| IQWind Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110252909 | VARIABLE DIAMETER GEAR DEVICE WITH DIAMETER CHANGER FOR CONSTANT PITCH GEAR TOOTH SEQUENCE - A variable diameter gear device for variable ratio transmission systems has a displaceable gear tooth sequence formed from interconnected gear teeth with uniform pitch lying on a virtual cylinder coaxial with an axle of the device. A torque linkage transfers a turning moment between the axle and the gear tooth sequence. A diameter changer includes at least one disc with a spiral track to which each of the gear teeth is linked. Rotation of the discs relative to the axle causes variation of an effective diameter of the virtual cylinder while the gear tooth sequences remain on a virtual cylinder centered on the axis and the uniform pitch remains constant. | 10-20-2011 |
| 20110226077 | APPARATUS INCLUDING A GEAR TOOTH SEQUENCE FOR USE IN A VARIABLE TRANSMISSION - Apparatus for use in a variable ratio transmission has gear teeth ( | 09-22-2011 |
| 20090118043 | VARIABLE DIAMETER GEAR DEVICE AND VARIABLE TRANSMISSIONS USING SUCH DEVICES - A variable diameter gear device for use in a variable ratio transmission system includes a gear tooth set deployed around an axle which defines an axis of rotation. The gear tooth set includes at least two displaceable gear tooth sequences, each including a multiple gear teeth spaced at a uniform pitch, and a diameter changer mechanically linked to the axle and to the gear tooth set. The diameter changer is deployed to transfer a turning moment between the axle and the gear tooth set, and to displace the gear tooth set so as to vary a degree of peripheral coextension between the gear tooth sequences. Specifically, the diameter changer transforms the gear device between at least two states in which the gear tooth set is deployed to provide an effective cylindrical gear with differing effective numbers of teeth. The gear device may be used either in direct engagement with another gear wheel or as part of a chain-based transmission system. | 05-07-2009 |
