Abstract: Pre-packaged ground coffee portion comprising a container body (10) completely made of paper, paperboard or similar cellulosic materials, provided at the bottom wall (13) thereof with a plurality of holes (15) which are permeable to water while being substantially non-permeable to ground coffee, and provided with a filter material layer (17) as a closing surface which is also derived from cellulose and permeable to water while being substantially non-permeable to ground coffee, said filter material layer (17) being preferably similar to the bottom wall; and a machine suitably designed to use said portion.

Abstract: Taught is an espresso coffee machine comprising a supply unit (101) supplying hot water; and filter-holder means (2, 102) for containing a pre-packaged measure (3) of coffee powder; said supply unit (101) and said filter-holder means (2, 102) being sealingly engaged with each other along a path of the engaging movement, said path of the engaging movement lying in a plane substantially perpendicular to the middle plane of engagement of said supply unit (101) and said filter-holder means (2, 102), the surfaces of said unit (101) supplying said filter-holder means (2, 102) coming into contact only upon engagement of the latter; and an ejection member (401) arranged in the vicinity of the periphery of said supply unit (101) and projecting perpendicularly with respect to the middle plane of engagement of said supply unit (101) and said filter-holder means (2, 102).

Abstract: Espresso coffee machine comprising a reservoir for the water (20), a pump (21) for delivering the said water to a boiler (24), a hot water supply unit (2, 102, 122, 4, 304), and filter holder means (1, 301, 3, 103) for housing a portion of ground coffee (16), preferably pre-packaged, and provided with coffee delivery means (201; 203), characterized in that the said supply unit (2, 102, 122, 4, 304) and the said filter holder means (1, 301; 3, 103) are coupled together with a seal and the trajectory of the coupling movement lies on a plane substantially perpendicular to the median plane of coupling of the said supply unit (2, 102, 122; 4, 304) and the said filter holder means (1, 301; 3, 103), the facing surfaces of the said supply unit (2, 102, 122; 4, 304) and the said filter holder means (1, 301; 3, 103) coming into contact only at the time of their coupling.

Abstract: Prepacked serving of coffee powder, particularly for an espresso coffee making machine, comprising a cartridge (1) enclosing a given portion of coffee powder (40), the said cartridge (1) comprising an essentially cylindrical side wall (101) provided at its two ends with a first wall (201) designed to be acted upon by the pressurized hot-water supply means, and with a second wall (301) designed to be acted upon by the brewed coffee dispensing means, the said cartridge (1) being made of an essentially airtight material, and the said wall (301) being continuous and made of a thermoplastic material.

Abstract: Taught is an espresso coffee machine comprising a supply unit (101) supplying hot water; and filter-holder means (2, 102) for containing a pre-packaged measure (3) of coffee powder; said supply unit (101) and said filter-holder means (2, 102) being sealingly engaged with each other along a path of the engaging movement, said path of the engaging movement lying in a plane substantially perpendicular to the middle plane of engagement of said supply unit (101) and said filter-holder means (2, 102), the surfaces of said unit (101) supplying said filter-holder means (2, 102) coming into contact only upon engagement of the latter; and an ejection member (401) arranged in the vicinity of the periphery of said supply unit (101) and projecting perpendicularly with respect to the middle plane of engagement of said supply unit (101) and said filter-holder means (2, 102).

Abstract: Prepacked serving of coffee powder, particularly for an espresso coffee making machine, comprising a cartridge (1) enclosing a given portion of coffee powder (40), the said cartridge (1) comprising an essentially cylindrical side wall (101) provided at its two ends with a first wall (201) designed to be acted upon by the pressurized hot-water supply means, and with a second wall (301) designed to be acted upon by the brewed coffee dispensing means, the said cartridge (1) being made of an essentially airtight material, and the said wall (301) being continuous and made of a thermoplastic material.

Abstract: Espresso coffee machine comprising a reservoir for the water (20), a pump (21) for delivering the said water to a boiler (24), a hot water supply unit (2, 102, 122, 4, 304), and filter holder means (1, 301, 3, 103) for housing a portion of ground coffee (16), preferably pre-packaged, and provided with coffee delivery means (201; 203), characterized in that the said supply unit (2, 102, 122, 4, 304) and the said filter holder means (1, 301; 3, 103) are coupled together with a seal and the trajectory of the coupling movement lies on a plane substantially perpendicular to the median plane of coupling of the said supply unit (2, 102, 122; 4, 304) and the said filter holder means (1, 301; 3, 103), the facing surfaces of the said supply unit (2, 102, 122; 4, 304) and the said filter holder means (1, 301; 3, 103) coming into contact only at the time of their coupling.

Abstract: A device for application to moka espresso coffee machines, for producing coffee-cream comprises, downstream of a filter (5) overlaying a coffee powder holding basket (2), a membrane (7) made of rubber or other elastomeric material including one or more holes (8) having a very small diameter and/or one or more incisions, thereby causing a pressure increase in water passing through the coffee powder, in addition to an increase of the speed of the coffee infusion passing through the holes of the membrane.

Abstract: An electrical appliance for preparing hot beverages such as infusions and the like, has a first section, electrical heating means in the first section, and means in the first section for supplying electric power to the electrical heating means. A second section has means for containing a fluid to be heated. The first section and the second section are connectable to each other in a releasable manner. The first section is subdivided into a first chamber housing the electrical heating means and into a second chamber for containing the fluid to be heated by a partitioning wall made of heat-conducting material. The heating means is in contact with the partitioning wall.