Functional mechanical part

Patent metadata

Field	Value
Publication number	US-12529997-B2
Application number	US-202318366825-A
Country	US
Kind code	B2
Filing date	Aug 8, 2023
Priority date	Dec 19, 2022
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A mechanical part ( 2, 3 ) including a functional surface intended to come into frictional contact with another functional surface, wherein the functional surface of the mechanical part ( 2, 3 ) is made of polyethylene furanoate.

First claim

The invention claimed is:

1 . A horological movement, comprising:
a first mechanical part having a first functional surface; and a second mechanical part having a second functional surface, wherein the first and second mechanical parts are moving parts of the horological movement, wherein the first functional surface of the first mechanical part frictionally contacts the second functional surface of the second mechanical part as the first mechanical part drives the second mechanical part, and wherein the first functional surface is made of polyethylene furanoate.

2 . The horological movement according to claim 1 , wherein the entire first mechanical part is made of polyethylene furanoate.

3 . The horological movement according to claim 1 , wherein the first mechanical part is a pallet, an escape wheel, an arbor of a wheel set, a bearing, a mainspring and toothings of gear wheels.

4 . The horological movement according to claim 1 , wherein the second functional surface of the second mechanical part is made of a material selected from polyethylene furanoate, ruby and steel.

5 . The horological movement according to claim 4 , wherein the frictional contact is lubricated.

6 . The horological movement according to claim 5 , wherein the frictional contact is lubricated using an oil.

Assignees

• Swatch Group Res & Dev Ltd

Inventors

• Vincent Christophe
• CORNILLE Adrien

Classifications

• C08G63/672

  Dicarboxylic acids and dihydroxy compounds · CPC title

• F16H55/00

  Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms (of screw-and-nut gearing F16H25/00) · CPC title

• G04B15/14 Primary

  Component parts or constructional details, e.g. construction of the lever or the escape wheel {(assembly and manufacture of the spring G04B1/145; assembly and manufacture of components, e.g. pinions, spindles G04B13/02; lubrication of clockwork bearings G04B31/008; oils for clockwork bearings in general G04B31/08)} · CPC title

• G04B13/02 Primary

  Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) · CPC title