Depth measuring device for watches, and watches incorporating such a measuring device
US7778115B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Oct 13, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The depth measuring device for a diving watch with a chronograph mechanism, includes a plunger moved by external pressure through a rolling membrane against the action of a return element. The plunger acts on cams belonging to a circular slide mounted in a casing ring. The movement of the slide is transmitted by a gear train to a depth needle and to a dead needle. A pressure sensing device has a sliding plunger mounted inside the winding button. This plunger acts on a control device for automatically starting and stopping the chronograph mechanism. A locking device is used to lock and release the control device and displays a diving flag in the released position. The gear chain displays a safety flag at a predetermined depth. A resetting device allows the various mechanisms and devices to be reset to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.