Abstract:
The invention is a corkscrew ( 1 ) for caps made of cork or plastics equipped with two levers ( 7 ) and ( 8 ) each having two shaped or cam outlines ( 11, 12 ) that subject corresponding teeth ( 41 ) and ( 51 ), carried by concentric barrels ( 4 ) and ( 5 ), to different movements such as to allow the complete extraction of the cap from the bottle and its ejection. The corkscrew ( 1 ) takes care of blocking the bottle neck during the worm screwing through a garter-spring tightening arrangement ( 6 ). The levers ( 7,8 ) are synchronously moved through teeth ( 13 ) that engage a toothed wheel ( 14 ).

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     Not Applicable 
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not Applicable 
     INCORPORATION-BY-REFERENCE OP MATERIAL SUBMITTED ON A COMPACT DISK 
     Not Applicable 
     REFERENCE TO A MICROFICHE APPENDIX 
     Not Applicable 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     This invention is concerned with a novel corkscrew that removes a cork from a bottle. 
     BRIEF SUMMARY OF THE INVENTION 
     The present invention is concerned with a corkscrew having cams and is different from all other corkscrews due to the following mode of operation: with only two levers and only two movements, the corkscrew screws the worm into the cork, extracts it from the bottle and expels the cork from the worm, in an ergonomic and simple way. 
     The two levers, during their cycle, control two suitably and mutually configured cams, which generate a mutual reciprocating movement along their path. This movement on one hand screws and extracts the cork, and an the other hand ejects the cork without any manual support and/or additional intervention. 
     It is an object of the present invention to provide a corkscrew that, through two levers and a suitable combination of shaped outlines, allows extracting a cork from a bottle. 
     Another object is to allow the cork, to be automatically detached from the corkscrew. 
     These objects and advantages are all achieved by the cam corkscrew of the present invention, that is characterised by a central body ( 2 ) and a base ( 3 ) joined thereto; the central body ( 2 ) having two plane and parallel surfaces ( 2   a ) each one of which has a pin ( 2   b ) that allows a coupling with levers ( 7 ,  8 ), characterised in that said levers ( 7 ,  8 ) have shaped or cam outlines ( 11 ,  12 ), each one of which is respectively put in contact with teeth ( 41 ,  51 ) projecting from a pair of concentric barrels ( 4 ) and ( 5 ) which arte inserted in the central body ( 2 ); the shaped outlines ( 11 ,  12 ) allow extracting and ejecting the cork. 
     These and other characteristics will be better understood from the following description of some embodiments that are provided merely as a non-limiting examples. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         FIG. 1  is a front view of the corkscrew of the invention. 
         FIG. 2  is a cross-section of the corkscrew of the invention facing the side of the corkscrew. 
         FIG. 3  is a side view of the corkscrew of the invention. 
         FIG. 4  is a cross-section of the corkscrew of the invention facing the front of the corkscrew. 
         FIG. 5  is a perspective view of the cork screw of the invention. 
         FIG. 6  is an exploded perspective view of the corkscrew of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     with reference to  FIG. 1 ,  1  designates a cam corkscrew that is essentially composed of a central body  2  and a base  3 . 
     The central body  2  has two plane and parallel surfaces  2   a  and a pin  2   b  to allow its coupling with levers  7  and  8 , which are shown in  FIG. 2 . The levers  7  and  8  make it possible to extract the cork as explained below. 
     The central body  2  contains therein several two concentric barrels  4  and  5 . Barrel  4  into the central body  2  and into the barrel  5 . 
     Each barrel  4  and  5  is equipped with a pair of tooth pins  41  and  51  that respectively move in corresponding openings  21  located on the central body  2  (and precisely along the abutting surfaces of levers  7  and  8 ) in order to make the barrels  4  and  5  move in a rectilinear stroke parallel to the axis of the cork to be extracted. 
     It can be observed that every opening  21  drives both pin  41  and pin  51 . 
     Barrel  4  is equipped, in its lower end, with an idle worm  43  (in the art, it designates the helical bit that will have to be inserted into the cork) while barrel  5  is equipped in its lower part with a helical (fixed) bush  53  which said worm  43  engages, thereby allowing their rotation-translation. 
     In the lower part of the central body and base  3 , a garter spring arrangement  6  is located for anchoring the corkscrew to the bottle. The garter spring arrangement is composed of two parts, designated in this example by A and B. Part B is fixed to the central body  2  and is inserted in the corresponding part A that does not slide vertically with respect to this latter one. 
     Initially when the screwing action is performed by inserting the bottle to be opened into the corkscrew  1 , part A remains upwards with the spring compressed around the bottle neck in a blocking position. 
     With reference to  FIG. 2 , one of the two levers  7  and  8  are shown precisely with its internal part that contacts with the corresponding surface  2   a  of the body  2 . Two cam grooves are provided on the lever, and are called herein below shaped outlines and designated by references  11  and  12 , each one of which respectively contacts pin  41  and pin  51 , after said pins have been inserted in their corresponding openings  21  as described before. 
     Outline  11  is different from outline  12  that is used for extracting the cork in order to allow, as described below, screwing and unscrewing the cork easily and without difficulty. 
     From  FIG. 2 , it can be observed that every lever has a series of teeth  13  that will mesh with corresponding toothed wheel  14  which is placed inside the corkscrew  1 , between the central body  2  and the base  3  once the lever is centered through its hole  15  around pin  2   b.    
       FIGS. 3 ,  4  and  5 , the functional diagram of the lever corkscrew  1  with its main internal components. 
     By placing the corkscrew  1  with lifted levers onto the bottle to be uncorked. ( FIG. 3 ) and by rotating levers  7  and  8 , the anchoring of the bottle with the garter spring  6  occurs first (by lifting part A with respect to part  73 ) and afterwards, by continued rotation, the idle worm  43  is screwed into the cork ( FIG. 4 ) and afterwards is extracted by means of the complete stroke of pins  41  and  51 . 
     Thereafter the two levers are completely lowered and both barrels are completely lifted ( FIG. 5 ). 
     By returning the two levers  7  and  8  towards their initial position (namely by performing a counter-rotation), both barrels  4  and  5  simultaneously descend down to their bottom center (as shown in  FIG. 4 ) and afterwards, by continued counter-rotation, only barrel  4  is lifted up while barrel  5  remains, due to the effect of the arrangement of outline  12 , in its bottom center. It follows that the idle worm starts to be unscrewed from the cork due to the rotation performed, by the bush  53  that is secured to the barrel  5  (within which the worm is passed). 
     It is clear that, before performing the above counter-rotation, it is necessary to remove the uncorked bottle from the corkscrew which is, released by the garter spring  6 . 
     Corkscrew  1  is now again in its initial position ready for reuse. 
     During the above-described steps, the movements of the levers are synchronized by the assembly both of toothed wheel  14  and of the teeth  13  that contact the levers as described previously. 
     The sequence to be performed for extracting and ejecting a cork from a bottle is summarised by steps: 
     Placing the bottle neck inside the lower opening provided in part A of the helical-spring closure arrangement, the bottle is placed against the bush  53  and the levers  7  and  8  are vertically placed the garter spring  6  during the descent of worm  43  caused by the rotation pressure to which levers  7  and B are subjected; 
     The barrel  4  descends into body  2  and the idle worm  43  is completely screwed into the cork; the barrel  4  reaches the lower center as shown by the corresponding outline  11  ( FIG. 4 ); 
     Extracting the cork due to the continued rotation previously performed by the levers  7  and  8  and due to the simultaneous rise of the barrels  4  and  5  imposed by the corresponding outlines  11  and  12 , the barrels  4  and  5  keep the same distance so that the worm  43  does not rotate in the bush  53  and therefore the cork follows the stroke of worm  43  without being unscrewed. When the levers are completely lowered and the barrels are in their maximum position inside the central body  2  of the corkscrew  1  ( FIG. 5 ), the uncorked bottle is moved away (the helical spring  6  is not kept against the bottle neck by parts A and El). Counter-rotating the levers  7  and  8  brings back the corkscrew  1  to its initial configuration with both barrels firstly going back to their lower center ( FIG. 4 ) and following a further counter-rotation, the barrel  4  rises again till it gets to its initial configuration while barrel  5 , remaining in position, causes the idle worm  43  to be unscrewed from the cork.