Greubel Forsey

Greubel Forsey is a very exclusive, ultra high-end watch brand founded in 2004 by inventor watchmakers Robert Greubel and Stephen Forsey.

http://www.greubelforsey.com/

29/05/2026

Chronographe Constant (9th Invention):

The Chronographe Constant is based on the, Différentiel d’Égalité a mechanism that receives its energy from the mainspring barrel and delivers it evenly to the regulating organ. An additional device is added to compensate for the torque draw – detrimental to chronometry – when the chronograph is engaged.

To achieve this, a recharging differential, controlled by the chronograph’s column wheel, rewinds a secondary spring in order to maintain a constant amplitude of the regulating organ. While this invention is already complete, it will be officially revealed later – and we wanted to offer a glimpse of what lies ahead.

27/05/2026

Tourbillon Cardan (8th Invention):

After many years of development, the Tourbillon Cardan transitioned from concept to operational reality. It is based on three fundamental principles: a fast-rotating tourbillon, a fixed 30° inclined plane, and two perpendicularly tilting rings.

This construction increases angular velocity and exposes the regulating organ to a greater number of positions in less time, improving chronometric performance and extending Greubel Forsey’s research into multi-axis regulation.

25/05/2026

Mechanical Computer (7th Invention):

The Mechanical Computer drives the QP à Équation and QP Balancier, introducing a new interpretation of calendar functions historically found in astronomical clocks. It consists of a set of coding wheels superimposed coaxially and equipped with movable programmed fingers. Depending on rotation speeds and tooth counts, these wheels generate a wide range of information. The MechanicalComputer also directly drives a system of sapphire discs displaying the equation of time. This invention is protected by three patents.

24/05/2026

Double Balancier (6th Invention):

The Double Balancieruses two oscillators positioned along two different axes at precisely defined angles. A spherical differential averages their rates, while angular positioning reduces the effects of gravity. Together, these principles improve precision in stable positions by reducing timing errors.

22/05/2026

Différentiel d’Égalité (5th Invention): The Différentiel d’Égalité is based on a spherical differential that receives energy from the mainspring barrel and releases it in constant quantities to the regulating organ. The mainspring barrel powers a secondary spring, rewound every five seconds. Positioned immediately before the regulating organ, this spring ensures uniform energy transmission by eliminating torque variations from the mainspring barrel and correcting variations generated by the gear train.

’Égalité

21/05/2026

Balancier Spiral Binôme (4th Invention) Using the same material for both the balance and the balance spring improves interaction between the two components. This material, insensitive to temperature variations and non-magnetic, transmits its physical properties consistently to the regulating organ. Initial exploration using synthetic diamond opened the path toward broader research into alternative materials.

18/05/2026

Tourbillon 24 Secondes (3rd Invention): The Tourbillon 24 Secondes uses inclination and rapid rotation to address critical gravitational positions of the oscillator. A 25° angle combined with a fast 24-second rotation significantly improves chronometric performance in stable positions for a single-cage tourbillon. This system required the development of inclined gearing profiles and an ultra-light tourbillon cage capable of withstanding substantial mechanical constraints.

15/05/2026

Quadruple Tourbillon (2nd Invention): Each of the four tourbillons connected to a spherical differential contributes independently to timekeeping stability. The spherical differential transmits the average rate of the four regulating organs, improving chronometric performance and reliability, especially in stable positions.

14/05/2026

Double Tourbillon 30° (1st Invention): Inside a cage rotating in four minutes, a smaller cage containing the balance, spring, and escapement is inclined at an angle of 30° relative to the outer cage and completes a revolution in 60 seconds.

The combination of the 30° inclination with the different rotational speeds of the two tourbillon cages improves timekeeping by averaging positional errors caused by gravity in all usual wristwatch positions. This system delivers particularly strong results in stable positions.

12/05/2026

When no solution exists, invention becomes the only path forward. This philosophy defines the Greubel Forsey approach to fine watchmaking.

Creating innovative mechanisms to improve the performance of their timepieces has always been our chief concern. Through critical spirit, curiosity, and creativity, they have continued to explore new territory and invent original mechanical solutions.
These inventions contribute, with rigor and assurance, to the history of 21st-century watchmaking.

Adresse

Eplatures-Grise 16
La Chaux-de-Fonds
2301

Webseite

http://www.greubelforsey.com/, https://form.greubelforseycrm.com/interest

Benachrichtigungen

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