Nissan Motor Company Limited

Kaoru Shori

Kazuyoshi Fujioka

A clutch drum includes a cylindrical drum body having a spline portion consisting of plural extruded angles and extruded channels formed by pressing, and plural pressed-out portions formed at the spline portion, one side wall of the pressed-out portions having a continuous shape without any rupture, the other side wall of the pressed-out portions being formed by half blanking of the clutch drum body so as to stop a snap ring threat.

Clutch drum

A clutch drum includes a cylindrical drum body having a spline portion consisting of plural extruded angles and extruded channels formed by pressing, and plural pressed-out portions formed at the spline portion, one side wall of the pressed-out portions having a continuous shape without any rupture, the other side wall of the pressed-out portions being formed by half blanking of the clutch drum body so as to stop a snap ring thereat.

A gearshift device for a manually operable transmission unit having a transmission case housing gears therein is disclosed as comprising a control rod having a center axis and movable along the center axis thereof with respect to the transmission case, a control lever securely mounted on the control rod and having a free end portion, and a shift fork having a pivot axis fixed with respect to the transmission case and pivotable about the pivot axis, the shift fork having one end portion bifurcated for forming a pair of protrusions and a recess between the protrusions, the free end portion of the control lever being received in the recess, the shift fork having the other end portion operably connected to the gears of the transmission unit, wherein the free end portion of the control lever and one of the protrusions are respectively formed with flat surfaces contactable with each other when the gears of the transmission unit are held in mesh with one another.

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Fuji, Japan

Kaoru Shori