Patent ID: 7575534

Claim:
A transmission for a primary engine, the transmission comprising: a rotary control device; and an orbital gear complex comprising only: an orbiter web mounted for rotation about a first axis and responsive to an input drive provided by the primary engine; a control gear mounted for rotation about the first axis and responsive to a control drive provided by the rotary control device; an output gear mounted on the first axis; and at least one cluster gear mounted for rotation on an orbit shaft positioned parallel with the first axis and supported on said orbiter web in mesh with only said control gear and said output gear to permit the orbit shaft and the cluster gear to orbit, respectively, said first axis and said control gear and output gear; wherein a first gear tooth ratio between said cluster gear and said control gear and a second gear tooth ratio between said cluster gear and said output gear are selected such that, when rotation of the control gear is prevented, rotation of said orbiter web produces rotation of said output gear at a predetermined overdrive of the input drive provided by the primary engine; and wherein, when rotation of said output gear is prevented, rotation of said orbiter web produces rotation of the control gear at a predetermined reduction of the input drive provided by the primary engine.