Patent Publication Number: US-4836060-A

Title: Energy efficient cork extractor

Description:
BACKGROUND ART 
     Numerous devices have been appropriated for the purpose of removing a plug or stopper from common liquid containers. The inventions that reside in this art depend on various physical and mechanical procedures to accomplish what should be a simple and effortless operation. Many of the aforesaid devices apply various attitudes of leverage, prying and pulling type motions that complicate the act of extracting a cork or stopper from its container. Some other devices depend on elaborate mechanical systems, one of which, while installing its corkscrew, raises two arms approximately 170 degrees, said arms are then used as levers to pull the cork or stopper from the bottle. This device, although respectfully adequate, is dependent on a two handed lever system, which correctly operates only upon a full penetration of the cork or stopper. This deep penetration allows cork particles or fragments to enter and violate the contents of the bottle; said extensive penetration of the cork, also disallows an easy removal of the cork from the corkscrew, after the operation is completed. Additional devices in this art operate with the use of gas or air pumps. The use of these pumps, are noted by wine manufacturers, to aerate and lessen the quality of the containers contents. It has become apparent, that the instruments in this art have provided some room for improvements. Generally, the present invention utilizes a threaded cylindrical shaft in conjunction with a threaded ball, to install the corkscrew and remove the cork by means of applying a simple continuous clockwise rotation of said ball. The problem solving achievements of this new device are many fold. For example, the present invention requires only a partial penetration of the cork, thus eliminating cork fragments from extering and effecting the quality of the containers contents, this also allows an easy removal of the cork from the corkscrew after the removal procedure is completed. A second problem solved, is that of relieving its user of the stressful requirements of lever, prying and pulling actions, while applying only a one handed, effortless, clockwise rotation of said ball. Since air or gas pumps are no longer required to achieve an effortless extraction of the cork or stopper, the previous stated aerating problem has been resolved by the present invention. The present invention has also replaced elaborate mechanical systems with simple cooperating threaded components. 
     SUMMARY OF THE INVENTION 
     It is a major objective of the present invention to provide a cork or stopper extractor which in general, utilizes a threaded cylindrical shaft, adapted to support a common corkscrew tip and a threaded ball, so as to allow for a simple physical and mechanical extraction, in that a continuous clockwise rotation of the ball, penetrates and removes the cork or stopper. A second major objective is to provide an improved cork extractor, whereby the ease of the removal procedure, does not sacrifice the quality of the containers contents, such as aerating factors and cork fragments participating in the product of the bottles. Generally, the objectives of this invention are carried out by providing a threaded cylindrical shaft adapted at an end, to support a common corkscrew tip. The opposite end of the shaft incorporates diminishing threadings, at which point a pin is placed through, and protrudes from the shafts diameter. A hollow bell shaped housing is adapted to move freely along the length of the threaded shaft, and conform to varying sized container rims. The cylindrical shaft threadings are to accept the threadings of a ball, said ball is also provided with a slot, to communicate the said pin. Upon the ball and pin involvement, a clockwise rotation of the ball is initiated, thus rotating the entire threaded cylindrical shaft and its accompanying corkscrew tip, thus installing the corkscrew in the cork. While rotating, the ball is pushed downward slightly to depart from the pin, and begin its engagement with the threadings of said cylindrical shaft, whereby a continuation of the balls clockwise rotation allows a resistance to embody the bell shaped housing and container rim, thus in opposition, the threaded cylindrical shaft is drawn up and through the threadings of said ball, resulting in a simple and effortless removal of a cork or stopper from its container. A spring may be optionally placed along the threaded cylindrical shaft, and positioned atop the bell shaped housing to assist in the cork removal operation, by applying its stored contracted energy to the ball and threaded cylindrical shaft, said springs contraction is made allowable by its positioning between the bell shaped housing and the descending rotating ball. 
     Providing this one handed, one way rotation, single mode operation, is still another objective of this invention, whereby amputees, unskilled, and otherwise handicapped persons may utilize these advantages. 
     This and other objects, features and advantages of the present invention will become more apparent in the following description of a preferred embodiment with reference to the accompanying drawing, in which 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side view of the components comprising the invention. Included and offset are a pin and a spring. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     In reference to FIG. 1, in this a side view of the invention, the present cork extractor comprises a cylindrical shaft denoted by numeral 1 preferably composed of a lightweight plastic or nylon material. Threadings 9 begin at an end and run along the exterior of cylindrical shaft 1, to a location denoted by numeral 10 where threadings diminish to a nonexisting state. A lightweight plastic or nylon ball 5 has been appropriated with interior threadings 7, said threadings are to pass completely through its diameter or center, said threadings 7 are to also cooperate with exterior shaft threadings 9. The cylindrical shaft 1 also incorporates interior threadings, represented by numeral 6, interior threads 6 are to accept exterior threadings 3 of a common corkscrew tip 2, thus connecting the cylindrical shaft 1 with the common corkscrew tip 2. Near an opposite end of the cylindrical shaft a hole 11 is placed, which extends through the shafts diameter, hole 11 is to receive and support a pin 12, said pin 12, preferably being of a hard enduring material, passes through the shafts diameter and is situated here with equal protrusions at its points of entry and exit. Ball 5 having a groove or indentation 14, is to slide along the diminishing thread portion 10 of the cylindrical shaft 1, said groove or indentation is shaped and sized to grasp the protruding portions of pin 12. Upon the union of ball 5 with pin 12, a clockwise rotation of the ball is commenced, thus rotating the entire threaded cylindrical shaft and its accompanying corkscrew tip 2, resulting in an installation of the corkscrew tip in the cork. While rotating, ball 5 is pushed downward slightly to depart from pin 12, and begin its engagement with threadings 9 of cylindrical shaft 1, whereby a continuation of the balls clockwise rotation allows a resistance to embody a bell shaped housing 4 and a containers rim, said housing 4 is adapted to move freely along the length of cylindrical shaft 1 and conform to varying sized container rims, in opposition to said resistance, the threaded cylindrical shaft 1 is drawn up and through threadings 7 of said ball 5, resulting in a simple and effortless removal of a cork or stopper from its container. It should be noted that a common spring denoted by numeral 8 may be optionally placed along the cylindrical shaft 1 and positioned between ball 5 and bell shaped housing 4, so as clockwise rotating ball 5 compresses spring 8, thus an upward force is applied to the ball and the threaded cylindrical shaft, resulting in a second and separate extracting energy to the cork or stopper. A rubber pad 13 may also be optionally placed atop cylindrical shaft 1, said pad 13 is used as a hand cushion for applying a downward pressure to initiate cork penetration of the corkscrew tip. It should also be noted that this present device does not rely on a full penetration of the cork, to place mechanical components in proper operating positions, therefore necessary rotations of ball 5 are limited, while not jeopardizing a firm installation of the corkscrew. It is understood that changes and modifications in the specifically described embodiment can be carried out without departing from the scope of the invention which is intended to be limited only by the scope of the appended claims.