Patent ID: 6658954
Filing Date: 2003-12-09
Classification: F16H,Y10T

Abstract:
A transmission apparatus comprising:a follower gear; a first drive gear set coupled with the follower gear to drive the follower gear, the first drive gear set including at least one gear; and a second drive gear set coupled with the follower gear to drive the follower gear, the second drive gear set including at least one gear; and a controller coupled with the first drive gear set and the second drive gear set, the controller being configured to synchronize the first drive gear set and the second drive gear set to drive the follower gear in a first direction in a first transmission drive mode, the controller being configured to reverse the direction of the first drive gear set by a phase-shift time period before reversing the direction of the second drive gear set in a transmission reversal mode so as to reduce or eliminate backlash in the first drive gear set prior to engaging the first drive gear set with the follower gear to drive the follower gear in a second direction opposite from the first direction.