Patent ID: 7080567

Claim:
A parallel shaft transmission comprising: an input shaft, a first countershaft and an output shaft, which are disposed in parallel with one another; a second countershaft, which is provided externally, coaxially and rotatably with respect to said first countershaft; an input-shaft first gear, which is provided on said input shaft; an input-shaft second gear, which is provided on said input shaft; an input-shaft third gear, which is provided rotatably on said input shaft; first clutching means, which connects or disconnects said input-shaft third gear to or from said input shaft; a first countershaft gear, which is provided on said first countershaft to mesh with said input-shaft second gear; second clutching means, which connects or disconnects said first countershaft to or from said second countershaft; a second countershaft first gear, which is provided rotatably on said second countershaft to mesh with said input-shaft first gear; third clutching means, which connects or disconnects said second countershaft first gear to or from said second countershaft; a second countershaft second gear, which is provided rotatably on said second countershaft to mesh with said input-shaft third gear; fourth clutching means, which connects or disconnects said second countershaft second gear to or from said second countershaft; and an output-shaft first gear, which is provided on said output shaft to mesh with said input-shaft third gear.