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

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  1. #1
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    Apart from Perrelet, which brand has the double rotor feature?

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

  2. #2
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    Most likely because it's hokey.
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  3. #3
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    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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  5. #4
    Member kclee's Avatar
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    this one doesn't count...


  6. #5
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    Quote Originally Posted by kclee View Post
    this one doesn't count...

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


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  7. #6
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    Re: Apart from Perrelet, which brand has the double rotor feature?


  8. #7
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    Quote Originally Posted by kclee View Post
    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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  9. #8
    Member WIS_Chronomaster's Avatar
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    I like the look of that!




  10. #9
    Moderator at Large stuffler,mike's Avatar
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    Re: Apart from Perrelet, which brand has the double rotor feature?

    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.
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  11. #10
    Member Robotaz's Avatar
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    Apart from Perrelet, which brand has the double rotor feature?

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


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