Traction roller transmission
OwnerCharles Edward Krausinventor
Life of this patent
Estimating the term…
Abstract
A traction roller transmission having traction rollers disposed in firm frictional engagement with a traction surface for the transmission of power between the traction rollers and the traction surface. Guide means which are in alignment with the traction surface and provided adjacent the side faces of the traction rollers such that lubricant present in the transmission is drawn between the roller side faces and the guide means and forms pressurized lubricant pads guiding the rollers into alignment with the traction surface.
Claims9
In a transmission comprising at least two rotatable means having annular traction surfaces disposed in frictional engagement with each other, one of said rotatable means having annular side faces formed at its opposite ends;
- guide means provided with guide surfaces arranged adjacent said one, and in radial alignment with the other of said rotatable means, said guide surfaces being radially spaced from the traction surface of said other rotatable means such that, during operation of the transmission, said side faces are in motion relative to said guide surfaces, said guide surfaces and said side faces being arranged in closely spaced parallel planes thereby providing gaps between said guide surfaces and side faces so as to cause lubricant present in the transmission and adhering to said guide surfaces and annular side faces to be drawn into the gaps between the side faces and the guide surfaces and to form therein pressurized lubricant pads steering said one rotatable means into parallel and radial alignment with said other rotatable means.
In a traction roller transmission having input and output shafts;
- a traction ring carried by one of said shafts for rotation therewith;
- a sun roller carried by the other of said shafts, said sun roller being arranged within said traction ring with its axis parallel to, but displaced from, the axis of said traction ring thereby to form an annular path of varying width between the sun roller and said traction ring;
- and a number of motion transmitting traction rollers disposed in said annular path in annularly spaced relationship, at least one of said rollers being free to be pulled into a narrowing section of said annular path to cause firm engagement of said traction rollers with said sun roller and said traction ring, the improvement comprising guide rails disposed at opposite sides of said annular path and having guide surfaces in radial alignment with said traction ring and receiving therebetween said traction rollers, said traction rollers having annular side faces at their opposite ends, said guide surfaces being radially spaced from the inner surface of said traction ring such that, during operation of the transmission, said annular side faces are in motion relative to said guide surfaces, said side faces and said guide surfaces being arranged in closely spaced parallel planes thereby providing gaps between side guide surfaces and side faces so as to cause lubricant present in the transmission and adhering to said guide surfaces and said annular side faces to be drawn into the gaps between the traction roller side faces and the guide surfaces and to form therein pressurized lubricant pads adapted to steer the traction rollers into parallel and radial alignment with said traction ring.
Dependencies are inferred from the claim text.