Patent ID: 9745120
Date: 2017-08-29
CPC Classifications: A47J,B65D

Claim:
1. A beverage capsule for preparing a beverage in a beverage preparation device from the beverage capsule containing beverage ingredients by passing water through the beverage ingredients contained in the beverage capsule using centrifugal forces, the beverage preparation device comprising a driver for rotating the beverage capsule around an axis of rotation at an operational rotational speed, a capsule holder for receiving the beverage capsule and a water injector for injecting water in the beverage capsule, and a resilient valve for engaging a valve engaging portion of the beverage capsule, the resilient valve comprising a pressing ring, and the beverage capsule comprising: a body; a lid defining a compartment containing the beverage ingredients, the lid comprising a flange and a transversal portion, the transversal portion recessed into the compartment of the beverage capsule and comprising openings along a periphery of the transversal portion, and the openings having a diameter of less than 250 microns; the valve engaging portion designed for being inserted between the capsule holder and the resilient valve of the beverage preparation device; and an outlet structure comprising beverage flow restriction passages of defined cross-section in the beverage capsule, the beverage flow restriction passages comprising a plurality of radially oriented grooves or knurls distributed on a top surface of the valve engaging portion or a labyrinth-type structure provided on a top surface or edge of the valve engaging portion, wherein the valve engaging portion of the beverage capsule has an axial dimension such that, before extraction of the beverage from the beverage capsule, the pressing ring of the resilient valve is stressed by the valve engaging portion to a feature selected from the group consisting of an axial force, an axial distance, and combinations thereof such that, during the extraction by rotating the beverage capsule in the beverage preparation device, the pressing ring no longer moves by a pressure of the centrifuged beverage on the resilient valve within the operational rotational speed and a flow of the beverage is only funneled through the flow restriction passages.