US 5,649,472 · Granted 1997-07-22

The Sachet-Piercing Device That Invented Pod Coffee Extraction

Imagine a sealed pouch of ground coffee or tea that you can't open by hand. This patent covers a mechanical clamp with two halves that squeeze the pouch into shape, poke a hole in it, and then blast hot water through to brew your drink—all in one machine. It's the engineering skeleton behind modern pod coffee makers.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a two-part device that holds a flexible sealed sachet (pouch) containing powdered or granulated substance, shapes it by clamping together, pierces it with a raised portion on one member, and forces water through the sachet to extract the contents. What's protected here is the specific mechanical arrangement: the cavity geometry of both halves, the perforation method using raised portions, and the controlled flow of extracted liquid through holes in the clamping member.

Why it matters

This patent is foundational to pod-based beverage extraction—the technology that enabled Nespresso capsules, Keurig K-Cups, and similar single-serve systems to become household staples. Rather than requiring manual opening, grinding, and filtering, the sachet design combined with this extraction device created a sealed, consistent, waste-contained brewing method that transformed commercial and home coffee markets from the mid-1990s onward.

Real-world use

Every time you drop a coffee pod into your single-serve brewer and close the lid, you're using a descendant of this clamping-and-piercing mechanism—the machine squeezes the pouch into the right shape and forces water through it to brew your cup.

Original USPTO abstract

A substance for preparation of a beverage contained in a sealed flexible sachet is extracted with a device which has two members which are configured to each form a cavity which is substantially one-half of a chamber so that upon being tightened together for holding the sachet for extraction of the substance, the sachet is provided with a desired shape and is perforated to enable injection of water for extraction of the substance. Upon perforation, water is injected which deforms a surface against raised portions of one of the members and then tears the sachet to allow flow of beverage from the sachet through holes of the member containing the raised portions.

Patent details

Publication number: US 5,649,472
Filing date: 1993-07-12
Grant date: 1997-07-22
Assignee: Nestec S.A.
Inventor(s): FOND; OLIVIER, LAVANCHY; GERARD, PLEISCH; JEAN-PIERRE, SCHAEFFER; JACQUES, YOAKIM; ALFRED
CPC class: A47J31/3695

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