US 5,207,148 · Granted 1993-05-04

The 1993 Robot Barista: First Patent for Fully Automatic Espresso with Milk

Imagine a coffee machine that grinds beans, brews espresso, steams milk, and mixes them together—all by itself, with zero human intervention. This 1993 patent describes one of the first fully automated espresso machines smart enough to refrigerate milk, clean itself with steam between drinks, and keep everything running through a built-in computer brain.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a fully automated espresso machine that combines grinding, brewing, and milk steaming in one integrated system. What's protected here is the specific combination of automatic grinders, brewing chambers, a steam generator, a venturi mixer that draws in both air and chilled milk, a refrigerated milk source, automatic steam-cleaning cycles for milk contact surfaces, and microprocessor control over all operations including temperature, timing, and hygiene cycles. Someone copying this exact integrated automation architecture would infringe.

Why it matters

This patent arrived at a pivotal moment in espresso history, when most machines still required skilled hands to grind, tamp, brew, and steam milk separately. By automating the entire sequence and adding microprocessor intelligence, it pioneered the category of 'one-touch cappuccino' machines that would eventually become commonplace in offices, hotels, and high-end kitchens. The emphasis on automatic milk hygiene and refrigeration was particularly novel—it solved a real safety and freshness problem that manual machines couldn't address.

Real-world use

Every time you walk up to an automated espresso kiosk in an airport or office lobby and press a single button to get a hot cappuccino, you're encountering the core idea this patent locked down: one machine handling all the steps without human barista skills required.

Original USPTO abstract

An automated espresso coffee machine and method are disclosed which include fully automatic coffee grinding and brewing apparatus (24 to 32) and steam generator means (70) for driving a venturi mixing device (90) which draws ambient air and milk from a refrigerated source (94) for making milk inclusive espresso beverages, all milk contacting surfaces being either refrigerated or steam cleaned with each beverage made and served. Micro-processor means controls all operations including brewing, steam generating, water heating, refrigerating, operations parameters, measuring and monitoring, many "housekeeping" functions and others. <IMAGE>

Patent details

Publication number: US 5,207,148
Filing date: 1990-06-25
Grant date: 1993-05-04
Assignee: Caffe Acorto, Inc.
Inventor(s): ANDERSON; KYLE T., GOSS; DUKE W., LEE; MICHAEL G;.
CPC class: A47J31/36

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