Patent ID: 6021706
Filing Date: 2000-02-08
Classification: A47J

Abstract:
Filter holder adapted to be mounted on a head (T) of a coffee machine of the ""Espresso"" type and comprising a cup (1) provided with a lateral handle (2) and adapted to receive a filter (3) in the shape of a cage (4) with a cylindrical side wall and a perforated bottom (5) and movably mounted in the space delimited by the cage (4) by means of a height adjustment device (6) permitting obtaining various dosages of ground coffee,wherein the height adjustment device (6) comprises, between the perforated bottom (5) and the bottom (7) of the cup (1), a stack of at least one crown (8) mounted adjacent the bottom (5) and a counter-crown (9) coaxial to said crown which comprise respectively on their lateral surfaces (10-11) opposite each other an alternating series of ramps (12) and flats (13B-13H) and counter-ramps (14) and counter-flats (15B-15H), as well as an actuating member (16) movably mounted on the cup (1) and adapted to give rise to a movement of relative rotation between the crown (8) and the counter-crown (9) to cause the perforated bottom (5) to occupy different positions of height in the cage (4); andwherein the crown (8) is secured to the bottom (5) and comprises means (17) for immobilization in rotation relative to the cage (4), whilst the counter-crown (9) is movably mounted in rotation and is secured to the actuating member (16), such that the rotation of the counter-crown (9) gives rise to different coincidences between the flats (13B-13H) and counter-flats (15B-15H).