Timepiece escapement mechanism without lubrication
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United States of America Patent
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-
Apr 4, 2017
Grant Date -
Nov 12, 2015
app pub date -
Apr 22, 2015
filing date -
May 8, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A timepiece escapement mechanism with improved tribology includes at least one pair of components including a first component and a second component respectively including a first friction surface and a second friction surface which are arranged to cooperate in contact with each other. The second friction surface includes at least one silicon-based material taken from a group including silicon, silicon dioxide, amorphous silicon, polycrystalline silicon, porous silicon, or a mixture of silicon and silicon oxide. The first friction surface is formed by a surface of a solid element which is made of solid silicon nitride in a stoichiometric formulation Si3N4. A method for making the escapement mechanism is also provided.
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 4, 2028 |
