(under subclass 325) Transmissions composed of shiftable gears, and shiftable clutches, or shiftable gears provided with clutch elements, all in one gearing combination, wherein selected gears or clutches are manually shifted into or out of mesh with cooperating gears or clutches.
SEE OR SEARCH CLASS
192, Clutches and Power-Stop Control,
20, for combined clutches and gears, where the gearing controls the clutch.