US 5,398,595 · Granted 1995-03-21

The Coffee Pod Adapter That Powers Nespresso's Empire

Imagine a tiny metal ring that screws onto your coffee machine and holds a capsule in exactly the right spot so water shoots through it perfectly. That's what this patent does — it's the connector piece that makes single-serve espresso machines work. Without it, your coffee pod would just fall out or get punctured wrong.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a ring-shaped adapter that fits around a coffee machine's water injection head. What's protected here is the specific design of the hollow ring, its base (which can be a grill, a perforated plate, or a needle-like spike), and how the projections or needle position a coffee cartridge in the exact spot where hot water needs to pierce it. The patent also covers how the ring connects to a cartridge holder, whether that holder is built-in or removable.

Why it matters

This is the mechanical heart of capsule-based espresso systems like Nespresso. The patent locks down the precise geometry needed to reliably pierce and extract from a sealed cartridge — a seemingly simple task that actually requires exact alignment of water pressure, cartridge position, and penetration depth. Getting this wrong means either weak coffee or water leaking everywhere, which is why owning this design gave the assignee significant control over compatible cartridge systems.

Real-world use

Every time you twist a Nespresso pod into your machine and hear that click, you're engaging with the exact adapter geometry this patent describes.

Original USPTO abstract

Devices for being fitted to a beverage making machine extraction head have a ring member which has a wall which extends to define a hollowed interior portion suitable for being fitted about a periphery of a coffee machine water injection system extraction head which surrounds a water injection passage. The hollowed interior is defined further by a base connected to and disposed transversely with respect to the wall. The base may be a ring wall portion which provides a grill and which has projections extending therefrom, or may be a ring wall portion which has a hole therethrough and which has projections extending therefrom, or may be a ring wall portion which has a centrally disposed needle portion which contains at least one opening so that upon the ring member being fitted about the extraction head, the base is positioned adjacent a base of the extraction head, and so that the projections or needle are positioned to extend away from the extraction head base. The devices also include a cartridge holder, which may be an element integral with the ring member or separate therefrom, and a cartridge holder support.

Patent details

Publication number: US 5,398,595
Filing date: 1992-06-16
Grant date: 1995-03-21
Assignee: Nestec S.A.
Inventor(s): FOND; OLIVIER, YOAKIM; ALFRED
CPC class: A47J31/0668

View original record on Google Patents →

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