Abstract:
A corkscrew has an external tubular body having a mouth forming a support over a bottle, a spiral introducible into a cork when rotating the corkscrew, support means for the spiral, and actuating means for raising the spiral and removing the cork, the support means including a tubular part housed in the external tubular body so as to be longitudinally displaceable.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    The present invention relates to corkscrews.  
           [0002]    More particularly, it relates to a corkscrew which has an external tubular body provided with a mouth forming the bottle support means, a metallic spiral to be introduced in the cork to pull the corkscrew, support means for the metallic spiral and actuation means to achieve the elevation of the metallic spiral introduced in the cork and the extraction of the cork.  
           [0003]    At present, different types of corkscrews are known, having a as a common shape: a foldable metallic spiral fitted on a handle or chassis intended to facilitate its grip and actuation.  
           [0004]    In these corkscrews, the metallic spiral is fitted over the central area of the handle. The handle includes a foldable arm at one of its ends, which forms a support over the bottle mouth in order to allow the corkscrew to act like a lever over the metallic spiral during the extraction of the cork.  
           [0005]    The arm may have an end support area or several longitudinally separated support areas, which are used selectively in the different stages of cork extraction.  
           [0006]    The use of these corkscrews requires the application of a substantial force in order to remove the cork and the use of both hands, one hand to apply the pushing force over the handle and the other hand to keep the extreme arm over the bottle.  
         SUMMARY OF THE INVENTION  
         [0007]    It is therefore an object of the present invention to provide a corkscrew which avoids the disadvantages of the prior art.  
           [0008]    More particularly, it is an object of the present invention to provide a corkscrew which permits extraction of corks with a minimum effort and simple operation, and has a reduced size depending only on the length of the metallic spiral.  
           [0009]    In keeping with these objects and with others which will become apparent herein after, one feature of present invention resides, briefly stated, in a corkscrew which has a tubular body on which an internal tubular part is housed provided with longitudinal travel capability but without rotation capability, with a metallic spiral fitted on the internal tubular part also with longitudinal travel capability but without rotation capability.  
           [0010]    Both the external tubular body and the internal tubular part have some lateral planes intended to prevent its relative rotation.  
           [0011]    In its back area, the metallic spiral has a reinforcement with a transverse pin that is guided with its ends in some longitudinal openings defined in the tubular part.  
           [0012]    The metallic spiral may have an opening with a diameter significantly greater than that of the pin fastening it, in order to permit a lateral mobility when it is released from the tubular body through which it passes.  
           [0013]    The metallic spiral has a leading portion permanently protruding through the leading end of the tubular part, allowing its introduction in the cork on rotating the corkscrew once the tubular body mouth is supported over the bottle.  
           [0014]    The metallic spiral tends to be displaced toward the back area of the tubular part by the action of a spring that is resiliently deformable as said metallic spiral penetrates in the cork.  
           [0015]    At the sides of the longitudinal openings, the internal tubular part has graduated scales permitting to know the penetration of the metallic spiral in the cork, depending on the position of the pin of the metallic spiral. In this way, the metallic spiral is prevented from crossing the entire cork.  
           [0016]    In order to facilitate cork extraction, this corkscrew has a foldable lateral lever associated to the back end of the intermediate part. Over the intermediate area of this lever, a blade for the crown cork lifting of bottles and an arm which has to be detached from the internal surface of said part by the action of a torsion spring, are fitted by means of a common rotation shaft.  
           [0017]    The purpose of this lever is to lean with its end over a teething defined in the lateral surface of the tubular body, determining the elevation of the upper end of the lever and hence, the internal tubular part, each time the lever is pressed towards the lateral surface of the external tubular body.  
           [0018]    When pressing and releasing the lever repeatedly, the arm leans on the successive teeth of the tubular body until achieving total removal of the cork.  
           [0019]    Laterally, the tubular body has means permitting the lever to be retained in the folded or closed position when not being used. The tubular body also has a lateral tooth to remove crown type corks.  
           [0020]    According to the invention, the back end of the internal tubular part is closed by means of a cigar cutter, which moreover acts as a joining component between said part and the aforementioned foldable lever.  
           [0021]    The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.  
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0022]    [0022]FIG. 1 is a view showing a profile view of the corkscrew in accordance with the present inventor, not in use;  
         [0023]    [0023]FIG. 2 is a view showing an elevation of the corkscrew in accordance with the present inventor, of the previous figure;  
         [0024]    [0024]FIG. 3 is a view showing an elevation of the corkscrew in accordance with the present inventor, in which the metallic spiral may be seen, introduced in the cork to be removed and the lateral lever released from the hooking means of the tubular body. In this figure, the lever has been partially sectioned in order to facilitate the observation of the torsion spring acting over the former and over the arm associated to fit; and  
         [0025]    [0025]FIG. 4 is a view showing an elevation of the corkscrew in accordance with the present inventor, partially sectioned and an intermediate stage of cork extraction.  
     
    
     DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0026]    As may be seen in the drawings, the improved corkscrew object in accordance with the present invention has a tubular body  1  provided with a mouth  11  intended to be supported over the bottle to be uncorked. Inside said tubular body a tubular part  3  is housed, in which a metallic spiral is fitted.  
         [0027]    Both the tubular body  1  and the tubular part  3  laterally have planes  12  and  31  intended to prevent the rotation of the tubular part  3  with respect to the body  1 . The tubular part  3  is closed at the back end by means of a cigar cutter  5  fixed to the former by means of a pin  51 .  
         [0028]    The metallic spiral  4  has a reinforcement  41  at its back end, provided with a transverse pin  42  whose ends protrude through some longitudinal openings  32  defined in the tubular part  3 . The metallic spiral  1  has a leading portion that permanently protrudes from the rear end of the tubular part  3 .  
         [0029]    The metallic spiral  4  may be removed longitudinally through the inside of the tubular part  3 . Its run is limited by the contact of the pin  42  with the forward and back ends of the openings  32 . The metallic spiral  4  tends to be moved towards the back area of the tubular part  3  by the action of a spring  6  whose ends are hooked to the pin  42  and the pin  51 .  
         [0030]    The displaceable assembly of the metallic spiral  4  over the tubular part  3  permits that once the tubular body  1  mouth  12  is supported over the bottle  2  the metallic spiral  4  gradually penetrates in the cork  21  as the corkscrew rotates.  
         [0031]    The part  3  has a graduated scale  33  in the sides of the openings  32 , allowing to know the penetration of the metallic spiral in the cork  21  according to the position of the pin  42 .  
         [0032]    As the metallic spring  4  is introduced in the cork  21 , the former is displaced towards the forward area of the tubular part  3 , being guided with the pin  42  in the openings  32  and overcoming the resistance of the spring  6 .  
         [0033]    To remove the cork, a tubular part  3  has been provided. A foldable lever  7  is fitted by means of a shaft  71  over some lateral lugs  52  defined for such a purpose in the cigar cutter  5 . The lever  7  is arranged at one of the tubular body sides  1  and has a preferably “U” section.  
         [0034]    An external blade  73  to lift crown corks from bottles and an internal arm  74  intended to be separated from the internal surface of the foldable lever by the action of a torsion spring  75  fitted over the shaft  72 , are fitted over the intermediate area of the lever  7  by means of a common rotational shaft  72 .  
         [0035]    The lever  7  may be kept attached to the tubular body  1  by the action of a hook  13  fitted with rotation capability over the lateral surface of the body  1  and which is housed in an opening defined for such a purpose in the forward end of the lever  7 .  
         [0036]    The tubular body  1  has laterally, an oblique teething  14  over which the arm  74  will actuate when actuating the lever  7  to remove the cork  21 .  
         [0037]    When the metallic spiral  4  has been introduced in the cork  21  by means of corkscrew rotation, it will be enough to release the hook  13  so that spring  75  opens the lever  7  and actuates the free end of the arm  74  over the body  1  teething  14 .  
         [0038]    When folding the lever  7  against the lateral surface of the body  1 , the end of the arm  74  being supported over the teething  14 , the upper end of the former and hence the tubular part  8 , make an ascending movement of a determined length.  
         [0039]    On releasing the lever  7 , this returns to the opening position by means of the spring  75  and the end of the arm  74  is interlocked in the teething  14  but at a greater height with respect to the previous position, so that when successively actuating the lever  7 , the elevation of the tubular part is achieved until removing the cork  21 .  
         [0040]    Cork removal is possible due to the pushing of the lower ends of the lateral openings  32  of the tubular part  3  over the ends of the pin  42  of the metallic spiral.  
         [0041]    As may be observed in the drawings, the corkscrew has some constructive features like the definition in the tubular body  1  of a lateral tooth  35  for the removal of crown type corks. This tooth  15  is arranged in the base of the mouth  11  and matching the front end of some of the lateral windows  16  of the body  1 .  
         [0042]    The contact of the ends of the pin  42  with the back end of said windows  16  prevents the release of the tubular part  3  by the back end of the body  1 .  
         [0043]    The arm  74  has some lateral tabs  76  facilitating its grip to release it from the teething  14  once the cork  21  has been removed and folding it towards the inside of the lever  7 .  
         [0044]    As may be seen in the figures, the cigar cutter  5  has a concavity  53  in its back end, from which a tubular appendix  54  leaves whose end defines a saw edge profile. The cigar cutter  5  also includes a foldable closing cover  55 .  
         [0045]    It is not considered it necessary to extend this specification any more for any person skilled in the art to understand the scope of the invention and the advantages derived from it. The terms in which this specification has been drafted should always be interpreted in the widest sense and not limited in any way.  
         [0046]    The materials, shape, size and arrangement of the components may be varied provided this does not support an alteration of the basic features of the invention which are limited below.  
         [0047]    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 constructions differing from the types described above.  
         [0048]    While the invention has been illustrated and described as embodied in corkscrew, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.  
         [0049]    Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.