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US 4,757,753 AGranted
Espresso coffee machine
AssigneeBrevetti Gaggia S.p.A.
InventorAlberto Pandolfi
Life of this patent
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Abstract
The present specification discloses an improved type of "Espresso" coffee machine where the means (22) for the production and distribution of hot water and steam are independent from the means (5) used for the production of the espresso coffee itself. In this way the construction of the "espresso" coffee machines is very simplified and is possible to easily assemble various type of machines to meet whatever customer's requirements.
Claims5
An espresso machine comprising:
- (a) at least one autonomous group (A) for the production and dispensing of espresso coffee, said group comprising a hot water generator (5) having a closed kettle (6) and heating means (7) associated with said kettle;
- an electrically driven pump (8, 9) to feed cold water under pressure from a cold water source, to said kettle (6);
- a coffee dispensing group (2) including a filter holder (14) apt to contain a dose of ground coffee and a tube (13) connecting said kettle (6) with said coffee dispensing group to feed hot water under pressure to said coffee dispensing group (2) when said electrically driven pump (8, 9) is operated;
- and
- (b) at least one autonomous group (B) dispensing hot water and steam, said group comprising a hot water and steam generator (22) having a closed kettle (23) and heating means (24) associated with said kettle;
- a supply conduit (25) to feed cold water to said kettle from a water distribution network;
- a first delivery conduit (26) connecting, through a shut off valve (27) the zone filled by the water in said kettle (23) with a tube (3) to dispense the hot water and a second delivery conduit (28) connecting, via a second shut-off valve (29) the steam zone in said kettle (23) with a steam dispensing tube (14).
4 more elements
Dependencies are inferred from the claim text.