received by the International Bureau on 01 April 2015 (01.04.2015)

1. Gear mechanism of measuring instrument comprising at least housing part, rotation drive and gearing system, characterized in that system of gearing comprises nested coaxial planetary gearings, at least one of them being double-row, with at least one satellite gear in each of them, and one sun gear or ring gear of each of them is joined to housing part, besides that, at least one movable gear or carrier of at least one of planetary gearings from at least one of its sides serves as indicator or its immediate base.

2. Gear mechanism according to Claim 1, characterized in that at least one planetary gearing comprises a carrier on which at least one satellite gear is axially fixed.

3. Gear mechanism according to any of Claims 1-2, characterized in that at least one sun or ring gear or carrier is axially fixed relative to housing part.

4. Gear mechanism according to any of Claims 1-3, characterized in that in at least one double-row planetary gearing one pair of satellite gears are joined between themselves.

5. Gear mechanism according to any of Claims 1-4, characterized in that in at least one external planetary gearing sun gear is joined to ring gear of nested planetary gearing.

6. Gear mechanism according to any of Claims 1-5, characterized in that in at least one external planetary gearing sun gear is joined to carrier of nested planetary gearing.

7. Gear mechanism according to any of Claims 1-6, characterized in that in at least one external planetary gearing carrier is joined to ring gear of nested planetary gearing.

8. Gear mechanism according to any of Claims 1-7, characterized in that in at least one double-row planetary gearing satellite gears in pairs are axially fixed relative to one another.

9. Gear mechanism according to Claim 8, characterized in that two ring gears or sun gears of at least one planetary gearing are joined between themselves.

10. Gear mechanism according to Claim 8, characterized in that in at least one of planetary gearings two ring gears or two sun gears with crown gears on each of them are engaged by gears that are axially fixed relative to housing part.

11. Gear mechanism according to Claim 8, characterized in that in at least one of planetary gearings two ring gears or two sun gears with crown gears on each

35 of them have at least two separate gearings that switch their engagement in kinematic relations.

12. Gear mechanism according to any of Claims 1-11, characterized in that at least one carrier, ring or sun gear has a crown gear engaging with at least one gear that is axially fixed relative to housing part.

13. Gear mechanism according to any of Claims 1-12, characterized in that at least one gear or carrier is joined to rotation drive.

14. Gear mechanism according to any of Claims 1-13, characterized in that at least one joining is made as a one-piece or as fixed joint assembly of parts.

15. Gear mechanism according to any of Claims 1-13, characterized in that at least one joining is made as friction coupling with at least prescribed torque of cohesion and/or slippage.

16. Gear mechanism according to Claim 15, characterized in that friction coupling is made in the form of frictional wave spring gasket disposed in slots of concentric parts and surfaces in frictional contact being made smooth or corrugated.

17. Gear mechanism according to any of Claims 1-16, characterized in that indication and/or fashion is disposed on at least one movable gear or carrier.

18. Gear mechanism according to any of Claims 1-17, characterized in that at least one dial is made in the form of digits figures or scale marks on the surface of at least one of housing parts.

19. Gear mechanism according to any of Claims 1-18, characterized in that at least one of its planetary gearings are adjacent to at least one of housing parts.

20. Gear mechanism according to any of Claims 1-19, characterized in that teeth of at least one pair of gears are made herringbone or arched.

21. Gear mechanism according to any of Claims 1-20, characterized in that at least one gearing engagement consists of bearing gears in the form of gearwheels with joined to their end faces cylindrical rollers, whose diameters correspond to pitch circle of their gearwheels.

22. Gear mechanism according to Claim 21, characterized in that gearwheels and rollers adjacent end faces are formed by cylindrical helical extrusions of teeth profiles relative to their gearwheels axis, which are symmetrically cut valleys in adjacent rollers up to teeth middle, teeth and rollers adjacent end faces, engaged in pairs, are formed by helical lines of equal radius with pitch being proportional to reduction ratio.

23. Gear mechanism according to Claim 21, characterized in that gearwheels teeth in them are made according to Claim 20, teeth and rollers adjacent end faces made according to Claim 22, or the distance between teeth end faces is smaller than between rollers inner end faces.

24. Gear mechanism according to any of Claims 21-23, characterized in that at least one bearing gear is made as a single piece.

25. Gear mechanism according to any of Claims 21-23, characterized in that at least one bearing gear in it is made as a fixed joint assembly.

26. Gear mechanism according to any of Claims 1-25, characterized in that in the center of planetary gearing a barrel is installed with at least one transparent wall and/or removable lid.

27. Electro-mechanical watch comprising at least a watch case, gear mechanism, control system, drive and power source, characterized in that its gear mechanism is made in accordance with Claims 1-26.

28. Electro-mechanical watch according to Claim 27, characterized in that power source is installed in its barrel.

29. Electro-mechanical watch according to Claim 27, characterized in that generator with inertial sector is installed in its barrel, whereas at least one power source is disposed in watch case and/or in its bracelet.

30. Electro-mechanical watch according to any of Claims 27-29, characterized in that electric circuits are disposed in barrel and on housing parts, whereas control systems and drive are disposed on at least one housing part.

31. Electro-mechanical watch according to any of Claims 27-30, characterized in that at least one stepping motor serves as drive.

32. Electro-mechanical watch according to any of Claims 27-31, characterized in that buttons or sensor elements of watch control system are disposed on at least one housing part.

33. Mechanical watch comprising at least a watch case, gear mechanism, escapement and barrel with mainspring, characterized in that its gear mechanism is made in accordance with Claims 1-26, whereas barrel with mainspring is axially fixed relative watch case.

34. Mechanical watch according to Claim 33, characterized in that its mainspring outer end is joined to sun gear of beveled planetary gearing whose carrier has at least one satellite gear and at least one ratchet mechanism with ratchet-wheel on housing part and/or on barrel, its ring gear being joined to one of sun gears or of carrier of watch nested planetary gearings.

35. Mechanical watch according to Claim 34, characterized in that at least one ratchet mechanism contains a ratchet-lever lock capable to switch couplings between ratchet-wheel and gear of mechanism under prescribed force.

36. Mechanical watch according to any of Claims 33-35, characterized in that on one carrier at least one escapement is disposed and engaged with movable gear or gear joined to housing part coaxially with carrier.

Patent Attorney Olga Bondarenko

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