Patent ID: 7121161

Claim:
A parallel shaft transmission comprising: an input shaft, a first idle shaft, an intermediary shaft, a countershaft and an output shaft, which are disposed in parallel with one another; an input-shaft first gear provided on said input shaft; an input-shaft second gear, which is provided rotatably on said input shaft; first clutching means, which connects or disconnects said input-shaft second gear to or from said input shaft; a first idle gear, which is provided on said first idle shaft to mesh with said input-shaft first gear; an intermediary shaft first gear, which is provided on said intermediary shaft to mesh with said first idle gear; an intermediary shaft second gear, which is provided rotatably on said intermediary shaft; second clutching means, which connects or disconnects said intermediary shaft second gear to or from said intermediary shaft; an output-shaft first gear, which is provided on said output shaft to mesh with said input-shaft second gear and with said intermediary shaft second gear; a countershaft first gear, which is provided on said countershaft to mesh with said input-shaft first gear; a countershaft second gear, which is provided on said countershaft to mesh with said input-shaft second gear; and power-switching means, which enables or disables power transmission between said countershaft and said countershaft second gear.