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US 2016/0242590 A1Published application
Adjustable Portafilter and Grind Adjustment
AssigneeBreville Pty Limited
InventorRobert Grassia
Life of this patent
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Abstract
A portafilter apparatus for an espresso machine, the apparatus comprising: a metal head that is attachable to a group head of the espresso machine, the head defines a coffee grounds compartment for containing a quantity of ground coffee; and a perforated movable floor within the head; the floor forms a filter and defines the base of the coffee grounds compartment, the floor is vertically movable with respect to the head to adjust a volume of the coffee grounds compartment.
Claims19
A portafilter apparatus for an espresso machine, the apparatus comprising:
- a metal head that is attachable to a group head of the espresso machine, the head defines a coffee grounds compartment for containing a quantity of ground coffee;
- a perforated movable floor within the head;
- the floor forms a filter and defines the base of the coffee grounds compartment, the floor is vertically movable with respect to the head;
- and
- the perforated floor is supported by a moving floor body the body includes a vertical thread rack that is driven by a pinion and bevel gear assembly to adjust a volume of the coffee grounds compartment.
2 more elements
The portafilter apparatus according to claim 11, wherein:
- the position sensor measures a rotational position of the selector or main shaft
Dependencies are inferred from the claim text.