Manually operated corkscrew with multiple support points

Abstract: Of the type that incorporates a basic body (1) to which a support arm (5) is connected at its ends by means of a joint, while in its middle area a helicoidal spike (3) in the form of a ringlet is also connected by means of a joint. This spike may be coupled axially with the stopper, operating the bottle-opener as a unit. It centres its characteristics on the fact that in the fluted interior of the said support arm (5) there is one or more rockers (13-18), which tilt upon respective axes (14) and (19) and which are governed by retractile supports (16) and (21), in such a way that the bottle-opener offers the user, in addition to the fixed and conventional support upon the mouth or neck of the bottle defined by the free end (5') of the said arm, two further intermediate points of support (16) and (21), which may be used selectively and successively, employing throughout the stopper extraction operation the most suitable point of support at each moment.

Description: OBJECT OF THE INVENTION The present invention refers to a manually operated corkscrew, specifically of the type that incorporates a base to which a spike in the form of a ringlet, that is, of an appreciably helicoidal shape, is connected by means of a joint. Cooperating with the said base, an arm connected by means of a joint at one of its ends acts as a fulcrum or point of support upon the mouth of the bottle when the said base is bulled upon. The object of the invention is to establish several points of support in the said arm in order to be able to vary the effective length of the same throughout the extraction of the stopper, so that this is effected in optimum conditions. BACKGROUND OF THE INVENTION The type of corkscrew referred to in the foregoing paragraph, which is very widely used, has an action that is based on the introduction of the ringlet-type spike into the cork to be extracted, in an appreciably axial direction, subsequently pulling upon the said spike and consequently upon the stopper, by means of the basic body of the bottle-opener, acting as a lever, to which the said spike is fixed and after supporting the lateral arm upon the mouth of the bottle. This type of bottle-opener is becoming, in short, a practical application of a second lever, with the point of support at one end and the resistance in the middle. This type of corkscrew, perfectly effective from the theoretical point of view has, in practice, the basic disadvantage that the long path the "ringlet" has to travel to extract the cork completely obliges the auxiliary arm also to be of considerable length, so that the initial action is often very difficult, owing to the marked angle that the tilting arm has to form with the base, so much so that sometimes the "ringlet" cannot completely engage with the cork. So initially a partial penetration has to be carried out, by means of which extraction of the cork is begun, and subsequently the said introduction is completed. If it were not done in this way, total extraction of the cork by leverage would not be possible, which means, in addition to greater complexity of action, in that the coupling of the "ringlet" with the cork has to be effected in two stages, a greater risk that the cork, if it is not of very good quality, will break as a result of the force applied to the same when it is not completely pierced by the helicoidal spike or "ringlet". As background of the invention the document disclosing a corkscrew in accordance with the preamble of claim 1, FR 2 689 115, of the same applicant may be cited, in which a fluted support arm which has an articulation in its intermediate part is presented and the patent EP 0 024 026 in which there are several designs which dispose of intermediate supports. These systems entrain the difficulty that they have to be manually operated in order to avoid the friction with the support arm throughout the extraction of the stopper. DESCRIPTION OF THE INVENTION The corkscrew proposed by the invention, starting from the basic and conventional structure of a corkscrew of the type referred to hereinbefore, centres its characteristics on the fact that in its fluted support arm on the neck of the bottle, also with the classic fluted shape, a pair of rockers are fitted which tend to emerge laterally and internally onto the mouth or neck of the bottle, and at a given moment the one whose position is more conducive to the optimum operation of the bottle-openers may be used. Finally, as is conventional, the free end of the arm itself may be used as a support upon the neck of the bottle, which gives the corkscrew three points of support that are at substantial distance from each other, corresponding to as many operating positions of the same. In accordance with another characteristic of the invention, the upper rocker is assisted by a spring which tends to make it tilt towards the non-operational position, that is, towards a position of concealment within the body of the arm itself. This first rocker overlaps with its lower part the upper end of the second one, in such a way that as the said spring forces the first rocker to retract, this forces the second rocker to project outwards, towards the operating position. The positional change of both rockers is caused by the mere lateral resting of the lower one upon the neck of the bottle, which forces it to tilt in the direction of the retraction, with the consequent outward expulsion of the upper rocker. In accordance with a simpler embodiment, the arm of the corkscrew may be fitted with a single rocker, also assisted by a spring, with the consequent functional limitation that this implies, as in this case the corkscrew is only capable of working in two positions. The single rocker means that there has to be a button, duly shaped to fit into the said rocker, which emerges from the arm through a slot, in such a way that in order for the said rocker to operate it is necessary to press one's hand on the said button and against the tension of the spring that assists the rocker. In any case the corkscrew may be fitted with any type of conventional accessory, such as a folding knife for tearing the cap that covers the mouth of the bottle, or an auxiliary teat which enable tops of the "crown" type to be removed. DESCRIPTION OF THE DRAWINGS To complement the description that is being carried out and so as to afford a better understanding of the invention's characteristics, in accordance with a preferred practical embodiment of the same, a set of drawings accompany the said description as an integral part thereof. These drawings represent, in an illustrative and non-restrictive way, the following: Figure 1.- Shows a side elevation view of a manually operated bottle-opener with multiple support, carried out in accordance with the object of the present invention, and shown in non-operational or folded position. Figure 2.- Shows a similar representation to that of the foregoing figure of the same bottle-opener, but it is shown unfolded and ready to perform the function for which is designed. Figure 3.- Shows a similar representation to that of figure 2, of the same bottle-opener, but is shown partially sectioned, displaying the inner structure of its fluted support arm. Figures 4, 5, 6 and 7.- Show several sequences corresponding to the use of the corkscrew for extracting the cork from a bottle. All of these figures are side elevation views and one of them also shows the arm sectioned. Figures 8, 9 and 10.- Show representations relatively similar to figures 1, 2 and 3, but corresponding to the more simplified embodiment of the corkscrew. Figures 11, 12, 13, 14 and 15.- Show successive sequences of the operation process corresponding to the use of the corkscrew shown in figures 8 to 10. PREFERRED EMBODIMENT OF THE INVENTION In the light of these figures, and more specifically of figures 1 to 7, it may be observed how the manually operated corkscrew with multiple support that the invention proposes is made up of a basic body (1), in which a handle (2) is defined at the end for operating the same, in opposition to which, but in the middle area, there is a spike (3) in the form of a ringlet, which may be folded inwards into the fluted interior of the body (1) with the help of an axis (4), while at the end of the body (1) opposite to the handle (2) a fluted support arm is connected by means of a joint (5), which is also foldable by means of a tilting axis (6). This arm's free end (5') is in the shape of a claw suitable for resting against the flange (7) or neck (8) of the bottle (9). As a complement to these characteristics, which are common knowledge, the corkscrew may also incorporate, associated with the basic body (2), an auxiliary knife (10), mounted upon the tilting axis itself (6), for the arm (5) and which may be folded onto the body (1), which may be used for tearing the cap that covers the mouth of the bottle and also the upper surface of the cork stopper (11) to be extracted. Likewise and as is also conventional, the fluted support arm (5) may incorporate an outer and auxiliary socket (12), also known, for a claw to open bottles which are fitted with what is commonly termed a "crown top". Preferably, the fluted support arm's (5) outer side is to have a curved, concave profile, as may be seen in the drawings, and its development will coincide with the curvature of the upper or outer side of the basic body (1). This gives the unit, when closed, ergonomic characteristics that facilitate its manual use, adapting itself fully to the hollow of the hand. Thus, in accordance with the essential nature of the invention and starting from this basic and conventional structure, inside the fluted support arm (5), with its fluted cross section, there is a mechanism that governs the said multiple support, enabling the user, at will, to choose one of the multiple successive support points offered by the corkscrew. More specifically, the said mechanism consists of two rockers (13-18), the first of which (13) is situated at the upper part or the arm (5), fixed in such a way that it is able to tilt on a transverse axis (14) and with a flat side (15) which terminates at its lower end in a claw (16) that rests upon the mouth (7) of the bottle or upon its neck (8). This rocker (13) is assisted by a spring (17) whose ends rest, one upon the inner side of the arm (5) and the other upon the inner side of the flat base (15) of the rocker itself (13), while its middle area is coiled on the tilting axis (14) so that the spring (17) tends to make the rocker (13) tilt towards a non-operational or retracted position in relation to the mount of the fluted arm (5). The second rocker (18), similar to the foregoing, is situated at the lower part of the same fluted arm (5), mounted in such a way that it is able to tilt upon another transverse axis (19) and its inner profile rests against the inner side of the arm (5), while its outer, flat side (20) rests in its turn upon the lower part of the rocker (13) and terminates likewise in an end (21) that has the shape of a claw which forms the second point of support. Thus the second rocker interacts with the first in such a way that the single spring (17) which tends to retract the upper rocker also causes the simultaneous outwards expulsing of the lower rocker (21). Thus, when the corkscrew is in repose, the upper rocker (13) is concealed inside the arm (5) by the action of the spring (17), at the same time as the claw (21) of the lower rocker (17) is projected outwards when the device is operating. When the cork (11) extraction operation is initiated and once the "ringlet" (3) is introduced into the former, when the arm (5) is pressed against the neck of the bottle (9), as figures 4 and 5 show, the projecting claw (21) reaches its limit against the neck (8) of the bottle, and retracts towards the inside in accordance with the arrow (21'), causing an interaction with the upper rocker (13) which, in accordance with the arrow (13') is forced to tilt against the tension of the spring (17) until its claw (16) adopts the projecting position of figure 5 and remains resting upon the mouth (7) of the bottle, allowing an initial action on the handle (2) of the basic body (1) in order to perform the first stage in the extraction of the cork. When the operation described reaches its limit and the cork 811) has not been completely extracted, tilting the handle (2) downwards causes the arm (5) to rise until the rocker (18) reaches the level of the mouth (7) of the bottle. At this point the said rocker is seen to project outwards as there is no longer any pressure against the side surface of the neck of the bottle. The rocker moves to a position where its claw (21) is operational, while the upper rocker (13) moves to a non-operational position, so that in practice the bottle-opener's support has been substantially displaced downwards, allowing the second stage of the cork extraction to be carried out in optimum conditions. If the dimensions of the stopper make it advisable, its extraction may be carried out in three stages, adding to the two stages described hereinbefore a final stage in which the lower end (5') of the arm (5) acts upon the mouth (7) of the bottle as a third point of support in the tilting operation of the basic body (1) for pulling upon the "ringlet" (3) and consequently the stopper associated with the same. The successive rising of the fluted support arm (5) upon the neck (8) of the bottle, with the purpose already described, namely, so that the progressive point of support is found in the claws (16) and (21) of their respective rockers, is facilitated by the inner profile of the same, which is slightly curved, allowing a sliding effect, without making this movement difficult. However, the corkscrew may be simplified, in accordance with the embodiment represented in figures 8 to 15, by incorporating on its fluted support arm (5) a single rocker (22), fitted likewise on the corresponding transverse axis (14) and assisted by the same spring (17). On this rocker there is likewise a flat side 815) terminating in a supporting claw (16), but with the difference that in this case and given that there is no second rocker interacting with the first, the single rocker (22) is fitted with a button (23) that emerges from the arm itself (5) through a slot or window (24) in the latter, in such a way that in normal conditions the spring (17) retracts the rocker (22) towards the non-operational position shown in figure 9, as in the foregoing case. In this position the button (23) emerges outwards, allowing a manual and direct action upon the same, in accordance with the arrow (22') in figures 10 to 13, so that the claw (16), which effects the support, moves to the operational position, allowing it to rest upon the mouth of the bottle, as shown in figures 12 and 13, which allows, as in the foregoing case, the first stage of the stopper (11) extraction to be carried out which, after the bottle-opener has risen in accordance with the arrow (5') in figure 14, allows the classic support (5') of the arm itself (5) to be used to complete the second stage of extraction of the stopper (11). Evidently this solution is structurally simpler but, on the other hand, it limits the bottle-opener's possibilities, which in this case has no more than two possible points of support upon the mouth or neck of the bottle, compared with the three points of support of the previous case.

Claims: A manually operated corkscrew with multiple points of support, of the type that incorporates a basic body (1) that acts as a lever, which is connected, by means of a joint (6) at one of its ends, to a fluted support arm (5) whose free end (5) has the function of resting upon the mouth or neck of the bottle, while said lever in its middle area incorporates, by means of a joint (4), a helicoidal spike (3) in the shape of a ringlet whose function is to couple axially with the bottle's stopper, characterized in that said fluted support arm (5) incorporates at least a rocker (22) that tends to a retracted or non-operational position due to the effect of a spring (17) fitted on the tilting axis (14) of the rocker. A manually operated corkscrew with multiple points of support, as claimed in claim 1, characterised in that it consists of two rockers of similar form (13, 18), placed in the inner part of the fluted arm (5), which have a spring of extension (17), tilted around the axis (14), whereby the upper rocker (13), is hidden in the inner part of the arm (5) and the lower rocker (18) shows its tilting support towards the side of the bottle's neck (7), arranged in such a way that when approaching and pressing the support arm (5) against said neck (7), the lower rocker (18) is pushed inwards, operating this over the other rocker (13) and provoking the appearance of a lower support (16), which is the first staggered support over the bottle's neck allowing the action of the lever (1) upwards, allowing an easy removal of the cork. A manually operated corkscrew with multiple points of support as claimed in claim 1, characterised in that a mechanism of an auxiliary support point (16) consists of only one rocker (22) which rotates about said axis secured in the inner part of the arm (5), and which has a rounded button (23), which protrudes beyond the outer face of said arm (5), and which furthermore has a flat base (15), which is hidden in the inner part of said arm (5) when is not in use, having an extension spring /17), tilted around the axis (14), of the rocker (22), whereby the rocker's "u"-shaped ends lean against the interior wall of the arm (5) and against the spring of the rocker (22), whereby the rocker (22) is actuated by pressing the rounded button (23) in order to overcome the action of the spring (17) which forces said base (15) out of said fluted support arm (5) and thereby provides said auxiliary point of support (16).

Inventors: BRUCART PUIG RAMON, BRUCART PUIG, RAMON
Applicants: BONICH LINARES MARTA, BRUCART PUIG RAMON, BONICH LINARES, MARTA, BRUCART PUIG, RAMON
Application year: 1998
Main classification: B67B7
IPC codes: B67B7