DOMTEKNIKA
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Watchmaking

Eternal watch.

A mainspring winding system powered by ambient temperature variations, developed from an idea initiated by DOMTEKNIKA.

#2015
Rendering of the eternal watch showing the integration of its mechanism

Project overview

In 2015, DOMTEKNIKA developed a system for a major Swiss watchmaker based on an internal idea rather than a client request. The mechanism uses ambient temperature variations to wind the mainspring automatically and prevent it from unwinding completely, an important consideration for mechanical watch accuracy. The project included a functional prototype and performance testing. A provisional patent filing was made, but was not followed by a definitive filing and was never published.

What we handled

  • Feasibility calculations for winding through temperature variations.
  • Component design and dimensioning.
  • Construction of a functional prototype.
  • System performance testing.
Eternal watch — 1
Eternal watch — 2
Eternal watch — 3

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