# US 7,744,271 B2 · Double sided tourbillon

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- Number: US 7,744,271 B2
- Document ID: US7744271B2
- Status: Granted
- Kind: B2
- Application number: 10/554,904
- Filed: 2004-04-30
- Published: 2007-02-22
- Granted: 2010-06-29
- Earliest claimed: 2003-05-02
- Assignees: Watch-U Licence AG
- Inventors: Rob E. A. Jansen; Louis Lagler
- Web page: https://patentgrep.com/patent/US7744271B2

## CPC

- G04B 17/285: {Tourbillons or carrousels}
- G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)

## Abstract

The invention relates to a tourbillon mechanism comprising at least one platform, a balance arranged on the face of the platform(s), an escapement mechanism being arranged on the other face.

## Claims

### Claim 1

A tourbillon mechanism with a rotary stand carrying a balance and an escapement mechanism actively connected to each other, the tourbillon having a sleeve-like main arbor rigid with a main bearing operable to rotatably mount the rotary stand with respect to a base about a first rotation axis, the balance being arranged on one side of the main bearing and the escapement mechanism arranged on an opposite side of the main bearing.

### Claim 2 (depends on 1)

A tourbillon mechanism according to claim 1, wherein the rotary stand comprises a first platform on the one side of the main bearing and a second platform arranged on the opposite side of the main bearing, the platforms comprising respective openings through which a balance arbor runs, which actively connects the balance and the escapement mechanism to one another.

### Claim 3 (depends on 2)

A tourbillon mechanism according to claim 2, wherein a balance bearing is arranged on a side of each platform, said respective balance bearings operable for mounting the balance arbor about the first rotation axis.

### Claim 4 (depends on 2)

A tourbillon mechanism according to claim 2, wherein a platform comprises an outer tooth system which serves for engagement into a train of a clockwork.

### Claim 5 (depends on 1)

A tourbillon mechanism according to patent claim 1, wherein the main bearing is a ball bearing or a sliding bearing.

### Claim 6 (depends on 1)

A tourbillon mechanism according to claim 1, wherein the tourbillon mechanism is designed as a tourbillon module which is releasable from a clockwork.

### Claim 7 (depends on 1)

A clockwork with a tourbillon mechanism according to claim 1, wherein the balance is arranged on the front side of the clockwork, and the escapement mechanism of the rear side of the clockwork.