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US 9,744,739 B2Granted
Tamping augur
AssigneeBreville Pty Limited
InventorsRobert Grassia, Richard Hoare
Life of this patent
Estimating the term…
Abstract
A compacting auger for ground coffee has an automatic cut off that responds to either timing signals or to the torque resistance to the augur offered by the coffee that has been compacted. The automation of the cut off increases the consistency of compaction and reduces the amount of skill required to compact ground coffee for making espresso.
Claims16
A motorised tamping auger device for a portafilter having outwardly extending portafilter tabs, the device comprising:
- a motorised tamping auger;
- an electrical switch;
- a intermediate rotating ring that rotates between an initial first configuration and a second configuration;
- the intermediate rotating ring bring biased toward the first configuration;
- the intermediate rotating ring having a bumper for making contact with a portafilter tab;
- the rotating ring having an activation tab that selectively acts on the electrical switch;
- and
- wherein rotation motion of the portafilter causes the portafilter tab to engage the bumper and rotate the intermediate rotating ring toward the second configuration, such that the activation tab is rotated to act on the electrical switch for controlling the motorised tamping auger.
5 more elements
Dependencies are inferred from the claim text.