection hole  52  in the striking unit  51 , thus to fast remove the jammed staples  70 . When the jammed staples  70  are removed, the positioning plate is inserted into the striking unit  51 , and the end cover  60  is slide upward to latch the striking unit  51  while the resilient plungers of the positioning plate  65  hold against the end cover  60  to prevent it from accidental fall off in the course of work. Therefore, removal of jammed staples is done without requiring to disassembly the rear of the carpenter&#39;s stapler.  
     [0021] It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.  
     [0022] While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.