Corkscrew

Abstract: An improved corkscrew having a main body or lever (1), whose intermediate section has a shaft (2) on which a helicoidal thread (3) swings and in whose end there is another shaft (7) by which a second ribbed arm (8) swings, having on its two sides two grooves (12) opposite to each other, along which the two extensions of the shaft (7) run, with several locking points.

Description: OBJECT OF THE INVENTION The present invention refers to a corkscrew of the type used to remove cylindrical corks from glass bottles containing liquid and especially wine. BACKGROUND OF THE INVENTION Corkscrews are well known, especially for being designed to remove cylindrical cork stoppers from bottles, basically consisting of a puller, whose pointed end penetrates the surface of the stopper to be removed and after manually penetrating the latter by applying pressure and rotating, it has an articulated extensible arm device, with a point of support for the bottle neck, after which significant physical force has to be applied to create the corresponding leverage to remove the bottle stopper in question, almost always leaving a piece of cork inside the bottle, hence requiring an extra effort to complete the operation. This second pulling operation, causes the bottle to shake due to the resulting back motion of said action, which may provoke undesired spillage of the bottle contents. As a background to this invention, European Patent 0041026A, the Swiss patent 515181A, the German Patent 29720239U and the French patent 1273285A should be mentioned. Specifically, in the European Patent 0041026A, according to the preamble of claim 1, a corkscrew is shown that consists of a main body in whose middle section there is a helicoidal screw, folding by means of a first support shaft connected to the main body, and, at the end of the main body there is a second support shaft through which the ribbed arm moves, which ends in a convex form to act as a support point for the neck of the bottle, said ribbed arm having grooves opposite one another on the sides along which the extensions of the aforementioned second shaft slide, to divide the movement of the lever during the extraction of the cork into different stages. The problems that this type of corkscrew present are, on the one hand, that the user must apply a constant pressure to the ribbed arm to keep it supported over the neck of the bottle and, on the other, that when there is no longer pressure exerted on the ribbed arm, it may freely rotate about the corresponding axis, without tending to be displaced towards determined end positions. It is usual that some corkscrews have a recess or groove in the main body to allow location of a cutter used in the uncorking of the bottle, as can be observed in the aforementioned Swiss patent 515181A. It is also usual, as can be observed in the German patent 297202390 or in the French patent 1273285A, for some hooks or extensions to be defined in the ribbed arm to allow extraction of crown caps. DESCRIPTION OF THE INVENTION The corkscrew of the invention, as defined by claim 1, is of the type that has a main body or lever, in the intermediate part of which there is a helical thread or fold-away corkscrew thread on the support axis and, at the end of this main body there is a second axis by which there swings a ribbed arm ending in convex form to serve as a point of contact with the bottleneck and which has sides opposite each other designed such that the extensions of the axis are locked in two or more inlays, presents some characteristics designed to resolve the aforementioned problem regarding keeping said grooved arm at the end positions. In accordance with the invention, this corkscrew has a spring the ends of which are supported at the main arm or lever and, approximately, in the middle part of the grooved arm, said spring supported in the middle part on the axis about which the two arms rotate, exercises a slight pressure so that it is fixed in both positions according to how open or closed the position is. The grooved arm may have a roughened surface at its back part to facilitate the support of the fingers of the hand for its operation. As the levering action is applied to remove the stopper, a spring located for such a purpose makes the shaft, in the manner of a ratchet, situate itself at different heights with respect to the grooved support arm. This system permits the removal of the stopper in question with the minimum effort and without the former rubbing with the lower part of the extractor arm. DESCRIPTION OF THE DRAWINGS To complete the description being made and to better understand the features of the invention, a set of drawings is attached to this specification where the following is shown to illustrate the former without limiting its extension. Figure 1 - shows a view of the corkscrew in the folded position. Figure 2, shows a section of the corkscrew in the unfolded position, Figure 3, shows the corkscrew in the unfolded position. Figure 4, shows a perspective view in which the foldable arm may be seen, with its end leaning on the upper part of the bottle mouth and the lever significantly lowered to be immediately raised. Figure 5, shows a perspective view of the corkscrew once the lever has been raised the first time. Figure 6, shows a perspective view of the corkscrew with the shaft leaning on the second ratchet point and with the extracting lever in a downwards position prepared for lifting. Figure 7, shows a perspective view of the corkscrew once the lever has been raised. PREFERRED EMBODIMENT OF THE INVENTION In the light of these figures it may be seen how the structure of this corkscrew is formed as from a first ergonomic arm or lever (1) having in its middle part a shaft (2) from which a helicoidal thread or puller (3) is fastened at its square end (4) and whose other end finishes in the shape of a punch (5). Inside this main body or lever (1), a spring (6) is interlocked which embeds the helicoidal thread (3) in its square part (4). At one of its ends, this main body (1) has a shaft (7) by means of which another ribbed arm swings in its inner part, the former having a spring (9) which is fastened at one of its ends in the intermediate section (10) of this ribbed arm (8) and in its other end (11) in the upper intermediate section to the shaft (7) supporting the main arm (1) and leaning on the same shaft (7). On its opposite faces, the ribbed arm (8), has some grooves (12) also opposite to each other and symmetrical in the entire run, along which the ends of the shaft (7) located in the main body (1) run. The spring (9) applies a double function to the device, since in the rest state or closure of the corkscrew (Figure 1), it pulls the two arms (1) and (8) for them to maintain a parallel arrangement and in a working position it applies a slight but sufficient pressure for it to continue next to the helicoidal thread or puller (3). The ribbed arm (8), may have, on at least one of its sides, a sharp or pearly finish (13), serving to unseal the bottle capsules or seals. It may also have the main arm or lever (1), with a groove in which a pen-knife may be located for the same purpose. The starting point for use is the folded position of the improved corkscrew as shown in Figure 1. Then open the ribbed arm (8) until it adopts the position shown in Figure 2, that is, rotating it about one hundred and eighty degrees, whose position remains stable due to the force applied by the spring (9) tending to join the two components. Then, the helicoidal thread or puller (3) should be folded about ninety degrees, such that the spring (6) existing in the main body for such a purpose pushes against it, facilitating its penetration in the stopper (14) of the bottle (15) to be removed. Once the puller (3) has been introduced, a slight pressure should be applied on the outside part (16) of the ribbed arm (8) , making the spring (9) to aid the latter to suitably locate itself, that is, the convex termination (17) of the foldable arm (8) should be placed on the upper part of the bottle (15) neck. After this positioning, the lever or main body (1) will be activated upwards, the latter swinging from the ribbed arm (8), by means of the shaft (7) locked in the lower position and once this main arm (1) is raised, it should be lowered until the shaft (7) slides towards the other upper locking point by means of the guide (12), then repeating the action, that is, raising the main arm (1) until the stopper (14) is totally removed. It should be mentioned that the groove (12) may have as many shaft (7) support points as necessary. The ribbed arm (8) may have two extensions in the shape of a hook (18) to extract crown caps. It is not considered necessary to extend this description for any expert in the matter to understand the scope of the invention and the advantages derived from it. The materials, shape, size and arrangement of the components will be susceptible to variation, provided they do not change the scope of the invention as defined by the claims.

Claims: A corkscrew, of the type that comprises a main body or lever (1) in whose intermediate section, there is a helicoidal thread or puller (3), foldable by means of a fastening shaft (2), and at the end of this main body there is a second shaft (7) over which a ribbed arm (8) swings finished with a convex shape (17) serving as a support point to the bottle neck and having in its sides, opposite each other, some grooves (12), designed so that the extensions of said second shaft (7) are locked in two or more inlays; characterised in that it possesses a spring (9) on its inside part, attached at the end part (11) of the main arm or lever (1), and at the other end approximately at the middle part (10) of the grooved arm (8), the spring being supported with its middle part on the second shaft (7) about which the grooved arm rotates, exercising a slight pressure depending on whether the position is open or closed so that it is fixed in both positions. A corkscrew according to claim 1, characterised in that the spring (9) provokes the meeting of the two arms (1, 8) in the open position. A corkscrew according to claim 1, characterised in that the spring (9) in the working position makes the grooved arm (8) tend to apply pressure towards the helicoidal screw or puller (3). A corkscrew according to the previous claim, characterized in that the grooved arm (8) in its anterior part presents a rough surface (16) to facilitate the support of the fingers for its operation.

Inventors: BONICH LINARES MARTA, BRUCART PUIG RAMON, BONICH LINARES, MARTA, BRUCART PUIG, RAMON
Applicants: BONICH LINARES MARTA, BRUCART PUIG RAMON, BONICH LINARES, MARTA, BRUCART PUIG, RAMON
Application year: 1999
Main classification: B67B7
IPC codes: B67B7