Patent ID: 6758780
Filing Date: 2004-07-06
Classification: F16H,F16K,Y10T

Abstract:
A planetary traction drive mechanism comprising;a) an electric motor having a housing and a motor drive shaft extending from an end of said housing and defining a sun roller; b) an outer wall attached to said housing and surrounding said sun roller and defining an annular space between said outer wall and said sun roller; c) an output plate rotatably disposed on said drive shaft; d) an output shaft extending from said output plate; and e) at least one planetary roller mechanism disposed on said output plate, said roller mechanism including a pin extending from said output plate into said annular space, said pin being attached to said plate at a proximal end of said pin, and a tubular roller element loosely disposed on said pin, said tubular roller element having an inner diameter greater than the diameter of said pin and having an outer diameter greater than the distance between said sun roller and said outer wall, said tubular roller element being radially compressed between said outer wall and said sun roller.