US 5,566,605 AGranted

Centrifugal type extraction cell having a deformable sealing joint for a hot beverage preparation machine

AssigneeSeb S.A.

InventorsErik Lebrun, Jean-Paul Astegno, Alain Macera, Alexandre Rouches, Jean-Michael Dulout

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Abstract

An extraction cell of the centrifugal type for a hot beverage preparation machine, including a grounds collection drum on which is mounted, in a sealed manner by a sealing structure, a cover provided with a liquid delivery orifice, and a filtration structure, wherein the filtration structure and the sealing structure are constituted by at least one deformable joint, or seal, interposed in a groove between the drum and cover, the joint having deformation properties, and being mounted to be compressed by an amount which is in a pre-established compression range with the aid of a compression controlling means, to insure that below a pre-established operating pressure existing in the cell, fluid tightness of the cell is maintained, and beyond that pressure, filtration of the grounds-liquid mixture occurs by deformation of the joint.

Claims18

Dependent claims

An extraction cell of the centrifugal type for a hot beverage preparation machine, comprising:

a drum (1) for retaining a mass of a finely divided product from which the beverage is to be prepared;
a cover (2) provided with a liquid delivery orifice (12) for forming a mixture of liquid and the finely divided product, said cover being mounted on said drum;
sealing means interposed between said drum and said cover;
and filtration means for separating, from the finely divided product, liquid which has formed the mixture with the finely divided product, wherein both said filtration means and said sealing means are constituted by at least one deformable seal (25) having deformation properties, and being mounted, to insure that below a pre-established operating pressure existing in said cell, fluid tightness of said cell is maintained, and beyond the preestablished operating pressure, filtration of the finely divided product-liquid mixture occurs by deformation of said seal.

1 more element

Dependencies are inferred from the claim text.