Closure Unit for a Container, Combination of Such a Closure Unit and a Container and Method for Closing a Container
AssigneeCurtec Nederland B.V.
InventorsIlse Wilhelmina Hendrika van Driel, Sigebertus Johannes Jacobus Jozef Meggelaars, Robertus Franciscus Cornelia Maria Aarts
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Abstract
Closure unit for a container, comprising a substantially flat cover element, for closing off the aperture in the container which cover element is provided with a tension element, for creating a pressure force that presses the cover element to a rim that surrounds the aperture of the container. The invention also prides a closure unit and a container as well as to methods for closing and opening a container with such a closure unit.
Claims15
A closure unit for a container, comprising a substantially flat cover element for closing off the aperture in the container,
- which cover element is provided with a tension element, for creating a pressure force that presses the cover element to a rim that surrounds the aperture of the container in the situation wherein the closure unit is applied onto the container for closing off the aperture;
- which tension element is provided with couplings for cooperation with the container in order to create the pressure force, wherein the tension element in a closed position is enclosing at least the perimeter of the substantially flat cover element and is pressing the substantially flat cover element at at least one contact surface while the couplings of the tension element are in cooperating contact with the container;
- wherein the tension element is composed of at least two mutually displaceable parts, the mutually displaceable parts being moveable between an open position and the closed position, which positions achieve an open configuration resp. closed configuration of the tension element, wherein the closed position of the mutually displaceable parts, in the situation wherein the couplings of the tension element are in cooperating contact with the container, results in at least one contact surface of the tension element being pressed in a direction having at least a component of the movement perpendicular to the flat cover element.
A method for closing a container, comprising the method steps of:
- A) providing an open topped container;
- B) placing a closure unit on the container with a tension element in an open configuration, so that a cover element contacts an aperture surrounding rim the container, whereby couplings of the closure unit are aligned with counter couplings on the container for mutual interlocking;
- C) moving mutually displaceable parts of the tension element of the closure unit from an open position to a closed position whereby an interlocking of the couplings and counter-couplings is accomplished such that a pressure force is exerted by the tension element onto the cover element in the direction towards the container.
Dependencies are inferred from the claim text.