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US 8,474,342 B2Granted
Transmission having a low launch gear
AssigneeFord Global Technologies, LLC
InventorsSteven G. Thomas, Steven A. Frait, Jeffrey E. Maurer
Life of this patent
Estimating the term…
Abstract
Gearing for a vehicle transmission includes meshing forward gears and an idler, a reverse gear engaging the idler, a low gear engaging the reverse gear, a final drive, and a low gear drive path including the idler, the forward, reverse and low gears and the final drive.
Claims13
A vehicle transmission, comprising:
- a second speed pinion secured to an input shaft;
- second speed gear meshing with the pinion;
- idler secured to the second speed gear;
- a reverse gear meshing with the idler;
- a low gear producing a speed ratio greater than a speed ratio of a first gear, supported on a layshaft and meshing with the reverse gear;
- a coupler connecting the low gear to the layshaft.
3 more elements
A vehicle transmission, comprising:
- an input shaft;
- an output;
- a pinion secured to the input shaft;
- a gear meshing with the pinion and driving the output at a forward speed;
- an idler secured to the gear;
- a reverse gear meshing with the idler;
- a low gear meshing with the reverse gear and driving the output at a speed ratio greater than a speed ratio of a first forward gear.
4 more elements
A vehicle transmission, comprising:
- an input and output;
- first, second and third layshafts;
- meshing gears of a forward drive path supported on the input and first layshaft,
- an idler secured to one of said gears;
- a reverse gear engaged with the idler and supported on the second layshaft;
- a low gear engaged with the reverse gear and supported on the third layshaft;
- a final drive comprising a pinion secured to the third layshaft and meshing with the output.
4 more elements
Dependencies are inferred from the claim text.