Transmission

An automotive transmission, said transmission comprising:

• i. a housing;
• ii. supported within said housing, a drive shaft comprising an input shaft and an output shaft, said drive shaft driven by a power source;
• iii. slidably mounted on said drive shaft, a front drive dog ring;
• iv. slidably mounted on said drive shaft, a rear drive dog ring;
• v. a gear housing, and contained in said gear housing, two planetary gear housings and carriers, said planetary gear sets comprising a central common sun gear rotatably mounted on said input shaft, two planetary sets and at least three planet gears per set surrounding the sun gear, said planetary gear housings and carriers being covered by circumferential ring gears having internal surface gears that mesh with the planet gears;
• vi. said planetary gears being activated by a front dog ring and a hydraulically driven control cylinder that applies a band on the clutch drum;
• vii. said planetary gear sets movement wherein one planetary gear set runs clockwise and the other planetary gear set runs counter clockwise, simultaneously;
• whenever said clutch is applied and said front dog ring is engaged;
• viii. said front dog ring engages one planetary sun gear to drive said planetary gear sets;
• said front dog ring is driven by said input shaft;
• said front dog ring disengages when direct drive is selected bypassing said planetary gear sets;
• ix. said rear dog ring is surmounted on said output shaft and further drives said output shaft;
• said rear dog ring is activated by said shift lever selecting low gear position, reverse gear position, neutral position and direct drive position;
• when said direct drive position is selected said rear dog ring is disengaged from said planetary gear sets;
• x. a shift rod, said shift rod comprised of an inner shaft having a middle portion and an outer shell, said shift rod having a distal end and a near end,
• xiii. said shift rod outer shell rod being spring biased;
• xiv. said shift rod outer shell having a first shift fork assembly mounted at the distal end of the shifter, the shift fork of said first shift fork assembly being engaged to the forward dog ring;
• xv. said shift rod inner shaft having mounted near the rear dog ring, a second shift fork assembly, the shift fork of said second shift fork assembly being engaged to the rearward dog ring;
• said fork being slidably mounted on said outer shift rod.