US 2,010,064,899 · Filed 2008-01-11

The Coffee Capsule Patent That Made Single-Serve Brewing Foolproof

Imagine a tiny sealed cup of ground coffee with a reinforced bottom that's easy to puncture without crushing the whole thing. This patent describes how to engineer that bottom—with a special ring-shaped groove that keeps the capsule sturdy while making it simple for a machine to poke a hole and brew your drink.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a sealed coffee capsule with a specially designed base featuring an annular (ring-shaped) channel. What's protected here is the specific geometry: the inner wall of that channel acts as a stiffening zone that reinforces the capsule, while the base of the channel itself is thin enough to pierce easily. The patent covers both the capsule design itself and the piercing mechanism that works with it—essentially locking down the structural trick that lets machines puncture the bottom without deforming or breaking the capsule.

Why it matters

Single-serve coffee capsules are a huge market, and this patent addresses a real engineering problem: how do you make a base that's strong enough to hold pressure from hot water, but weak enough that a piercing needle can penetrate it cleanly? The stiffening zone solves this by distributing force around the puncture point. This kind of innovation matters because it's the difference between a capsule that works reliably in millions of machines and one that cracks or leaks. It's a small design detail that enables an entire product category to work smoothly.

Real-world use

Every time you pop a Nespresso-style capsule into your home espresso machine, the needle inside is relying on a base design much like this one—engineered to pierce predictably without crushing the capsule or spraying grounds everywhere.

Original USPTO abstract

A capsule, for example for brewing coffee, comprising a rotationally symmetrically formed capsule body having a side wall and having a base formed integrally therewith. The capsule is closed by a lid to form a sealed chamber for accommodating the substance contained in the capsule. The base and lid can be pierced in order that a liquid can be channelled through the capsule. The base is provided with an annular channel, of which the inner wall portion forms a stiffening zone. The base of the channel here forms a piercing zone which, as a result of the stiffening zone, can be pierced to better effect and without the capsule base as a whole being deformed.

Patent details

Publication number: US 2,010,064,899
Filing date: 2008-01-11
Grant date: Application — not yet granted
Assignee: Swiss Caffe Asia Ltd.
Inventor(s): AARDENBURG KEES
CPC class: B65D85/8052

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