US 11,946,511 B2
Ramp-on-ramp overriding clutch arrangement
Burak A. Gecim, Indianapolis, IN (US)
Assigned to Allison Transmission, Inc., Indianapolis, IN (US)
Filed by Allison Transmission, Inc., Indianapolis, IN (US)
Filed on Feb. 7, 2023, as Appl. No. 18/106,673.
Application 18/106,673 is a continuation of application No. 16/887,132, filed on May 29, 2020, granted, now 11,572,923, issued on Feb. 7, 2023.
Claims priority of provisional application 62/861,457, filed on Jun. 14, 2019.
Prior Publication US 2023/0184295 A1, Jun. 15, 2023
Int. Cl. F16D 1/112 (2006.01); F16H 3/091 (2006.01); F16H 59/02 (2006.01)
CPC F16D 1/112 (2013.01) [F16H 3/0915 (2013.01); F16H 59/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transmission comprising:
an input shaft arranged for rotation about an axis, a first input gear, a second input gear, a third input gear, and a fourth input gear coupled to the input shaft for rotation relative to the input shaft about the axis;
an output shaft spaced apart from the input shaft, first, second, third, and fourth output gears coupled to the output shaft and each engaged with a respective one of the first, second, third, or fourth input gears;
a first clutch arrangement comprising a first input-gear selector mounted for rotation with the input shaft and positioned between the first and second input gears; and
a second clutch arrangement comprising a second input-gear selector mounted for rotation with the input shaft and positioned between the third and fourth input gears;
wherein the first input-gear selector is movable on the input shaft relative to the first and second input gears for selectively driving rotation of the first input gear with rotation of the input shaft in a first circumferential direction and a second circumferential direction or rotation of the second input gear with rotation of the input shaft in the first circumferential direction and the second circumferential direction; and
wherein the second input-gear selector is movable on the input shaft relative to the third and fourth input gears for selectively driving rotation of the third input gear with rotation of the input shaft in the first circumferential direction and the second circumferential direction or rotation of the fourth input gear with rotation of the input shaft in the first circumferential direction and the second circumferential direction.