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My Bike is Better than Yours

Patent

US20170320538A1

Owner

Möve Bikes GmbH

Filing Date

December 09, 2015

Priority Date

December 12, 2014

Portfolio

Transmissions - Möve

Intro

How this bike can go much faster than your bike: watch our video and check out the patent application. The patent owner is looking for commercialization partners!

Claims

1. A transmission for a system, in which a directed force is introduced eccentrically to a main shaft of the transmission, comprising the main shaft, ...
  1. A transmission for a system, in which a directed force is introduced eccentrically to a main shaft of the transmission, comprising the main shaft, which is mounted pivotably with respect to a stationary housing by a main shaft bearing, wherein a sun wheel firmly connected to the housing is arranged concentrically about the main shaft, and at least one control housing rotating about the housing, whose first section engages with the main shaft in a rotationally fixed manner and on whose second section there is rotationally mounted a planet gear by of a first rotary bearing, which meshes with the sun wheel, while on the control housing there is fastened a force transmission means and a crank rigidly engages the planet gear by its first end, while a second end of the crank is pivotally hinged to a crank arm and the crank arm is braced by a movable coupling means relative to the control housing, wherein the movable coupling means is a linear guide, which takes up the tilting moments transmitted by the crank arm.
  2. The transmission according to claim 1, wherein the control housing has a wall segment whose inner side faces the sun wheel and the planet gear and whose outer side faces the crank.
  3. The transmission according to claim 1, wherein the crank arm is mounted on the crank by means of a second rotary bearing and lies against the crank at one end.
  4. The transmission according to claim 2, wherein the linear guide is arranged on the outer side of the wall segment.
  5. The transmission according to claim 1, wherein the force transmission means is at least one toothed ring.
  6. The transmission according to claim 1, wherein the linear guide comprises at least one guide rail with a carriage guided thereon.
  7. The transmission according to claim 6, wherein the at least one guide rail and/or the carriage at least partly overlap the toothed ring in its axial direction or are arranged behind the toothed ring in the direction of the sun wheel.
  8. The transmission according to claim 6, wherein the at least one guide rail is arranged such that the carriage travels twice across a center axis (x) of the main shaft during one revolution of the crank arm.
  9. The transmission according to claim 6, wherein the carriage is movable on the guide rail with one degree of freedom.
  10. The transmission according to claim 6, wherein two guide rails are provided, while the carriage is movable on the two guide rails with one degree of freedom each.
  11. The transmission according to claim 10, wherein the carriage is arranged between the guide rails and is braced against them by two roller pairs each, the roller pairs each having two rollers whose cross section profile is designed complementary to the cross section profile of the respective guide rail.
  12. The transmission according to claim 9, wherein a third rotary bearing engages the carriage and the crank arm.
  13. The transmission according to claim 6, wherein two guide rails and two carriages are provided.
  14. The transmission according to claim 13, wherein each carriage is movable on the respective guide rail with one degree of freedom.
  15. The transmission according to claim 13, wherein each carriage is movable on the respective guide rail with two degrees of freedom.
  16. The transmission according to claim 13, wherein the carriages are joined together by means of a tie bar and a third rotary bearing is arranged between the tie bar and the crank arm.
  17. The transmission according to claim 6, wherein the carriage(s) are designed as a circulating ball element of a linear guide or a sliding bearing element.
  18. The transmission according to claim 1, wherein two control housings engage the main shaft and are arranged with an offset of 180° in the circumferential direction.
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Abstract

A transmission for a system, in which a directed force is introduced eccentrically with respect to a main shaft of the transmission, comprising the ma...
A transmission for a system, in which a directed force is introduced eccentrically with respect to a main shaft of the transmission, comprising the main shaft which is rotatably mounted in relation to a stationary housing by a main shaft bearing, a sun gear which is fixedly connected to the housing being arranged concentrically around the main shaft, and at least one control housing that rotates around the housing, wherein the first section thereof acts on the main shaft in a rotationally fixed manner and a planetary wheel is rotatably mounted by a first rotary bearing on the second section thereof, said planetary gear meshing with the sun gear. According to the invention, a force transmission means is fastened to the control housing and a drive crank rigidly engages the first end on the planetary wheel, wherein a second end of the drive crank is mounted in an articulated manner on a crank arm, said crank arm being supported in relation to the control housing by a movable coupling means. The aim of the invention was to provide a transmission having structural dimensions which are as compact as possible in the axial direction of the main shaft. Said aim is achieved in that the movable coupling means is a linear guide which absorbs tilting torques transmitted by the crank arm.
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Alexander L
December 16, 2018

The promises made by Moeve got lesser every year. Right now, the CEO stated in 2 of their "influencer" Youtube-videos that the complicated crank not only is 2.4 kg heavier than a modern, light standard crank, but will also require 3% more power input due to the large amount of bearings in the crank mechanism. So actually, it will reduce your power output, especially when driving uphill. Along with the heavier, and very expensive special frame required for the Cyfly-crank (roundabout 700 Euros for a custom aluminium frame which is only available in a single size), this has become a fancy way to burn more money and more calories then on a standard bike. The new MTB "Herny" is another example of Moeves little to no knowledge of modern bike technology, looking at the unfortunate mixed parts.
Applications: None
Companies: Investors with money to burn.

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Bastian December 17, 2018

Interesting comment, Alexander L.

Stompedia
December 16, 2018

The idea of an upright elliptoid pedal movement pattern is basically a good one. We love to stomp. Look at traditionnel wine makers of Portugal, they stamp their vines all day... It is a more natural movement than the circle. However, is this "natural movement" really giving humans the possibility to enhance the transmission of their muscular power? This is yet unclear. I think Möve's contribution is worthwhile, as with their special crank it is possible to study this using a scientific approach, for example using real-time spirometry, pulsoxymetry and post-effort lactate analysis. Unfortunately, Möve has as yet not published nor encouraged any such study. Even if such a study would not show any metabolic benefit, their product could still be usefull in a rehabilitation setting: special therapeutic tricycles build for paraplegic patients which push down on the pedal in a dyscoordinated fashion, using external electric stimulation of the quadriceps. Their pedalling would be much more effective if they used epiliptoid pedal cinetics, and not a circular movement (as they lack coordination). Unfortunately, yet again, Möve has not yet build such a specialised tricycle.
Applications: Sports science. Medical application: special tricycle for rehabilitation purposes (paraplegic patients)
Companies: -

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Bastian December 16, 2018

Thanks for the very detailed comment, Stompedia!

Big Daddy
December 16, 2018

Einfach nur geil,das Teil

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Bastian December 16, 2018

Thank you for input, Big Daddy!

TheRealPhysics
December 16, 2018

All started with wrong physical assumptions. Then the "invention" became complex, expensive and heavy without any benefit for cyclists. So I would not recomment to invest anything into that.
Applications: None I could think of
Companies: None

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Dukesim
March 17, 2018

Faster? Not at all. "Radphysiker" made the point. The original patent maker screws up the integration of mechanical work along a curved path, what is documented in patent DE102010033211B4. Because in cycling there is no problem with force or torque, but with power, the invention in the patent is useless for the normal or sporty cyclist. Every real problem there is with force and torque, can be solved with a different gears and crank lengths. The fast proof for the claim above is the degradation of the claims move cycling made itself. On their website they started with "50% more power" (as in the original German patent), after several iterations through "33% more torque" they ended up at many warm words about the supposed benefits. This patent lings up with all the other cycling crank patents which got their first principles wrong. GoodIP: Thank you for your review, Dukesim. Who sees more potential in this invention than Dukesim?

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vogel December 16, 2018

no one.

Radphysiker
March 16, 2018

Das Ding ist eine reine Luftnummer. Die Möven haben anfangs behauptet, in einem normalen Fahrradtretlager würde massiv Leistung in Form von Wärme verloren gehen, und diese Verlustleistung wollten sie nutzbar machen. Das beweist ihre völlige Inkompetenz. Das Problem ist nämlich: Diesen Leistungsverlust gibt es überhaupt nicht, also kann die "Erfindung" auch nichts Positives bewirken. Dementsprechend gibt es für ihre Versprechungen von bis zu 50 % mehr Leistung bei gleicher Anstrengung auch nach Jahren natürlich immer noch nicht den Hauch eines Beweises.

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