US 12,030,765 B2
Corkscrew with propping lever and method for the extraction of a cork
Daniele Farfalli, Vajont (IT)
Appl. No. 17/772,744
Filed by Daniele Farfalli, Vajont (IT)
PCT Filed Oct. 29, 2020, PCT No. PCT/EP2020/000184
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/083540, PCT Pub. Date May 6, 2021.
Claims priority of application No. 102019000020090 (IT), filed on Oct. 30, 2019.
Prior Publication US 2022/0388827 A1, Dec. 8, 2022
Int. Cl. B67B 7/04 (2006.01)
CPC B67B 7/0429 (2013.01) 18 Claims
OG exemplary drawing
 
1. Corkscrew for extraction of a cork from a neck of a bottle, the corkscrew comprising:
a body provided with a grasping handle and an end head supported by the handle;
a propping lever provided with at least one couple of teeth for propping support on an edge of the neck of the bottle and further in which the lever is hinged by a hinge to the body in correspondence with the head;
an extraction screw for extraction of the cork by insertion by means of screwing within the volume of the cork in which the screw has a spiral longitudinal development;
a first fulcrum for pivotable coupling of the extraction screw to the body in correspondence with the head, the first fulcrum being located in a position of the head which is spaced with respect to the hinge and located between the hinge and the handle;
in which the corkscrew further includes an extension element constituting a fixing interface of the extraction screw with respect to the first fulcrum according to a configuration in which the extension element is coupled to the body in correspondence with the first fulcrum and the extraction screw is pivotably coupled to the extension element by means of a second fulcrum, the assembly of extension element and extraction screw being provided with two fulcra, comprising a first fulcrum and a second fulcrum, in which the corkscrew is configurable between two extraction configurations of the cork having different angulation values of a first angle (A), which is the angle formed between an axis of the extension element joining first fulcrum and second fulcrum and an axis of the screw which is the axis of the spiral longitudinal development of the screw, in which:
a first extraction configuration for a corresponding first extraction sub-phase of the cork is characterised by a value of the first angle (A) between 170° and 190° , preferably equal to about 180°;
a second extraction configuration for a corresponding second extraction sub-phase of the cork is characterised by values of the first angle (A) smaller than the value of the first angle (A) of the first extraction configuration,
characterized in that in the first extraction configuration, during the corresponding first extraction sub-phase of the cork, the first angle (A) has a fixed value for rotation of the assembly of extension element and extraction screw around the first fulcrum, an actuation force on the handle being corresponding to a traction force on the extraction screw according to a direction aligned with the extension element, a first backing surface being present on the body of the corkscrew and a second backing surface being present on the extension element arranged according to a configuration in which a condition of reciprocal contact between the first backing surface and the second backing surface constitutes a blocking condition of the pivotable coupling of the first fulcrum between extraction screw and body for automatic passage from the first extraction configuration to the second extraction configuration for a continuous extraction movement of the cork.