TRANSMISSION ASSEMBLY FEATURING ONE-WAY NEEDLE BEARINGS FOR ENGINE- AND HUMAN-POWERED VEHICLES

摘要

A transmission assembly for a human- and/or motor-powered vehicle, including a hollow transfer shaft, first and second inner one-way needle bearings, the first inner one-way needle bearing disposed within a first hollow end of the transfer shaft, and the second inner one-way needle bearing disposed within a second hollow end of the transfer shaft; and a first and a second outer one-way needle bearings, each having an inner diameter and an outer diameter, the first outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the first hollow end of the transfer shaft, and the second outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the second end of the transfer shaft, such that the inner diameter of each of the first and second outer one-way needle bearings contacts the outer diameter of the transfer shaft.

主权项

1. A transmission assembly comprising:
a hollow transfer shaft having an inner diameter, an outer diameter, and defining a first hollow end, and a second hollow end; a first and a second inner one-way needle bearings, each having an inner diameter and an outer diameter, the first inner one-way needle bearing disposed within the first hollow end of the transfer shaft, and the second inner one-way needle bearing disposed within the second hollow end of the transfer shaft, such that the outer diameter of each of the first and second inner one-way needle bearings contacts the inner diameter of the transfer shaft; and a first and a second outer one-way needle bearings, each having an inner diameter and an outer diameter, the first outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the first hollow end of the transfer shaft, and the second outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the second end of the transfer shaft, such that the inner diameter of each of the first and second outer one-way needle bearings contacts the outer diameter of the transfer shaft.