Apart from Perrelet, which brand has the double rotor feature?

[gonebynow]

It seems that I can only find Perrelet who has this feature on its watches...
Because they own the patent??

[Watchbreath]

Most likely because it's hokey.

[gonebynow]

Just did a quick research, they did own the patent which filed in 1995 which has passed 20 years... so in practical ...it is legal to have other brand to design a watch with this feature?


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[kclee]

this one doesn't count...

[gonebynow]

this one doesn't count...

this is at the case back so......


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[kclee]

Roger Dubuis



and Hysek


Master Horologer: HYSEK Kilada 41mm Tourbillon with Double Micro-Rotors

[gonebynow]

Roger Dubuis



and Hysek


Master Horologer: HYSEK Kilada 41mm Tourbillon with Double Micro-Rotors

The HYSEK seems to be the close one, but its micro plus it is functional to the watch itself, unlike the Perrelet only for decoration.


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[WIS_Chronomaster]

I like the look of that!

[stuffler,mike]

Only for decoration ? You won‘t patent a decorative Feature, right !? Why would Perrelet couple a ballbearing-mounted oscillating weight with a second inertia weight mounted on the dial ?
1995, the Perrelet watchmakers presented the first Double Rotor P-181 caliber automatically wound by an oscillating weight and stemming from more than five years of research and development. From a technical standpoint the Double Rotor constituted a major watchmaking breakthrough, since the mechanism derived its energy from two rotors. it is not about decoration though.

[Robotaz]

I always thought that the Perrelet was effectively one rotor; two weights connected as one rotor.


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