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US 4,534,660 AGranted
Portable device including a visible mechanism
AssigneeETA SA Fabriques d'Ebauches
InventorClaude Laesser
Life of this patent
Estimating the term…
Abstract
The components of a mechanical watch are mounted inside a supporting structure comprising a stack of transparent plates made of corundum, spinel or quartz. Some of the plates are formed with cut-outs which define in the assembled structure housings for accommodating said components.
Claims6
A portable device including a mechanism, said device comprising:
- a source of energy;
- a rotary drive member driven by said source;
- a train of gear wheels and pinions driven by said rotary drive member;
- a transparent front plate;
- a back plate;
- and
- a support structure positioned between said front and back plates, said support structure comprising a plurality of transparent plates which together with said front and back plates form a stack, at least a portion of said plurality of transparent plates comprising cutouts which in cooperation with adjacent plates define enclosures surrounding said source, said rotary drive member and said train of gear wheels and pinions.
4 more elements
Dependencies are inferred from the claim text.